What metric did you use as a measure of player performance? There are very detailed statistics, created by a publicly available algorithm, on the performance of every player after every match. It’s much more than just goals scored, and is very objective: How far did the player run during the game? There is an interesting and growing literature on the effect that football fans have on teams as a whole. What we wanted to do was look at the individual players, to see any differences in performance between those who are from certain ethnic backgrounds.

Source: International New York Times July 16, 2021 20:26 UTC