Like, for example, the fine RARS robot racing league, or whatever. Sports are too trivial for humans to participate in any more, is my understanding of the matter. And that's the whole idea behind the RoboCup 2000. MOST of the soccer happens in the magical ghost world of computer simulations, where everything interesting happens anyways. Actually, it'd be better if they had flame-throwers, but I'm not particular.
Soccer is violent enough.
Tell them Pigdog sent you.