Shavers did not drop Ali at any point. Rattled his bones with several rights, but never knocked him down.
Jack Johnson, simply for the way he badgered Tommy Burns. And there were others, reportedly.
Claude Noel and his successor, Arturo Frias.
Carlos Zarate Sean O'Grady Ken Norton
Well, Tommy's jaw was not going to transcend eras, and that--along with what usually seemed to be a lack of stamina (Foreman fight...