The best way to get even is to not let it bother you.
If Jason was doing it on purpose, or even if Brad thought he was, the best thing to do is cram about 5-6 in a row, then tell him "I love it when you do that", not have a petulant little hissy. You start striking, then let the opponent know that he has motivated you to do so, and I GUARANTEE that the behavior will cease.
I tend to root for Brad, and I'm not really a fan of Jason's, but quit blaming your inability to throw good shots on somebody else. Brad was just struggling to throw it good. That made him frustrated, and he took it out on any little thing that bothered him even slightly.
At the professional level, don't you have to be better than that?