Kimbo didn't build his hype up at all; you can give credit to that scumbag Gary Shaw. He's been nothing but humble about his whole career and it really showed in the post fight interview.

That hammer fist to the back of the head is what did him in. Seth had a good amount of torque on it, did considerable damage and sealed the deal on him. Likewise, that referee was garbage for not immediately stopping the match right after it and let Kimbo gather himself.