In one fight in Dallas (I had the video but can't find it any more). One guy picked up another guy over his head, turn his that guy's body upside down, and then smash his opponent's head as hard as he could down to the ground. He did't get point for that. But since his opponent could not continue, he won that fight.All sweeps are allowed. When someone goes down their opponent will have two seconds to score on them.
The "hammer fist" won't get score in "point fight". Even today, I still don't know why.