Serra actually caught GSP with a shot to the back of the head numbnuts. that result was proven to be a combination of GSP's lack of focus and lack of preparation. Serra didn't even have a hope in sniffing GSP with a hook, nevermind catching him with shit in the rematch which GSP dominated every aspect of. The simple reality is GSP had not been in any trouble like Condit put him in since that Serra fight, and thats what it took, was a perfectly set up highkick off a combo. Nick Diaz is not a big one shot puncher, but rather a high volume puncher that wears you down over the course of a fight, while forcing you to fight his fight. Nick Diaz is not going to catch GSP with one big shot, and he will not dictate GSP for a second or get GSP off his game, fighting Nick's fight. Please don't pretend to be smart loser.