Here is my top 10 list: 1. Rocky Marciano
2. Larry Holmes
3. Muhammad Ali
4. Joe Louis
5. Jack Dempsey
6. Gene Tunney
7. Ezzard Charles
8. Jack Johnson
9. Sonny Liston
10. Joe Frazier
Special mention: Max Baer, George Foreman, Lennox Lewis, Ken Norton........and Butterbean lol
2. Larry Holmes
3. Muhammad Ali
4. Joe Louis
5. Jack Dempsey
6. Gene Tunney
7. Ezzard Charles
8. Jack Johnson
9. Sonny Liston
10. Joe Frazier
Special mention: Max Baer, George Foreman, Lennox Lewis, Ken Norton........and Butterbean lol