We've heard about it too many times now unfortunately. Parents that are way too serious about their child's sports feel the need to get involved.
Another day, another fight at a what appears to be a kids soccer game. Two dads are face to face in an argument then one just decides to blast the other dad with a headbutt. Dude then takes a few dozen haymakers to his head but somehow manages to stay upright.
Great job setting an example for our next generation.