Being a huge MMA fan, I think I can side for this rule.
You can knee someone in the head if they're "down", but not if both hands are on the mat.
You gotta have this rule, because you have to defend the fighter. All rules are made in spite of whether or not the fighter is in a position to defend himself if someone is trying something on them.
You can't let the sport get out of control and come off as barbarish and no rules. If so, the sport won't last very long.
Well said. If you can control your opponent on the ground well enough to knee him in the head, well, you really don't NEED to do so, do you?
One of the organizations-- the UFC, I think, before Dana White and his partners bought it really didn't have many rules at all. You could fish-hook a guy; poke him in the eyes, knee him while he was down, no real weight classes, ect etc-- and it led to a lot of states banning the sport.
White got control and instituted some new rules and the sport took off.
