The phrase "it's just a game" absolutely applies here. 

A recent high school football game in Pennsylvania took an ugly and dangerous turn when a fight broke out between the teams. One player decided to take the argument to an especially violent level by tearing off the helmet of one of the opposing players and proceeding to beat him with it. 

It's an incident that, acording to this report, could actually lead to criminal charges. 

We really hope this isn't a new trend.