Joe frazier (rip) would be the smallest opponent wlad....

[Peter Plys 44]

Probably the only fighter 'size wise' comparable to frazier is mormeck, And even then mormeck has a naturally bigger/more athletic frame than frazier had!

Chambers and byrd are slightly bigger men than frazier.

in Frazier's defense, neither Klitschko has the one punch power of Foreman

not saying they don't bang, but neither is as big of a puncher as Big George, also Frazier had more power than Mormeck, better head movement, stamina, and the tightest compact left hook in HW history, Wlad should be the favorite, but if Haye was given a chance by more than a few there is no way in hell that you would be able to count Joe Frazier out of pulling off the win

All empiric evidence shows that especially Wlad has a much harder one punch power than Big George - but of course Foreman is from a past time and therefore better.... - everything has developed since the 60s except boxing.... :-D

Wlad vs. JF would be a mismatch as most matches with today's HWs vs. yesterdays HWs. In 30-40 years people will also claim that if their present HWs fought the K2 then they would lose. Of course K2 would not be able to compete with future HW greats. One could be great in his own era but one would also be non-competitive going 4-5 sports generations forward. Better nutrition, genetic, tactics, training regimes etc. etc. - the evolution race will never stop even though many posters think that boxing is static.