Ezzard Charles once said

Not too many people could have taken the hook he landed on Charles...not too many...Marciano not only had a cement chin but he was hard to discourage, he invisioned VICTORY,while on the floor. Marciano also had the best recupritive powers that I have seen and he proved it again in subsequent fights...I have to say the Charles given hook was well timed and had everything on it...the hook Walcott landed on Marciano would have felled a horse but the Charles given hook would have killed it...