[All i do is win]

How could anyone prove if this racial slur occurred?

Well I'm no genius but I'd say the kid didn't just come out of nowhere and knock him out for no reason. I know the kid and he isn't a very violent person but if you press the wrong buttons on someone anyone can become that way. I was there and the kid was crying when he came to the sidelines because of what had happen and yelling out what the other player had said to him.