Fenster, Ali was pretty much the most skilled heavyweight ever to grace the ring.
He survived against MURDEOUS puinchers such as Foreman, Liston, Frazier, Shavers, Lyle, young and Bonavena. They were all unbelievable Punchers! None of them could knock hime out!

He also went in against great Heavyweight technicians who could punch, such as Floyd Patterson, Larry Holmes and Ken Norton none of whom could KO him.

Ali has a chin which rates up there alongside Haglers.

Ali soaked up punishment when he wanted too, avoided it when he needed too and administered it as he wished too.