Article title,Article author(s),Article year,Variable precise name,Variable generic name,Level 1,Level 2,Level 3,Variable description (quoted from paper when possible),Description quoted from article Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Buying club attendance,Buying club's attendance,Clubs' characteristics,Buying club,Finance and status,Club attendance is measured by the previous season's average attendance figure,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Buying club attendance,Buying club's attendance,Clubs' characteristics,Buying club,Finance and status,Average league attendance of the buying club in previous season,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Buying club attendance,Buying club's attendance,Clubs' characteristics,Buying club,Finance and status,the average home attendances for the buying club during the previous season,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Buying club attendance,Buying club's attendance,Clubs' characteristics,Buying club,Finance and status,buying club's average attendance figure during the previous league season,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Buying club division,Buying club's division,Clubs' characteristics,Buying club,,"Clubs are also dummied according to current division with 'high status', successful clubs assumed to be in the first division and the 'low status', least successful clubs in the fourth, or bottom, division. Clubs in divisions one, two and three were dummied as B,, B2 and B,, with the fourth division taken as the standard.",Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Buying club division,Buying club's division,Clubs' characteristics,Buying club,,"For buying club Dummies for League division 1, 2 and 3. Ref = 4th division",No Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Buying club Division ,Buying club's division,Clubs' characteristics,Buying club,,"three divisional dummy variables (S1, S2 and S3) to represent the divisional status of the buying club (S1 represents Division 1 clubs prior to season 1992/93, Premier League clubs thereafter; S2 represents Division 2 clubs prior to season 1992/93, Division 1 clubs thereafter; and so on)",Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Buying club goal difference,Buying club's goal difference,Clubs' characteristics,Buying club,Sporting performances,"Buying club previous season's goal difference (BU YGD),",Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Buying club goal difference,Buying club's goal difference,Clubs' characteristics,Buying club,Sporting performances,"buying club's goal difference (goals for minus goals against) recorded at end of previous league season",Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Buying club goal difference in past season,Buying club's goal difference,Clubs' characteristics,Buying club,Sporting performances,Goal difference of buying club in previous season: rescaled by 10^-1,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Buying club goal difference past season,Buying club's goal difference,Clubs' characteristics,Buying club,Sporting performances,are the goal differences (goals for minus goals against) recorded for the buying and selling clubs respectively at the end of the previous season,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Buying club ground capacity,Buying club's stadium capacity,Clubs' characteristics,Buying club,Finance and status,Ground capacity of the buying club’s stadium.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Buying club league,Buying club's league,Clubs' characteristics,Buying club,,"Dummy variables for league status of BNPL , BFEED buying club; BV C=Vauxhall Conference, BSL = Southern (Dr Martens) League, BIL = Isthmian (Rymans) League, BNPL = Northern Premier (Unibond) League; feeder leagues (BFEED) as base league.",Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Buying club league attendance previous season,Buying club's attendance,Clubs' characteristics,Buying club,Finance and status,Average league attendance of buying club in previous season interacted with divisional status; rescaled by 10^-4,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Buying club league position,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,are the overall league positions for the buying club respectively (numbered 1 to 92) at the end of the previous season,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Buying club league ranking,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,League position of buying club; rescaled by 10^-1,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Buying club league ranking current ,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,buying club league position at the end of the season in which the transfer took place.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Buying club league ranking past season,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,buying club league position in the season prior to the transfer.,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Buying club league ranking past season,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,League position of buying club in previous season; rescaled by 10^-1,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Buying club league ranking past season squared,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,League position of buying club in previous season; rescaled by 10^-1,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Buying club league ranking squared,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,"divisional position at the beginning of the month in which the transfer is recorded Quadratic form",Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Buying club league ranking squared,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,League position of buying club; rescaled by 10^-1,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Buying club league relative position,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,are the relative divisional placings for the buying and selling clubs at the end of the previous season,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Buying club pretax profit,Buying club's profit,Clubs' characteristics,Buying club,Finance and status,and financial status proxied by a pretax profit variable (BU YPROF).’,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Buying club seated capacity,Buying club's stadium capacity,Clubs' characteristics,Buying club,Finance and status,Number of seats in the buying club’s stadium.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Buying club seated capacity %,Buying club's stadium capacity,Clubs' characteristics,Buying club,Finance and status,Proportion of seats in the buying club’s stadium,Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Club,Current club,Clubs' characteristics,Current club,,,No The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Club = Rushden,Buying club,Clubs' characteristics,Buying club,,Dummy variable = 1 if Rushden and Diamonds is the buying club.,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Club administration,Current club's team value,Clubs' characteristics,Current club,Finance and status,"Sum of the market values of all team soccer players (Herm et al. (2014) in the 2015-2016 season, except the player who is analyzed",Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Club management,Current club's team value,Clubs' characteristics,Current club,Finance and status,Financial success/recruitment effectiveness operationalized by the sum of market values of all teammates (s),Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,Club ranking,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"the position that each club (i) received at the end of the season (t) in the top-division of the Greek championship. This variable is codified as (1) for teams qualified for the UEFA championships (Champions League, Europa League), (2) for teams sustaining their place to the top-division, and (3) for clubs being relegated to the lower division.",Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Club revenues,Buying club's revenues,Clubs' characteristics,Buying club,Finance and status,"The value of league receipts for the 1991–92 season for the buying club in £ thousands. Logged",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Coach,Coach characteristics,Clubs' characteristics,Current club,Sporting performances,"Number of games directed in the last season 2015-2016, in the league (Herm et al., 2014)",Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Coach change,Coach characteristics,Clubs' characteristics,Current club,Sporting performances,"On 1 May 1993, player was registered with a club which had changed manager in the previous 12 months or was to change manager in the subsequent close season (to August 1993) (dummy)",Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Country,Current club's country,Clubs' characteristics,Current club,Finance and status,Dummy for each country,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Division,Current club's division,Clubs' characteristics,Current club,Sporting performances,"DIV 1: Player contracted to a Division 1 club on 1 May 1993 DIV 2: Player contracted to a Division 2 club on 1 May 1993 DIV 3: Player contracted to a Division 3 club on 1 May 1993 Dummies",Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Division buying club,Buying club's division,Clubs' characteristics,Buying club,,"divisional status for the buying club [BDI, BD2, ED3 Division 4 taken as the standard]",Yes A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,Division previous season,Current club's division,Clubs' characteristics,Current club,Sporting performances,"and divisional status if playing at a lower level than the FA Premier League in the previous season (DIV1, DIV2 and DIV3 defined in terms of the three divisions of the Football League or their equivalent).",Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Division selling club,Current club's division,Clubs' characteristics,Current club,Sporting performances,"divisional status for the selling club [SD1, SD2, SD3 with Division 4 taken as the standard] dummies",Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Divone,Buying club's division,Clubs' characteristics,Buying club,,A variable equal to 1 if the buying club was in Division 1; otherwise zero.,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Divtwo,Buying club's division,Clubs' characteristics,Buying club,,A variable equal to 1 if the buying club was in Division 2; otherwise zero.,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Fixed effect country of the buying club,Buying club's country,Clubs' characteristics,Buying club,Finance and status,we include fixed effects for the country of the selling and the buying clubs ,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Fixed effect country of the selling club,Current club's country,Clubs' characteristics,Current club,Finance and status,we include fixed effects for the country of the selling and the buying clubs ,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Goal difference of the buying club in the previous season.,Buying club's goal difference,Clubs' characteristics,Buying club,Sporting performances,Goal difference of the buying club in the previous season.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Goal difference of the selling club in the previous season.,Current club's goal difference,Clubs' characteristics,Current club,Sporting performances,Goal difference of the selling club in the previous season.,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,International players team,Current club's part of foreigners,Clubs' characteristics,Current club,Finance and status,Percentage of foreign players in the team in the 2015-2016 season,Yes The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,Investor cluster,Buying club's majority ownership,Clubs' characteristics,Buying club,Finance and status,"Stake of largest shareholder clustered into: 1) Dispersed ownership: ≤ 50% [Reference category] 2) Majority owner: > 50% and < 100% 3) Single owner: 100%",Yes The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,Investor origin,Buying club's majority ownership,Clubs' characteristics,Buying club,Finance and status,Origin of largest shareholder: 1) Domestic if from the United Kingdom [Reference category] 2) Foreign if not from the United Kingdom,Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,League,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"the fact of belonging to a certain domestic league entails significant variations in terms of media visibility (there is a “premium” associated to being hired by a team that participates in a better league). Dummy variable 1 if Premier League, 0 else",Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,League,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"level variable coded as follows: (1) Premier League, (2) Spanish league, (3) German league, as a control variable.",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,League,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"Dummy for each leagues (premier league, bundesliga, LaLiga, Serie A and Ligue 1), taking LaLiga as control level",Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,League rank,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,League rank of employing team,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,League rank buying club,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,previous end-of-season divisional position variables for the buying club,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,League rank buying club squared,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,previous end-of-season divisional position variables for the buying club squared,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,League rank selling club,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,previous end-of-season divisional position variables for the selling club,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,League rank selling club squared,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,previous end-of-season divisional position variables for the selling club squared,Yes Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,League ranking,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"Team status is the grouping of club status based on the competition’s final standings. We used a dummy variable with a score of 1 if they came from the Big 4 team and 0 for groups below 4th in the last places. The term Big 4 in football refers to clubs that can be in the top four rankings in the season-ending standings, and these clubs usually compete fiercely for the title.",Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,League ranking,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,team position in a league table (the rank of the club on the end of the season),Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Member union association,Current club's league's affiliation to FIFPro,Clubs' characteristics,Current club,Finance and status,"Dummy variable that takes the value of 1 if the league for which the player plays is part of the International Federation of Professional Football Players (FIFPro), and 0 otherwise",Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Promotion,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,The club of registration on 1 May 1993 had won promotion to a higher division at the end of season 1992-93,Yes The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,Rank,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,League rank of the buying club at the end of the previous season (summer transfers) or at the end of the first half of the season (winter transfers) — ranking from 1 to 17 for the teams staying in the league; 21-23 for the three teams being promoted,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Ratio of UEFA points,Ratio of buying and selling clubs UEFA points,Labour,Market,Market activity,ratio between the UEFA points of the incoming and previous club,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Relegation,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"The club of registration on 1 May 1993, had suffered relegation to a lower division at the end of season 1992-93",Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Relegation,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,Club was relegated at the end of the season,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Selected season-specific effects on the division-gate,Buying club's attendance by season,Clubs' characteristics,Buying club,Finance and status,"season-specific effect on the division-gate variable, S1GATE, in season 1994/1995 is included (S1GATE94) Selected season-specific effects on the division-gate variables are included (B3GATE91, B3GATE92, B1GATE95, B2GATE95, B1GATE96, B2GATE96).",Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Selling club attendance,Current club's attendance,Clubs' characteristics,Current club,Finance and status,Club attendance is measured by the previous season's average attendance figure,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Selling club attendance,Current club's attendance,Clubs' characteristics,Current club,Finance and status,Average league attendance of the selling club in previous season,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Selling club attendance,Current club's attendance,Clubs' characteristics,Current club,Finance and status,the average home attendances for the selling club during the previous season,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Selling club attendance,Current club's attendance,Clubs' characteristics,Current club,Finance and status,selling club's average attendance figure during the previous league season,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Selling club division,Current club's division,Clubs' characteristics,Current club,Sporting performances,"Clubs are also dummied according to current division with 'high status', successful clubs assumed to be in the first division and the 'low status', least successful clubs in the fourth, or bottom, division. Clubs in divisions one, two and three were dummied as B,, B2 and B,, with the fourth division taken as the standard.",Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Selling club division,Current club's division,Clubs' characteristics,Current club,Sporting performances,"For selling club Dummies for League division 1, 2 and 3. Ref = 4th division",No Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Selling club Division ,Current club's division,Clubs' characteristics,Current club,Sporting performances,"three divisional dummy variables (S1, S2 and S3) to represent the divisional status of the selling club (S1 represents Division 1 clubs prior to season 1992/93, Premier League clubs thereafter; S2 represents Division 2 clubs prior to season 1992/93, Division 1 clubs thereafter; and so on)",Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Selling club goal difference,Current club's goal difference,Clubs' characteristics,Current club,Sporting performances,"Selling club previous season's goal difference (BU YGD),",Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Selling club goal difference,Current club's goal difference,Clubs' characteristics,Current club,Sporting performances,selling club's goal difference recorded at the end of previous league season,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Selling club goal difference in past season,Current club's goal difference,Clubs' characteristics,Current club,Sporting performances,Goal difference of selling club in previous season; rescaled by 10^-1,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Selling club goal difference past season,Current club's goal difference,Clubs' characteristics,Current club,Sporting performances,are the goal differences (goals for minus goals against) recorded for the buying and selling clubs respectively at the end of the previous season,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Selling club ground capacity,Current club's stadium capacity,Clubs' characteristics,Current club,Finance and status,Ground capacity of the selling club’s stadium.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Selling club league,Current club's league,Clubs' characteristics,Current club,,"Dummy variables for league status of sell- SNPL , SFEED ing club; SVC=Vauxhall Conference, SSL =Southern (Dr Martens) League, SIL =Isthmian (Rymans) League, SNPL =Northern Premier (Unibond) League; feeder leagues (SFEED) as base league.",Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Selling club league attendance previous season,Current club's attendance,Clubs' characteristics,Current club,Finance and status,Average league attendance of selling club in previous season interacted with divisional status; rescaled by 10^-4,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Selling club league position,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,are the overall league positions for the selling club respectively (numbered 1 to 92) at the end of the previous season,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Selling club league ranking,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,League position of selling club; top position in top division = 1; bottom position in lowest division = 92; rescaled by 10^-1,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Selling club league ranking current ,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,Selling club league position at the end of the season in which the transfer took place.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Selling club league ranking past season,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,Selling club league position in the season prior to the transfer.,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Selling club league ranking past season,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,League position of selling club in previous season; rescaled by 10^-1,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Selling club league ranking past season squared,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,League position of selling club in previous season; rescaled by 10^-1,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Selling club league ranking squared,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"divisional position at the beginning of the month in which the transfer is recorded Quadratic form",Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Selling club league ranking squared,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,League position of selling club; top position in top division = 1; bottom position in lowest division = 92; rescaled by 10^-1,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Selling club league relative position,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,are the relative divisional placings for the buying and selling clubs at the end of the previous season,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Selling club pretax profit,Current club's profit,Clubs' characteristics,Current club,Finance and status,and financial status proxied by a pretax profit variable (BU YPROF).’,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Selling club seated capacity,Current club's stadium capacity,Clubs' characteristics,Current club,Finance and status,Number of seats in the selling club’s stadium.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Selling club seated capacity %,Current club's stadium capacity,Clubs' characteristics,Current club,Finance and status,Proportion of seats in the selling club’s stadium,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Sportsman reputation,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"Number of seasons that the athlete has played for a prestigious club in the last 5 years or seasons (since 2011-2012 season to 2015- 2016 season). Variable rated from 0 to 5, for that it is a prestigious club which has been in at least the top four positions in the local league (Montanari et al., 2008)",Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Team,Current club,Clubs' characteristics,Current club,,No detail,No When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Team coach,Coach characteristics,Clubs' characteristics,Current club,Sporting performances,Number of league games played (Bundesliga),Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Team experience,Current club's division,Clubs' characteristics,Current club,Sporting performances,"Number of seasons the team has played in the first division league in the last 5 years (since 2011-2012 season to 2015-2016 season). Variable coded from 0 to 5 (Montanari et al., 2008)",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Team performance,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,"Dummy variable that takes the value of 1 if the athlete has a part of a prestigious soccer club in the season 2015-2016 and 0 otherwise (first division and second division). A club is prestigious if it had ranked at least fourth in the final ranking of its domestic league (Montanari et al. 2008)",Yes Does the quality of a youth academy impact a football player's market value?,"Balliauw, M.; Bosmans, J.; Pauwels, D.",2021,Team value,Current club's team value,Clubs' characteristics,Current club,Finance and status,"As a proxy of a player’s current team strength, the average market value of the team’s other players",Yes Football players’ brand as a factor in performance rights valuation,"Majewski, S.",2021,Team value,Current club's team value,Clubs' characteristics,Current club,Finance and status,Weighted market value of the club (calculated as the relation of the market value of the club divided by FIFA rating points for each player),Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Team value,Current club's team value,Clubs' characteristics,Current club,Finance and status,team value (the total value of all players of the club in million euros),Yes Performance and Actual Pay in Norwegian Soccer,"Thrane, C.",2019,Teams,Current club,Clubs' characteristics,Current club,,Fixed effects,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,UEFA point selling club,Current club's ranking,Clubs' characteristics,Current club,Sporting performances,UEFA points of the seller club. In the MV model this variable represents the football club where the football player is playing.,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,UEFA points buying club,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,UEFA points of the buyer club,Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Weighted team value,Current club's team value,Clubs' characteristics,Current club,Finance and status,Team value divided by FIFA ranking of national team of the player,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,DFBUYGD,Buying club's goal difference,Clubs' characteristics,Buying club,Sporting performances,Dummy variable = 1 if player is defender interacted with BUYGD,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,DFNDR1 ,Goal rate by position,Performance,Metrics,,Dummy variable = 1 if player is defender interacted with GOALRATE,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,DFNDR1 squared,Goal rate by position,Performance,Metrics,,Dummy variable = 1 if player is defender interacted with GOALRATE,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,DFSELLGD,Current club's goal difference,Clubs' characteristics,Current club,Sporting performances,Dummy variable = 1 if player is defender interacted with SELLGD,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,FORBUYGD,Buying club's goal difference,Clubs' characteristics,Buying club,Sporting performances,Dummy variable = 1 if player is forward interacted with BUYGD,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,FORSELLGD,Current club's goal difference,Clubs' characteristics,Current club,Sporting performances,Dummy variable = 1 if player is forward interacted with SELLGD,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,FORSELLGD squared,Current club's goal difference,Clubs' characteristics,Current club,Sporting performances,Dummy variable = 1 if player is forward interacted with SELLGD,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Forward goal rate,Goal rate by position,Performance,Metrics,,"Dummy variable, FOR = 1 if player is a forward. GRFOR represents FOR interacted with GOAL RATE. ",Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Forward goal rate squared,Goal rate by position,Performance,Metrics,,Quadratic term (GRFORSQ) included to allow for a possible nonlinear effect.,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,FRWRD1,Goal rate by position,Performance,Metrics,,Dummy variable = 1 if player is forward interacted with GOALRATE,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,FRWRD1 squared,Goal rate by position,Performance,Metrics,,Dummy variable = 1 if player is forward interacted with GOALRATE,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Interaction between the competitive position of the buying club and the monthly dummy variable for March squared,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,"Competitive position of buying club defined as square of difference of current league position and mid-divisional position, adjusted for 24-club division equivalent interacted with monthly dummy variable for March",Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Interaction between the competitive position of the buying club and the monthly dummy variable for March.,Buying club's ranking,Clubs' characteristics,Buying club,Sporting performances,"Competitive position of buying club defined as square of difference of current league position and mid-divisional position, adjusted for 24-club division equivalent interacted with monthly dummy variable for March",Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Professional experience for young player,Number of matches for young player,Performance,Metrics,,Dummy variable for professional league experience; L EAGPL AY = 1 if the player is under the age of 24 and has made over 20 first-team professional league appearances.,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Additional clauses,Additional clauses in abritration settlement,Labour,Contract,,a dummy variable for the inclusion of additional clauses in settlement awards;,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Agent,Agent characteristics,Labour,Market,Market activity,"dummy variable that represents: (0) the player has a professional agent, (1) the player does not have a professional agent or is represented by a relative",Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Arbitration,Arbitrated fee dummy,Labour,Market,Market activity,FLAC settlements (TRIB),Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Change of team,Transferred during the season,Labour,Market,Market activity,"Dummy variable that takes the value of 1 if the athlete changes from club, during the 2015-2016 season, and 0 otherwise (Montanari et al., 2008)",Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Close season,Transfer window,Labour,Market,Market activity,Dummy variableˆ1 if transfer took place in the close season.,Yes The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,Contract,Contract length,Labour,Contract,,Remaining contract duration with the selling club,Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,Contract duration ,Contract length,Labour,Contract,,Total contract length in years,No Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Cumulative moves,Number of clubs,Player's characteristics,Sporting,,Player cumulative number of job moves over career,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Downward move,Upward or downward move,Labour,Market,Market activity,Dummy: player moves to lower ranked team,Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,Lagged market value,Previous Transfermarkt value,Labour,Market,Monetary valuation,natural logarithm of the lagged market value.,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Max fee,,#N/A,#N/A,#N/A,dummy variable for the outlying maximum arbitrated fee of £1·5m in the data sample,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Mid-season transfer,Transfer window,Labour,Market,Market activity,,No Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Moves,Upward or downward move,Labour,Market,Market activity,Dummy: moves between teams,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Number of downward moves,Upward or downward move,Labour,Market,Market activity,Player cumulative number of downward job moves over career,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Number of undirected moves,Upward or downward move,Labour,Market,Market activity,Player cumulative number of undirected job moves over career,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Number of upward moves,Upward or downward move,Labour,Market,Market activity,Player cumulative number of upward job moves over career,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Previous market value,Previous Transfermarkt value,Labour,Market,Monetary valuation,"To es timate a player’s market value after a given season, we use his estimation of market value from the end of the previous season as a baseline",Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Previous market value,Previous Transfermarkt value,Labour,Market,Monetary valuation,Market value in previous half season (in €),Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Previous transfer fee,Previous transfer fee paid by current club,Labour,Market,Monetary valuation,Transfer fee paid by current employer to hire player during his previous transfer,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Real Transfermarkt estimate,Transfermarkt value,Labour,Market,Monetary valuation,Real Transfermarkt value in thousands of pounds,Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,Remaining contract length,Contract length,Labour,Contract,,remaining time before the current contract of the player would expire. This variable was introduced in the regressions by means of four dummy variables.,Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Sports agent,Agent characteristics,Labour,Market,Market activity,Average market value of all other players in the portfolio of his sport agent (s),Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Sports agent,Agent characteristics,Labour,Market,Market activity,"Dummy variable takes the value of 1 if the soccer player has agent and 0 otherwise",Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Time left on current contract,Contract length,Labour,Contract,,time remaining on their existing contract at the time of their transfer,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Time to maturity,Contract length,Labour,Contract,,"time to maturity, for year i, is the time in years until the expiration date of each contract.",Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,Transfer dummy,Transferred during the season,Labour,Market,Market activity,dummy variable receiving unity (1) if a player has been transferred in a given season and zero (0) otherwise.,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Transfer occurence,Transfer window,Labour,Market,Market activity,Transfer at the end of half season (1=yes),Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,Transfer window,Transfer window,Labour,Market,Market activity,"Dummy variable: 1 if winter window, 0 else",No Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Tribunal decision,Arbitrated fee dummy,Labour,Market,Market activity,The 27 tribunal decisions in our data set are dummied as TRlB,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Tribunal decision,Arbitrated fee dummy,Labour,Market,Market activity,A binary variable adopting a value of 1 if the transfer price was settled by the Football League Appeals Committee; otherwise a value of zero is adopted.,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Upward move,Upward or downward move,Labour,Market,Market activity,Dummy: player moves to higher ranked team,Yes The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,FIFA index,EA FIFA ratings,Performance,Consequences,Status,Player skill level at the beginning of the season of the transfer [index ranging from 0 to 100],Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,FIFA video game rating,EA FIFA ratings,Performance,Consequences,Status,"Summarizing, from the EA Sports crowd-sourced player evaluations, our data includes the overall rating and ratings in 25 attribute categories.",Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Lambda,,#N/A,#N/A,#N/A,Inverse Mills ratio,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Months,Month,Time,,,"Monthly dummy variables are included, with December as the base month",Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Overweight,Weight,Player's characteristics,Individual,,Player's actual weight more than two standard errors above that predicted from subsidiary regression (dummy),Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Season,Season,Time,,,League-season dummy variables ; SEAS9496 ˆ 1 if the transfer took place in seasons 1994/95± 1996/97; SEAS97 ˆ 1 if the transfer took place in season 1997/ 98.,Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Season,Season,Time,,,No detail,No The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,Season,Season,Time,,,Dummy for a respective season from 2012-2013 [Reference category] to 2018-2019,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Season,Season,Time,,,Dummy for each season,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Year,Year,Time,,,Year of transfer.,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Year,Year,Time,,,"six league-season dummy variables for season 1991/1992 onwards are included, with season 1990/1991 as the base season",Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Year,Year,Time,,,is a set of temporary level variables,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Years,Year,Time,,,Y85-Y88 are dummies for year-specic inuences including price effects,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,% golden sub,Goals after being substituted in,Performance,Metrics,,%golden sub = number of appearances as a sub l stitute and scoring a goal/number of substitutions,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,% penalty scored,Penalty,Performance,Metrics,,%penalty scored = number of scored penalties/ l number of scored goals,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,% start in match,Titularisations,Performance,Consequences,Usage,%start in match = number of times starting in a l match/number of matches played,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,% substitute,Subsitutions in,Performance,Consequences,Usage,%substitute = number of appearances as a sub stitute/ number of matches played,Yes A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,A team international level,International status,Performance,Consequences,Usage,international recognition at full international level,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Aerial duels,Aerial duels,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Aerial duels,Aerial duels,Performance,Metrics,,"aerials, when two players challenge in the air against each other. The player that wins the ball is deemed to have won the duel.",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Aerial duels success %,Aerial duels,Performance,Metrics,,,No A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,Appearance rate,Number of matches,Performance,Consequences,Usage,the appearance rate in the previous season,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Appearances,Number of matches,Performance,Consequences,Usage,Number of appearances in the season prior to transfer.,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Appearances,Number of matches,Performance,Consequences,Usage,Appearances in the considered season,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Appearances current season,Number of matches,Performance,Consequences,Usage,The number of league appearances made by the player in the 1991–92 league season. For the transferred players this is the number of appearances at their old club.,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Appearances in previous season,Number of matches,Performance,Consequences,Usage,the number of league appearances in the previous season rescaled by 10^-1,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Appearances last season,Number of matches,Performance,Consequences,Usage,Number of Appearances in the 2000–2001 season,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Appearances last season,Number of matches,Performance,Consequences,Usage,The number of league appearances made by the player in the 1990–91 league season,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Appearances UEFA champions,Number of matches,Performance,Consequences,Usage,"Player appearances in the UEFA champions League (Bryson et al., 2013) in the 2015-2016 season",Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Appearrances,Number of matches,Performance,Consequences,Usage,"number of appearances in matches during a year, a necessary control variable to better understand the other sport variables",Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,Apperance ratio,Number of matches,Performance,Consequences,Usage,percentage of each player i appearances on club’s official games in a given year t estimated as the ratio of the number of player ppearances to the total number of club’s official games in a given season.,Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Assertion,Defensive duels,Performance,Metrics,,Won duels or save to shots ratio of goalkeeper/corrected by mean at position,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Assist,Assists,Performance,Metrics,,Assist made by the player in the season 2015-2016,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Assistances matches,Assists,Performance,Metrics,,Assist as local lucifora 2003 superstar in 2015-2016 season (assist per game?),Yes Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,Assists,Assists,Performance,Metrics,,Assist means a feed that is converted into a goal. Assist is given to the player who gives a pass or touches before the ball is given to the last player to score a goal. This study’s assist size is the number of assists scored by a professional soccer player in the Indonesian League in one season in 2017,Yes Does the quality of a youth academy impact a football player's market value?,"Balliauw, M.; Bosmans, J.; Pauwels, D.",2021,Assists,Assists,Performance,Metrics,,the number of season assists,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Assists,Assists,Performance,Metrics,,Assists,Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Assists,Assists,Performance,Metrics,,assists (the number of first level assists during the season),Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Assists,Assists,Performance,Metrics,,Number of passes that led directly to a goal before the transfer.,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Assists,Assists,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Assists,Assists,Performance,Metrics,,the number of first level assists during the season,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Assists,Assists,Performance,Metrics,,Number of assists given by player,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Assists missing,Assists,Performance,Metrics,,we also created dummy variables indicating those observations for which a zero has re- placed the missing value.,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Assists per thousand minutes played,Assists,Performance,Metrics,,how many matches he had played and the number of goals and assists he recorded per 1000 min of playing time,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Average goals,Goals,Performance,Metrics,,These match statistics are collected by Opta Sports.,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Average minutes played,Minutes played,Performance,Consequences,Usage,These match statistics are collected by Opta Sports.,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Average red cards,Cards,Performance,Metrics,,These match statistics are collected by Opta Sports.,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Average yellow cards,Cards,Performance,Metrics,,These match statistics are collected by Opta Sports.,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Cards,Cards,Performance,Metrics,,"the number of yellow and red cards during the season",Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Career goals,Goals,Performance,Metrics,,the total number of career goals scored by the player prior to the arbitration season,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Career matches,Number of matches,Performance,Consequences,Usage,the total number of career league appearances rescaled by 10^-1,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Career matches,Number of matches,Performance,Consequences,Usage,is the number of career appearances (for all clubs) made by the player prior to the arbitration season,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Career matches squared,Number of matches,Performance,Consequences,Usage,the total number of career league appearances rescaled by 10^-1 squared,Yes Are soccer players older now than before? Aging trends and market value in the last three decades of the UEFA champions league,"Kalén, A.; Rey, E.; de Rellán-Guerra, A.S.; Lago-Peñas, C.",2019,Champions Leagues won,Trophies,Performance,Consequences,Status,number of Champions Leagues won obtained from the UEFA’s website,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Clearances,Clearances,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Clearances,Clearances,Performance,Metrics,,clearances off the line by an opposition player (last line blocks) are counted as shots on target and do not get counted as a blocked shot,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,"Clearances, blocks, interceptions",Blocks + Clearances + Interception,Performance,Metrics,,"Clearances, blocks and interceptions",Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Cross completion,Crosses,Performance,Metrics,,Percentage of crosses that were completed before the transfer.,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Cross-completion rate,Crosses,Performance,Metrics,,% successful crossings,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Cups,Trophies,Performance,Consequences,Status,the number of cups won in the different competitions during a season,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Defence,Blocks + Clearances + Interception,Performance,Metrics,,"Total number of blocks, clearances and interceptions before the transfer.",Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Double yellow cards,Cards,Performance,Metrics,,number of double yellow cards during the season,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Dribble completion,Dribbles,Performance,Metrics,,Percentage of dribbles completed before the transfer.,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Dribbles,Dribbles,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Dribbles,Dribbles,Performance,Metrics,,drivers are attempts by a player to beat an opponent when they have possession of the ball. A successful dribble means the player beats the defender while retaining possession.,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Dribbles success %,Dribbles,Performance,Metrics,,,No "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Efficiency %,Efficiency rate of ball contacts,Performance,Metrics,,Efficiency (rate) of ball contacts (=[flanks+right passes+ shots]/ball contacts),Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,Experience,Seniority,Player's characteristics,Sporting,,Experience,No A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,Experience,Seniority,Player's characteristics,Sporting,,total league experience,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Experience,Seniority,Player's characteristics,Sporting,,"Years since the athlete has been a soccer player for different teams (Barros, 2001)",Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Experience,Seniority,Player's characteristics,Sporting,,Career length of player in years,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Experience in team,Seniority,Player's characteristics,Sporting,,Number of years player is employed by team,Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,Experience squared,Seniority,Player's characteristics,Sporting,,"Experience squared one may expect that increases in productivity reach their maximum – maturity level – as players advance in age and thereafter suffer a decrease",Yes A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,Experience squared,Seniority,Player's characteristics,Sporting,,total league experience squared,Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Experts in media,Journal ratings,Performance,Consequences,Status,Average grades (1–6) from experts of three different sports portals,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Fouls,Fouls,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Fouls conceded,Fouls,Performance,Metrics,,"a foul conceded is defined as any infringement that is penalized as foul play by a referee. Some types of foul: kicking, tripping, charging, striking, pushing, pulling and spitting.",Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Fouls won,Fouls,Performance,Metrics,,a foul won is defined as where a player wins a free kick or penalty for their team after being fouled by an opposing player.,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Full international caps,International status,Performance,Consequences,Usage,the number of full international appearances rescaled by 10^-1,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Full international caps squared,International status,Performance,Consequences,Usage,the number of full international appearances rescaled by 10^-1 squared,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Goal per league match in career,Goals per match,Performance,Metrics,,the career average of goals scored per league match played,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Goal rate,Goals per match,Performance,Metrics,,GOAL S/APPS.,Yes Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,Goals,Goals,Performance,Metrics,,Goal is the number of balls a player has successfully put into the opponent’s goal. This study’s goal size is the number of goals scored by a professional soccer player in the Indonesian League in one competition season in 2017,Yes Does the quality of a youth academy impact a football player's market value?,"Balliauw, M.; Bosmans, J.; Pauwels, D.",2021,Goals,Goals,Performance,Metrics,,the number of season goals,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Goals,Goals,Performance,Metrics,,number of goals scored by the player in the previous season,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Goals,Goals,Performance,Metrics,,Number of goals scored in the season prior to transfer.,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Goals,Goals,Performance,Metrics,,Goals,Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Goals,Goals,Performance,Metrics,,goals scored (the number of goals scored during the season),Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Goals,Goals,Performance,Metrics,,The number of goals scored before the transfer.,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Goals,Goals,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Goals,Goals,Performance,Metrics,,the number of goals scored in a period,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Goals,Goals,Performance,Metrics,,Goals scored during career,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Goals,Goals,Performance,Metrics,,Number of goals scored by player,Yes Football players’ brand as a factor in performance rights valuation,"Majewski, S.",2021,Goals + assists,Assists + Goals,Performance,Metrics,,Canadian classification points (the sum of goals scored and assists),Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Goals + assists,Assists + Goals,Performance,Metrics,,"Canadian classification points (the sum of goals scored and assists); ",Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Goals + Assists,Assists + Goals,Performance,Metrics,,Scoring Performance (goals+assists) per minute,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Goals conceded by DEF,Goals,Performance,Metrics,,League goals conceded by defenders during 1992-93,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Goals conceded by GK,Goals,Performance,Metrics,,League goals conceded by goalkeepers during 1992-93,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Goals current season,Goals,Performance,Metrics,,The number of league goals scored in the 1991-92 league season.,Yes A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,Goals in career,Goals,Performance,Metrics,,goal-scoring records over the player's career,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Goals in cup,Goals,Performance,Metrics,,Goals scored in the Coca Cola Cup during 1992-93,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Goals in FA cup,Goals,Performance,Metrics,,Goals scored in the FA Cup during 1992-93,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Goals in previous season,Goals,Performance,Metrics,,the number of goals scored by the player in the previous season rescaled by 10^-1,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Goals last season,Goals,Performance,Metrics,,The number of league goals scored in the 1990-91 league season.,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Goals last seasons,Goals,Performance,Metrics,,Number of goals scored in the 2000–2001 season.,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Goals missing,Goals,Performance,Metrics,,we also created dummy variables indicating those observations for which a zero has re- placed the missing value.,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Goals per thousand minutes played,Goals,Performance,Metrics,,how many matches he had played and the number of goals and assists he recorded per 1000 min of playing time,Yes A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,Goals previous season,Goals,Performance,Metrics,,goal-scoring records in the previous season,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Goals previous season,Goals,Performance,Metrics,,"Goals scored during 2015-2016 season (Gerrard, 2001)",Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Goals previous season,Goals,Performance,Metrics,,number of goals scored by the player for the selling club during the previous league season,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Goals ratio,Goals,Performance,Metrics,,Goals-for=goals-against ratio weighted by divisional average,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Goals to shots,Goals per shot,Performance,Metrics,,Goals divided by total shots before the transfer.,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Highest number of matches played in same team,Number of matches,Performance,Consequences,Usage,Player matches played / highest number of matches played by player in same team,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Intensive runs,Effort,Performance,Metrics,,"Average number of intensive runs (i.e., >20km/h) per game (per minute)",Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Intensive runs squared,Effort,Performance,Metrics,,"Average number of intensive runs (i.e., >20km/h) per game (per minute) squared",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Interceptions,Interception,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Interceptions,Interception,Performance,Metrics,,when a player reads an opponent’s pass and intercepts the ball by moving into the line of the intended pass.,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,International,International status,Performance,Consequences,Usage,Binary variable equal to unity if the player has had full representative honours; otherwise zero.,Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,International caps,International status,Performance,Consequences,Usage,Number of games in which a player has defended his own national team,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,International caps,International status,Performance,Consequences,Usage,the total number of full international caps awarded to the player prior to the arbitration season,Yes Performance and Actual Pay in Norwegian Soccer,"Thrane, C.",2019,International caps,Number of matches,Performance,Consequences,Usage,"Career national team matches factor: 0 match 1–3 matches 4–10 matches 11 or more matches",Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,International caps squared,International status,Performance,Consequences,Usage,Squared number of games in which a player has defended his own national team,Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,International dummy,International status,Performance,Consequences,Usage,annual percentage of each player’s appearances on his national team estimated as the ratio of the number of player appearances to the total number of national team’s official games in a given season.,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,International recognition,Trophies,Performance,Consequences,Status,"Champion in the last tournament of the Confederations FIFA Cup, Euro UEFA of teams, club world cup, UEFA Champions League, UEFA European League, and UEFA Super Cup",Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,International status,International status,Performance,Consequences,Usage,A binary variable adopting a value of 1 if the player has had full international representative honours; otherwise a value of zero is adopted.,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,International status,International status,Performance,Consequences,Usage,National player in the player´s home country (1=yes),Yes Performance and Actual Pay in Norwegian Soccer,"Thrane, C.",2019,Journal ratings,Journal ratings,Performance,Consequences,Status,The variable “Season performance: Mean score” is the soccer expert/journalist rating of players from http://www.altomfotball.no/.,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,League appearances previous season,Number of matches,Performance,Consequences,Usage,number of league appearances during the season prior to the transfer,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,League goal delta between 2 seasons,Goals,Performance,Metrics,,"League goals scored in 1992-93 minus goals scored in 1991-92, Prefixes F, M, D indicate that GOALS is interacted with the player positions forward, midfield and defender, respectively",Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,League goals previous season,Goals,Performance,Metrics,,"League goals scored by the player in season 1991- 92. Prefixes F, M, D indicate that GOALS 91 is interacted with the player positions forward, mid- field and defender, respectively",Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Liga fantastica index,Journal ratings,Performance,Consequences,Status,"another index of productivity evaluated through 'liga Fantastica' , logged",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Matches,Number of matches,Performance,Consequences,Usage,Matches played during the career in the league,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Matches played,Number of matches,Performance,Consequences,Usage,how many matches he had played and the number of goals and assists he recorded per 1000 min of playing time,Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Matches played,Number of matches,Performance,Consequences,Usage,performance (the number of matches played by the footballer during the season),Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Minutes,Minutes played,Performance,Consequences,Usage,The total number of minutes a player was on the pitch before the transfer.,Yes Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,Minutes played,Minutes played,Performance,Consequences,Usage,"Minutes of play is the number of minutes played by a soccer player on the field, either playing as a core player or a substitute player. The size of playing minutes in this study is the number of minutes played for the cubs defended by each professional soccer player in the Indonesian League in one season in 2017.",Yes Does the quality of a youth academy impact a football player's market value?,"Balliauw, M.; Bosmans, J.; Pauwels, D.",2021,Minutes played,Minutes played,Performance,Consequences,Usage,the number of total professional playing minutes,Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Minutes played,Minutes played,Performance,Consequences,Usage,total time on the pitch during whole season (in minutes),Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Minutes played,Minutes played,Performance,Consequences,Usage,,No The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,National team,International status,Performance,Consequences,Usage,Player had played for a country other than England at least once (dummy),Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,National team,International status,Performance,Consequences,Usage,"Dummy variable that takes the value of 1 if it has participated and 0 otherwise",Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,National team,International status,Performance,Consequences,Usage,Dummy: player active in international matches for country,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,National team (england),International status,Performance,Consequences,Usage,Player had played for England at least once (dummy),Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,National team player,International status,Performance,Consequences,Usage,whether the player had been a member of his country’s national team prior to the transfer,Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Number of games in European club competitions,Number of matches,Performance,Consequences,Usage,Number of games that have taken place in the Champions League or in the UEFA Cup,Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Number of games in European club competitions squared,Number of matches,Performance,Consequences,Usage,Squared number of games that have taken place in the Champions League or in the UEFA Cup,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Number of match played,Number of matches,Performance,Consequences,Usage,These match statistics are collected by Opta Sports.,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Number of matches,Number of matches,Performance,Consequences,Usage,number of appearances by player for the selling club during the previous league season including substitute,Yes Performance and Actual Pay in Norwegian Soccer,"Thrane, C.",2019,Number of matches,Number of matches,Performance,Consequences,Usage,The variable “Season playtime: Full 90 minutes” is the total number of minutes on the pitch during the season divided by 90,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Number of matches,Number of matches,Performance,Consequences,Usage,Number of appearances in half season,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Number of matches for current club,Number of matches,Performance,Consequences,Usage,Number of League appearances for current club (as of 1 May 1993) up to 1 May 1993,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Number of matches for other clubs,Number of matches,Performance,Consequences,Usage,Number of League appearances for other clubs up to 1 May 1993,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Own goals,Own goals,Performance,Metrics,,the number of own goals scored,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Pass,Passes,Performance,Metrics,,Percentage of passes that went to a teammate before the transfer.,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Passes,Passes,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Passes,Passes,Performance,Metrics,,"including any intentional played ball from one player to another. Passes include open play passes, goal kicks, corners and free kicks played as a pass, but exclude crosses, keeper throws and throw-ins.",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Passes success %,Passes,Performance,Metrics,,,No Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Penalties conceded,Fouls,Performance,Metrics,,Number of fouls conceded in penalty area,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Performance,Number of matches,Performance,Consequences,Usage,Player appearances last season 2015-2016,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Player all-star game,Awards,Performance,Consequences,Status,"Proxy. Dummy variable that takes the value of 1 if the player was chosen for the FIFA FIFPro World11 2016 award",Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Precision,Passes,Performance,Metrics,,% Successful passes/corrected by mean at position,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Previous appearances,Number of matches,Performance,Consequences,Usage,Accumulated appearances before the considered season,Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Puntos Marca,Journal ratings,Performance,Consequences,Status,"an index of performance measured by 'puntos Marca' , logged",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Recognition under-21,Youth international status,Performance,Consequences,Usage,"Dummy variable that takes the value of 1 if it has participated in the national under-21 team and 0 otherwise",Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Red,Cards,Performance,Metrics,,Number of red cards picked up by player,Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Red card,Cards,Performance,Metrics,,number of red cards during the season,Yes Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,Red cards,Cards,Performance,Metrics,,"Red Cards. The referee’s red card is given directly to the player who commits a violent foul or the player who gets a yellow card twice. In this study, red cards were calculated from the number of red cards a professional soccer player received in the Indonesian League in one season in 2017",Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Red cards,Cards,Performance,Metrics,,Number of red cards,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Red cards,Cards,Performance,Metrics,,,No "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Running distance,Effort,Performance,Metrics,,Average running distance per game (km per minute),Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Running distance squared,Effort,Performance,Metrics,,Average running distance per game (km per minute) squared,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Saves to shots ratio,Saves,Performance,Metrics,,Save to shots ratio of the goalkeeper,Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Scoring,Assists + Goals,Performance,Metrics,,Number of goals and assists/corrected by mean at position,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Season goals,Goals,Performance,Metrics,,the total number of goals scored by the player for the selling club during the previous season,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Season matches,Number of matches,Performance,Consequences,Usage,the total appearances made by the player for the selling club during the previous season including substitute,Yes Are soccer players older now than before? Aging trends and market value in the last three decades of the UEFA champions league,"Kalén, A.; Rey, E.; de Rellán-Guerra, A.S.; Lago-Peñas, C.",2019,Seasons in the club,Seniority,Player's characteristics,Sporting,,number of seasons in the club obtained from the UEFA’s website,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Seniority,Seniority,Player's characteristics,Sporting,,Time played for the club (in years),Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Shooting accuracy,Shots,Performance,Metrics,,Shots on target divided by total shots before the transfer.,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Shots off target,Shots,Performance,Metrics,,Number of shots off target,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Shots on target,Shots,Performance,Metrics,,Number of shots on target,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Squared experience,Seniority,Player's characteristics,Sporting,,Squared career length of player in years,Yes Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,Starting 11,Titularisations,Performance,Consequences,Usage,"Team status is the grouping of club status based on the competition’s final standings. We used a dummy variable with a score of 1 if they came from the Big 4 team and 0 for groups below 4th in the last places. The term Big 4 in football refers to clubs that can be in the top four rankings in the season-ending standings, and these clubs usually compete fiercely for the title.",Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,Status,Minutes played,Performance,Consequences,Usage,"categorizing players into two subgroups named as “first team” and “back-ups.” The distribution of each athlete to a category was made based on the formula that if a player’s annual minutes ≥ annual mean value of minutes of all club’s players + standard deviation, was ategorized as “first team.” On the contrary, if a player’s annual minutes ≤ annual mean value of all club’s players + standard deviation, it was categorized as “back-up.”",Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Subistitution in,Subsitutions in,Performance,Consequences,Usage,substitutes in (the number of matches the player comes on the football pitch from the substitutes bench),Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Substitute,Subsitutions in,Performance,Consequences,Usage,"Appearances as a substitute (Bryson et al., 2013) in the 2015-2016 season",Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Substitution out,Subsitutions out,Performance,Consequences,Usage,substitutes out (the number of matches the player exits the football pitch during the match),Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Substitutions in,Subsitutions in,Performance,Consequences,Usage,"the number of matches when the player comes on the football pitch, because of a substitution",Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Substitutions out,Subsitutions out,Performance,Consequences,Usage,"the number of times the player is substituted during a match throughout a season",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Tackles,Tackles,Performance,Metrics,,,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Tackles,Tackles,Performance,Metrics,,"tackles, when a player connects with the ball in a ground challenge where he successfully takes the ball away from the player in possession.",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Tackles success %,Tackles,Performance,Metrics,,,No English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Tackles won,Tackles,Performance,Metrics,,Percentage of tackles won before the transfer.,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Tackling %,Tackles,Performance,Metrics,,Tackling rate (=tackles won/all tackles),Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Titularization,Titularisations,Performance,Consequences,Usage,number of positions in the first line-up,Yes Performance and Actual Pay in Norwegian Soccer,"Thrane, C.",2019,Total number of match,Number of matches,Performance,Consequences,Usage,Number of match for the club in career (or for clubs in general?),No The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,U21,Youth international status,Performance,Consequences,Usage,Player had not played in a senior international but appeared in at least one under 21 international game (dummy),Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,U21 international caps,Youth international status,Performance,Consequences,Usage,the number of Under-21 international rescaled by 10^-1 appearances,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,U21 international caps squared,Youth international status,Performance,Consequences,Usage,the number of Under-21 international rescaled by 10^-1 appearances squared,Yes A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,U21 international level,Youth international status,Performance,Consequences,Usage,international recognition at Under-21 international level,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Under-21 but not senior,Youth international status,Performance,Consequences,Usage,"Dummy variable takes the value of 1 if the player has been selected for national under-21 team but not for national senior team (Lucifora & Simmons, 2003) in the 2015-2016 season",Yes Does the quality of a youth academy impact a football player's market value?,"Balliauw, M.; Bosmans, J.; Pauwels, D.",2021,Weighted international caps,International status,Performance,Consequences,Usage,total number of national team appearances multiplied by FIFA ranking points to include weighing that accounts for the greater difficulty to play in world’s best national teams,Yes Upward and downward job mobility and player market values in contemporary European professional football,"Velema, T.A.",2019,Yellow,Cards,Performance,Metrics,,Number of yellow cards picked up by player,Yes Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,Yellow cards,Cards,Performance,Metrics,,"The yellow card issued by the referee is given to a player who commits repeated minor fouls or violent fouls but is still a little tolerable. In this study, yellow cards are calculated from the number of yellow cards a professional soccer player got in the Indonesian League in one season in 2017.",Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Yellow cards,Cards,Performance,Metrics,,Number of yellow cards,Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Yellow cards,Cards,Performance,Metrics,,number of yellow cards during the season,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Yellow cards,Cards,Performance,Metrics,,,No Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,Age,Age,Player's characteristics,Individual,,"In some professional football leagues, there is a rule that every player can enter a professional contract with a club if the player is at least 17 years of age or older (Rowbottom, 1998). In this study, age refers to every professional soccer player’s age in the Indonesian League from birth to 2017",Yes Does the quality of a youth academy impact a football player's market value?,"Balliauw, M.; Bosmans, J.; Pauwels, D.",2021,Age,Age,Player's characteristics,Individual,,Player age,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Age,Age,Player's characteristics,Individual,,Age in years on 1 September 1993,Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,Age,Age,Player's characteristics,Individual,,age of each athlete in a given season.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Age,Age,Player's characteristics,Individual,,AGE Age of player.,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Age,Age,Player's characteristics,Individual,,Player’s age,Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Age,Age,Player's characteristics,Individual,,Age of the player,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Age,Age,Player's characteristics,Individual,,Age of player; rescaled by 10^-1,Yes A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,Age,Age,Player's characteristics,Individual,,player's age,Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Age,Age,Player's characteristics,Individual,,"Age (years)/absolute deviation from age with maximum value (24,16)",Yes Are soccer players older now than before? Aging trends and market value in the last three decades of the UEFA champions league,"Kalén, A.; Rey, E.; de Rellán-Guerra, A.S.; Lago-Peñas, C.",2019,Age,Age,Player's characteristics,Individual,,"Players’ age was calculated as the date of competition minus the date of birth according to the information provided by the official UEFA website (see footnote 1). In line with previous studies and for posterior analyses (Botek et al., 2016), soccer players were divided into five age groups: 16–20, 20–25, 26–30, 30–35 and >35 years.",Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Age,Age,Player's characteristics,Individual,,age (of the player in years),Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Age,Age,Player's characteristics,Individual,,Age on 19 August 2001 (first day of the 2001–2002 season).,Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Age,Age,Player's characteristics,Individual,,No detail,No The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,Age,Age,Player's characteristics,Individual,,Player age at the time of the transfer (squared influence is considered),Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Age,Age,Player's characteristics,Individual,,age of each football player,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Age,Age,Player's characteristics,Individual,,"Personal information of the players is collected from http://www.transfermarkt.de/. The information on the website contains information about the origin, age, height, preferred foot and position of a player. Most explanatory variables used are self explanatory",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Age,Age,Player's characteristics,Individual,,Age of athlete in years,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Age,Age,Player's characteristics,Individual,,player age in years at the beginning of the arbitration season,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Age,Age,Player's characteristics,Individual,,player age in years at the beginning of the transfer season,Yes Performance and Actual Pay in Norwegian Soccer,"Thrane, C.",2019,Age,Age,Player's characteristics,Individual,,Age,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Age,Age,Player's characteristics,Individual,,Age in years,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Age <20,Age,Player's characteristics,Individual,,A binary variable adopting a value of 1 if the player is aged less than 20 years; otherwise a value of zero is adopted.,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Age >25 but ≤ 30,Age,Player's characteristics,Individual,,"A binary variable adopting a value of 1 if the player is aged between 26 and 30; otherwise a value of zero is adopted.",Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Age ≥ 20 but ≤ 25,Age,Player's characteristics,Individual,,A binary variable adopting a value of 1 if the player is aged between 20 and 25; otherwise a value of zero is adopted.,Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,Age at the end of new contract,Age,Player's characteristics,Individual,,Age of the player in years at the theoretical end of its new contract,No Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Age cubed,Age,Player's characteristics,Individual,,No detail,No Does the quality of a youth academy impact a football player's market value?,"Balliauw, M.; Bosmans, J.; Pauwels, D.",2021,Age squared,Age,Player's characteristics,Individual,,Player age squared,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Age squared,Age,Player's characteristics,Individual,,Square of age on 1 September 1993,Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Age squared,Age,Player's characteristics,Individual,,"The relationship between player age and his valuation is based on experience and potential. While experience increases with age, ability and potential are expected to decline after a point. As such, the overall relationship may be assumed to be non-linear, suggesting a quadratic form for the age variable (AGESQ).",Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,Age squared,Age,Player's characteristics,Individual,,age of each athlete in a given season.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Age squared,Age,Player's characteristics,Individual,,AGESQ Age of player squared,Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Age squared,Age,Player's characteristics,Individual,,Squared term of age,Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Age squared,Age,Player's characteristics,Individual,,Age of the player squared,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Age squared,Age,Player's characteristics,Individual,,the age of the player at the time of the transfer squared,Yes A new approach to measuring player and team quality in professional team sports,"Gerrard, Bill",2001,Age squared,Age,Player's characteristics,Individual,,player's age squared,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Age squared,Age,Player's characteristics,Individual,,In years,Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Age squared,Age,Player's characteristics,Individual,,No detail,No The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,Age squared,Age,Player's characteristics,Individual,,Player age at the time of the transfer (squared influence is considered),Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Age squared,Age,Player's characteristics,Individual,,"allowing nonlinear relationships because this variable collects experience and capacity, considering that player values usually ncrease until an age and decline after that",Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Age squared,Age,Player's characteristics,Individual,,"Personal information of the players is collected from http://www.transfermarkt.de/. The information on the website contains information about the origin, age, height, preferred foot and position of a player. Most explanatory variables used are self explanatory",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Age squared,Age,Player's characteristics,Individual,,Age of athlete in years squared,Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Age squared,Age,Player's characteristics,Individual,,player age in years at the beginning of the arbitration season,Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Age squared,Age,Player's characteristics,Individual,,player age in years at the beginning of the transfer season squared,Yes Performance and Actual Pay in Norwegian Soccer,"Thrane, C.",2019,Age squared,Age,Player's characteristics,Individual,,Age squared,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Age squared,Age,Player's characteristics,Individual,,Age in years squared,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Black,Skin color,Player's characteristics,Individual,,A binary variable equal to unity if the player is non-White; otherwise zero.,Yes The determination of transfer fees in English nonleague football,"Dobson, S.; Gerrard, B.; Howe, S.",2000,Clubs,Number of clubs,Player's characteristics,Sporting,,Number of clubs for which the player has previously played.,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Clubs,Number of clubs,Player's characteristics,Sporting,,The number of clubs a player has been with,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Defender,Position,Player's characteristics,Sporting,,whether he was a defender or mid- fielder,Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,EU player,Nationality,Player's characteristics,Individual,,"non-Spanish players who belong to the European Union (EUplayer).",Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,FIFA rank of international team,National team FIFA rank status,Player's characteristics,Sporting,,National player in one of the top FIFA ranked nations (1=yes),Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,FIFA ranking,National team FIFA rank status,Player's characteristics,Sporting,,rank of national team in FIFA rating,Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Flexibility,Footedness,Player's characteristics,Individual,,"Ability to play predominantly with one foot (0), or equally good with both feet (1)",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Footedness,Footedness,Player's characteristics,Individual,,Two-footed ability or not,Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Footedness,Footedness,Player's characteristics,Individual,,No detail,No Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Footedness,Footedness,Player's characteristics,Individual,,"an advantageous skill, indicating more player flexibility",Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Footedness,Footedness,Player's characteristics,Individual,,"Personal information of the players is collected from http://www.transfermarkt.de/. The information on the website contains information about the origin, age, height, preferred foot and position of a player. Most explanatory variables used are self explanatory",Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,German,Nationality,Player's characteristics,Individual,,Nationality (1=German),Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Height,Height,Player's characteristics,Individual,,In centimeters,Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Height,Height,Player's characteristics,Individual,,this variable could increase the players’ capacity to defend or attack,Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Height,Height,Player's characteristics,Individual,,"Personal information of the players is collected from http://www.transfermarkt.de/. The information on the website contains information about the origin, age, height, preferred foot and position of a player. Most explanatory variables used are self explanatory",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Height,Height,Player's characteristics,Individual,,Soccer player height in centimeters,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Height,Height,Player's characteristics,Individual,,Height of player (in cm),Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Injuries,Injuries,Player's characteristics,Sporting,,the number of injuries during a season,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Legs,Footedness,Player's characteristics,Individual,,"Dummy variable for handling left leg, handling right leg, and both legs handling or ambidextrous (Bryson et al. 2013), taking the handling left leg as control level",Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Midfielder,Position,Player's characteristics,Sporting,,whether he was a defender or mid- fielder,Yes Factors that Determine the Market Value of Professional Football Players in Indonesia,"Adiwiyana, Hajar Iman; Harymawan, Iman",2021,Nationality,Nationality,Player's characteristics,Individual,,"Player status is the difference in each player’s status based on their nationality, an Indonesian citizen or not. In this study, a dummy variable was used, with 1 for foreign players and 0 for local Indonesian players. The average foreign player who has above average ability is brought inexpensive to an Indonesian club to improve the team’s quality in the season.",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Nationality,Nationality,Player's characteristics,Individual,,Continent of origin,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Nationality,Nationality,Player's characteristics,Individual,,"City of birth according to classification of continental football associations (CAF, CONCACAF, CONMEBOL, OFC, AFC, and UEFA; Kuethe & Motamed, 2010), taking the CAF association as control level",Yes Performance and Actual Pay in Norwegian Soccer,"Thrane, C.",2019,Nationality,Nationality,Player's characteristics,Individual,,"Player nationality dummy: Norwegian or foreign",Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Non EU player,Nationality,Player's characteristics,Individual,,"one dummy for foreign non-European players (No-EUplayer)",Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Number of loans,Number of loans,Player's characteristics,Sporting,,The number of loans of the player previously made by his then current club as of 1 May 1993,Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Number of previous clubs,Number of clubs,Player's characteristics,Sporting,,the number of previous clubs,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Number of previous clubs,Number of clubs,Player's characteristics,Sporting,,The number of league clubs that a player has been with,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Player’s age,Age,Player's characteristics,Individual,,Player’s age,Yes The wisdom of crowds and transfer market values,"Coates, Dennis; Parshakov, Petr",2021,Player’s age squared,Age,Player's characteristics,Individual,,Square of the player’s age,Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Position,Position,Player's characteristics,Sporting,,"Dummies: - forward: Player recorded as a forward in the Rothmans Football Yearbook - midfield: Player recorded as a midfielder in the Rothmans Football Yearbook - defender: Player recorded as a defender in the Rothmans Football Yearbook",Yes Bargaining in the transfer market: Theory and evidence,"Carmichael, F.; Thomas, D.",1993,Position,Position,Player's characteristics,Sporting,,"Player positions are divided into four categories - forward, midfield, defender and goalkeeper - and dummied accordingly (FOR, MID, DEF, GLK).",Yes Migration and football player market value: Evidence from Greece,"Dimitropoulos, P.E.; Travlos, A.Κ.; Panagiotopoulos, S.",2018,Position,Position,Player's characteristics,Sporting,,"position of each player on the field and is codified as goalkeeper (coded 1), defender (coded 2), midfielder (coded 3) and forward (coded 4).",Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Position,Position,Player's characteristics,Sporting,,"three dummies asso ciated to the field position of soccer players: defenders (Defender), midfielders (Midfielder) and attackers (Attackers). Hence, the goalkeepers remain as the reference group",Yes Testing for monopoly rents in the market for playing talent: Evidence from English professional football,"Gerrard, B.; Dobson, S.",2000,Position,Position,Player's characteristics,Sporting,,"The positional variables are derived from the classification by the Rothmans Football Yearbook of every player as a goalkeeper, defender, midfielder or forward. Two positional dummy variables were defined, DEFENDER and FORWARD",Yes Are soccer players older now than before? Aging trends and market value in the last three decades of the UEFA champions league,"Kalén, A.; Rey, E.; de Rellán-Guerra, A.S.; Lago-Peñas, C.",2019,Position,Position,Player's characteristics,Sporting,,"The players were classified into six positions: Goalkeepers (GK, n = 1224), Center Backs (CB, n = 3206), Fullbacks (FB, n = 2383), Center Midfielders (CM, n = 4609),Wingers (W, n = 1980), and Forward (F, n = 2660). This classification was done according to the information provided by the official UEFA website1.",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Position,Position,Player's characteristics,Sporting,,"Defender, midfielder or forward",Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Position,Position,Player's characteristics,Sporting,,No detail,No The impact of investors on transfer fees in the English Premier League: A study of the ownership structures,"Richau, Lukas; Follert, Florian; Frenger, Monika; Emrich, Eike",2021,position,Position,Player's characteristics,Sporting,,"Main playing position as indicated by http://transfermarkt.de/: Goalkeeper, Defender, Midfielder, Forward [Reference category]",Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,Position,Position,Player's characteristics,Sporting,,"position on the pitch according to the following codification: (1) Midfielder, (2) Forward, (3) Defender.",Yes Determinants of football transfers,"Ruijg, Jeroen; van Ophem, Hans",2015,Position,Position,Player's characteristics,Sporting,,"Personal information of the players is collected from http://www.transfermarkt.de/. The information on the website contains information about the origin, age, height, preferred foot and position of a player. Most explanatory variables used are self explanatory",Yes Arbitrator decision-making in the transfer market: An empirical analysis,"Speight, A.; Thomas, D.",1997,Position,Position,Player's characteristics,Sporting,,"DEF, MID and FOR are dummies for player position;",Yes Football league transfers: A comparison of negotiated fees with arbitration settlements.,"Speight, Alan; Thomas, Dennis",1997,Position,Position,Player's characteristics,Sporting,,player position [DEF (defender) MID (midfield) and FOR (forward) with the goalkeeper position taken as the standard] dummies,Yes "No pain, no gain? Effort and productivity in professional soccer","Wicker, P.; Prinz, J.; Weimar, D.; Deutscher, C.; Upmann, T.",2013,Position,Position,Player's characteristics,Sporting,,"Position of the player played in most of the games of one half season (central defense, left wing defense, right wing defense, defense midfield, right wing midfield, left wing midfield, offense midfield, attack)",Yes The labour market in association football: Who gets transferred and for how much?,"Carmichael, F.; Forrest, D.; Simmons, R.",1999,Previous clubs,Number of clubs,Player's characteristics,Sporting,,"PREV CLUBS 1: Player's records indicate he had played for one other League club apart from the club of registration on 1 May 1993 PREV CLUBS 2: Player's records indicate he had played for two other League clubs apart from the club of registration on 1 May 1993 PREV CLUBS 3: Players records indicate he had played for three other League clubs apart from the club of registration on 1 May 1993 PREV CLUBS 4: Players records indicate he had played for four or more other League clubs apart from the club of registration on 1 May 1993 Dummies",Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Regular designated player,Designated player status,Player's characteristics,Sporting,,No detail,No Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Second nationality,Nationality,Player's characteristics,Individual,,No detail,No English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Skin color,Skin color,Player's characteristics,Individual,,A binary variable adopting a value of 1 if the player is non-white; otherwise a value of zero is adopted.,Yes English league transfer prices: Is there a racial dimention? A re-examination with new data,"Medcalfe, S.",2008,Striker,Position,Player's characteristics,Sporting,,Binary variable equal to unity if the player is a forward; otherwise zero.,Yes English league transfer prices: Is there a racial dimension?,"Reilly, B.; Witt, R.",1995,Striker,Position,Player's characteristics,Sporting,,A binary variable adopting a value of 1 if the player is a forward; otherwise a value of zero is adopted.,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Team position,Position,Player's characteristics,Sporting,,"Dummy variable for each position (goalkeeper, defender, midfield, and forward), taking the goalkeeper position as control level",Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Transfer designated player,Designated player status,Player's characteristics,Sporting,,A transfer designated player (= TDP) receives a special status due to the amount of transfer fee paid,Yes Information precision in online communities: player valuations on www.transfermarkt.de.,"Prockl, F.; Frick, B.",2018,Young designated player,Designated player status,Player's characteristics,Sporting,,a young designated player (= YDP) is a player under 23 earning more than the maximum but due to his age is not considered as a DP yet,Yes Does the quality of a youth academy impact a football player's market value?,"Balliauw, M.; Bosmans, J.; Pauwels, D.",2021,Youth academy quality,Youth academy,Player's characteristics,Sporting,,"For each player, an average annual academy score is calculated, weighted by the duration the player stayed in a particular academy. The academy quality assessment scores of Double Pass (2020) are based on the Foot PASS instrument",Yes Football players’ brand as a factor in performance rights valuation,"Majewski, S.",2021,Brands,Highest segment,Labour,Market,Monetary valuation,"Dummy variable: 1 if player is a brand, 0 if not The decision which player should be marked as “stand out” (“1” in dummy variable), was based on the R-square of FGLS models (the best approximation was for the “1” values for the eight most valuable players).",Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Google citations,Internet searches,Popularity,,,"we propose to line up the players according to the total number of links reported by the Internet search engine Google, expressed in thousands, logged",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Google trend search index,Internet searches,Popularity,,,"how often a player’s name was searched on Google The data Google provides is scaled from 0 to 100 for a given time frame, so it refers to total searches for a term relative to the total number of searches over time.) logged",Yes Measuring football clubs' human capital: analytical and dynamic models based on footballers' life cycles,"Rubio Martín, G.; Manuel García, C.M.; Rodríguez-López, Á.; Gonzalez Sanchez, F.J.",2021,IG followers,Social media,Popularity,,,Number of followers of each football player from Instagram,Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,MERIT Index,Internet searches,Popularity,,,"The media visibility score is the factor by which the number of appearances in the media of a player multiplies the number of news articles of the representative (average) player in our sample. The index of media visibility is the score given to individual soccer players, computed with respect to the average of the top 2,500 players. The media visibility score is the factor by which the number of appearances in the media of a player multiplies the number of news articles of the representative (average) player in our sample.",Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,MERIT share in team,Internet searches,Popularity,,,Another variable related to media visibility that affects the economic value of players is the media visibility share that individuals accumulate in their own team.,Yes Recruiting talent in a global sports market: appraisals of soccer players' transfer fees,"Garcia-del-Barrio, P.; Pujol, F.",2020,New team MERIT value,Internet searches,Popularity,,,"To calculate the media visibility index of a soccer club, we aggregate the individual media visibility index of the 15 players in the team who are more often mentioned in the media.",Yes Talent and/or popularity: What does it take to be a superstar?,"Franck, E.; Nüesch, S.",2012,Non performance related press citations,Press citations,Popularity,,,Residuals of a regression of the logarithm of citations in over 20 German newspapers and weekly magazines on individual talent measures,Yes When the crowd evaluates soccer players' market values: Accuracy and evaluation attributes of an online community,"Herm, S.; Callsen-Bracker, H.-M.; Kreis, H.",2014,Public attention,Internet searches,Popularity,,,Total number of links reported by the Internet search engine Google,Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Public attention,Internet searches,Popularity,,,"Natural logarithm for the number of citations of the athlete in Google searcher (Herm et al., 2014)",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Reddit posts,Social media,Popularity,,,"the number of times a player’s name appeared in the “soccer”forum on Reddit logged",Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Star in team,Highest segment,Labour,Market,Monetary valuation,"it may also be significant to include the variable (Team-winner) to account for the best player in each of the 20 teams in the league, those who are the winners of the market at the team level",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Superstar 1,Goals per match,Performance,Metrics,,"Dummy variable that takes the value of 1 if the player scores from .25 to .40 goals per match (Lucifora & Simmons, 2003) in the 2015- 2016 season",Yes Uncovering Value Drivers of High Performance Soccer Players,"Serna Rodríguez, M.; Ramírez Hassan, A.; Coad, A.",2019,Superstar 2,Goals per match,Performance,Metrics,,"Dummy variable takes the value of 1 if the player scores more than .40 goals per match (Lucifora & Simmons, 2003) in 2015-2016 season",Yes Hidden monopsony rents in winner-take-all markets - Sport and economic contribution of Spanish soccer players,"Garcia-Del-Barrio, P.; Pujol, F.",2007,Superstar status,Internet searches,Popularity,,,"defining a series of dummy variables, taking the value 1 for the case of the few winners of the market (soccer superstars), and 0 for the other individuals. We define as superstars those players with the highest Internet exposure as measured by the Google variable. The names reserved for these qualitative variables are (Winner-all-5), (Winner all-10) and (Winner-all-20), for the greatest 5 superstars, the group of the 5 second-best players or those rated between the 11th and 20th position, respectively",Yes Identification of Factors Determining Market Value of the Most Valuable Football Players.,"Majewski, Sebastian",2016,Top player,Highest segment,Labour,Market,Monetary valuation,this dummy variable assumes value “1” for the five most valuable players and value “0” for the others.,Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Wikipedia hits,Internet searches,Popularity,,,"the number of times a player’s Wikipedia page was viewed logged",Yes Beyond crowd judgments: Data-driven estimation of market value in association football,"Müller, O.; Simons, A.; Weinmann, M.",2017,Youtube videos,Social media,Popularity,,,"and how many videos about a player were shared on YouTube logged",Yes ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,,