1. Muhammad Ali
"The Greatest" – 3x Heavyweight Champion, cultural icon.
2. Mike Tyson
Youngest heavyweight champion, known for power and speed.
3. Floyd Mayweather Jr.
Undefeated, 50-0 record, defensive genius.
4. Manny Pacquiao
Only boxer with world titles in 8 divisions.
5. Joe Louis
"The Brown Bomber" – 25 consecutive title defenses.
6. Sugar Ray Robinson
Often regarded as the greatest pound-for-pound boxer ever.
7. George Foreman
Two-time heavyweight champion, oldest to win at 45.
8. Rocky Marciano
Retired undefeated, 49-0 with 43 knockouts.
9. Evander Holyfield
Undisputed cruiserweight and heavyweight champion.
10. Lennox Lewis
Three-time world heavyweight champion, Olympic gold medalist.