I could see Pac taking a more conservative approach and pot-shotting him for 12 rounds. Rios doesn't have the timing or explosive speed that Marquez has where he needs to be worried about getting caught with something he doesn't see coming.

I think a Pac decision win is the best bet. He's fighting a guy who he knows has an iron chin, is tough as nails and loves to bang, but is obviously a lot slower and technically inferior. I think he'll cruise to a decision and not overexpose himself trying to get a KO.