Re: If Pacquiao's head doesn't snap back when punched by JMM...
It honestly doesn't mean much. Marquez is always cautious and if you take a look at his face he's got this "prepared for a big shot" kind of expression through the whole fight. He keeps his head firm. Pacquiao is a wild boy and fights the entire fight without any regard for anything, he is willing to get hit in order to hit. Marquez ain't trying to do that at all.