Well, all kinds of things, he made a maneuver on the court so that I would be on one end to prove that I could not move, and I pointed out to him that it looked intentional and there was no need for it, and then he lashed out at me, saying that he did not need to do that to make me look bad, that I make myself look bad the way I hit the ball (I know, ridiculous comment/reason to headbutt someone).