a lot of his fights, a lot. Chuvalo once said that the first Liston fight was his best performance, he may be right although he wasn't experienced and physically mature yet. All the sixties defenses are great to watch, no one in heavyweight history could beat him then, he fought all kinds and made them all look bad. No telling how much more he would have done in the prime years. Post-exile? He got lazy in training, and it showed. Lots and lots of his fights are hard to watch post 70. He proved his greatness but he also looked horrible in many of his fights, some of them I can't even watch. Lucien Rodriquez or whatever his name was, was an awful performance, so was the Mathis fight. he only prepared properly when he lost after Norton wherein he went on a string of good performances, after the forman fight he began fucking around in training again and taking punishment he wouldn't have had to had he trained right. Losing to Spinks also coaxed him to wring out one last decent fight even though he had nothing left really. Then, I don't have to go into the Holmes and Berbick fights. Still, with his natural ability, 75 percent of ali was enough to kayo lots of guys for the first have of the seventies. After Frazier he never kayoed a meaningful opponent or knockedown a meaningful opponent ever again. He was shot. (also, doug Jones didn't knock him down you're thinking of Sonny Banks.