The game of football is an incredibly intense sport. In order to succeed in the sport, you have to be an intense individual that plays with passion and a ton of emotion—and one of those emotions can be anger.
Taking a look at the all-time great football players, a ton of them were simply angry individuals on the football field. They either wanted to prove a point as if they played with a chip on their shoulder or they simply wanted to physically punish anyone that stood in their way.