I have never been into it but the very first ultimate fighter, back when it had few rules, had one and woa. He lost due to a suspicious thing where the entrance gate game open causing a reset but without it he 100% would have won. It was amazing as the other guy was not exactly small and got a full on kick on him. I mean as best your going to get with full force and the sumo shrugged it off like nothing and then he caught him with what seemed like a casual slap that winged him and you would have thought he was hit by a truck. gracie never faced him but I doubt he would ever have been able to get a lock on him. Wish he had competed the next year.