Muhammad Ali, Joe Frazier, George Foreman, Leon Spinks, Michael Spinks, Lennox Lewis
, Wladimir Klitscho?
no one knows
ali
Mohamed Ali
Muhammad ali
Light heavyweight boxing gold medalist Muhammad Ali, known in 1960 as Cassius Clay.
Rocky Marciano
Not at this time.
Rocky Marciano is the only heavyweight champion not to loose a fight.
geroge forman
Joe Louis
mike Tyson aged 20.
joe louis