Who really knows at this point I would pick Castillo a few years back to beat any version of Pac that we've seen simply because he is much bigger, taller, and hits unbelievably harder then anyone Pac has ever faced.. Im not sure Manny could handle his power whatsoever... Manny could win if the fight happened today I think, but he'd still have to be smart and go in and out with lateral movement.. If he landed something on Chico then barged in trying to follow up like he has done I could see Diego landing something fierce. Would really surprise me if Manny could take his best punches, or if Chico couldn't take his.. It would need to be an accumlated beating from Manny, but to do that he would have to pace himself and fight smart as Chico would always have the ability to end it with one punch imo.