A couple of his opponents got unlucky enough to actually knock him down.

I say unlucky because if he got floored, he would just get pissed off and then beat the living daylights out of them.

He was a monster in the ring. So much Stamina and so much Relentlessness. I cannot think of anyone who could have beat him at 140. There may have been a couple who could deal with him, but they would be in the fight of their life.