George Chuvalo by far.
Look at the monsters he fought and never went down.
George Foreman, Jake Lamotta, and "The Atomic Bull" Oliver McCall was prime Mike Tyson's sparring partner, and from what I heard was never knocked down.
Marvin Hagler's another guy I never even say hurt, even against Hearns, Mugabi, and Duran
Don't forget about Ali. He fought Foreman, Liston, Shavers, Holmes, and a ton of killers & it took the most hellacious left hook I've ever seen from Joe Frazier to knock him down & he got right back up.
Look at the monsters he fought and never went down.
George Foreman, Jake Lamotta, and "The Atomic Bull" Oliver McCall was prime Mike Tyson's sparring partner, and from what I heard was never knocked down.
Marvin Hagler's another guy I never even say hurt, even against Hearns, Mugabi, and Duran
Don't forget about Ali. He fought Foreman, Liston, Shavers, Holmes, and a ton of killers & it took the most hellacious left hook I've ever seen from Joe Frazier to knock him down & he got right back up.
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