To me, it's a toss up between Marciano and Ali.

No question that they were two different styled fighters, but none the less both the greatest in their own right.

Ali :

Record: 56 Wins, 5 Loss, 37 Knockouts

1960 Olympic Light Heavyweight Gold Medallist

Heavyweight Champion 1964-67, 1974-78, 1978-79


Marciano :

Record: 49 Wins, 0 Loss, 43 Knockouts

The ONLY undefeated champion in ANY weight class in the history of gloved boxing.

Heavyweight Champion 1952-1956


Tough call.


Don Cardi


Don Cardi cool

Five - ten years from now, they're gonna wish there was American Cosa Nostra. Five - ten years from now, they're gonna miss John Gotti.