I wonder if you lose a certain amount of fights if it will make you stop. I am 23-8-1 with 16 KO's. I have only been KO'd twice. There is one dude that will give you fits. I wish I could remember his name, but if you are 18 fights in, he'll come up quick. He wanted to fight toe to toe, but I moved that to the outside because he was lightning quick. When I moved to outside, he did too and he was still lightning quick. I lost to him twice on the third fight I caught him in the 9th and knocked him down and then finished him off with a liver shot for the TKO. I've had a couple guys beat me twice. Every fight is pretty much a challenge, although I destroyed that Silva clown 99-91 on all 3 cards.