Who came closest to KOing or stopping Ali? 1960-1978

[ICB]

Cooper, a perfect left hook! If Cooper had of won what would have happened to Ali?

Done basically the same except getting title shot later against Liston prolly in 1965.

I guess Cooper V Liston would have been made? How would big Henry have gone?

Stopped on cuts or koed in about 5 i would think.