where CARDS is the total number of cards received (yellow and red), FOULS are the number of fouls committed by a player and GAMES are the total amount of games a player has appeared in, in a given season i which is also present for all other variables. There are a few variables that have not been taken into account due to the inability to quantify them in a regression, although they might have a minor effect on the number of cards a player receives e.g. club culture, nature of the player. These are incorporated into the error term, €i. The variables SKINTONE and POSITION represent ordinal and nominal data respectively and are each represented by their own dummy variables as seen in Table 1. Likewise, VETERAN is a dummy variable equal to 1 if the player is over 33 years old, and 0 if otherwise, which again can be seen in Table 1.