Joe Frazier and Mike Tyson of course who both stood less than six feet. Dwight Muhammad Qawi who was barely 5-7 and already aging when he campaigned beyond the light heavyweights, also had some good results.

ruslan chagaev n mike tyson. Gone r the days of the 5 ft 11 heavyweight. If ure gonna compete with the best, u gotta be at least 6 ft 5.

Rocky Marciano, Joe Frazier

Dwight Braxton RE:Muhammad Qawi.

David Haye

ezzard charles, gene tunney, archie moore, floyd pattersob, etc etc