Re: Please, name fighters whould wouldn't have been KO'd by Márquez's punch
As other people have said, any fighter who didn't lunge forward with his feet off the ground and his hands out to the side probably wouldn't get KOed by that punch because they'd never get hit with it.
Pac has a ton of bad habits that his athleticism provided cover for against opponents who didn't have the ability to exploit it. But Marquez isn't Cotto, or Margo, or a feather fisted Bradley. You make mistakes against one of the best counter-punchers ever and you're eventually going to pay for it.