Footy fights happen all of the time. Although it's usually just jumper punches. Nothing serious.
In school, I haven't been in a fight in something like a two months. It wasn't really a fight. We were playing dodgeball, and I got some kid out. He then picked up a ball and threw it into my face. So I ran after him and decked him (wooden floor ftw). Then some guys ran across, and it turned into stacks on. >_>