Fighters from 160 up that could beat Valuev?

I think there are a decent amount. I'm sure Valuev was better than he is now, something that has flown under the radar is that the big lad is probably passed his prime and is starting to fade. Anyway, who beats him? could a Middleweight concievably beat a 300 pound and 7'2 Giant. Champions don't come much more limited than Valuev in any weightclass, if his last outing against Holy is an accurate gage of where the big man is at now.