i dont see Vitali losing to anybody at heavy or cruiser i dont see floyd losing to anybody around his weight manny beats everyone but floyd and that fight isnt happening so that makes martinez my answer
Martinez could barley handle barker, lol an opponant booked with the means of Sergio to destroy... lets face it nobody knew who barker was when the fight was signed, and he gave all that sergio could handle and then some... I don't like sergio or his fighting style... he's sloppy and keeps his hands down to much, which is why barker gave him problems... you fight an elite fighter with that style and you will get beat.
Martinez. He's getting up there in age and it will catch up to him quicker than the others. I'd pick Vitali if the Heavyweight division wasn't so weak. There is no one on the horizon that can be a threat to him.
I agree with everyone else: Sergio Martinez loses first. PAC don't lose until he is well past prime unless to mayweather. Vitaly to big/strong to lose to any of the guys at hw currently. And Floyd ain't losing to anyone until he is well past prime as well, or pacman. Sergio looked very hittable against barker, I don't know if he just didn't get up for this fight or what though.
Paul Williams beat Martinez at "this stage" of his career so it has to be him. Floyd and Pacquaio are both beatable if they fight each other. Vitali has no challenges besides his bro.
Martinez lost a few fights back. He is getting up there in age where his main attributes will begin to fade. If he fights the top contenders at 160, which he will inevitably have to, he will lose again sooner rather than later.
Martinez I don't know why he puts his hands down trying to bait opponents. Maraville is fast but he ain't "Roy Jones Jr" fast.