James TeHuna got his UFC contract on the back of a tournament win over Anthony Perosh in Australia, but he should have been DQed in that win.
He KOed Perosh with punches and then after the referee stopped the fight and had separated them, TeHuna muscled his way back to Perosh and stomped on his head.
Not only was it way after the separation, but head stomps (or any kicks to the head of a downed opponent) are also illegal under the rules of that state.
The video is up on youtube and the headstomp is conveniently edited out.
It's the reason I'll never tire of this gif. Artistic credit to Zombie Prophet and Mauricio Rua.