How Many Boxers Have Held the Title of Undefeated and Undisputed Heavyweight Champion of the World?

Only three boxers have ever held the title of undefeated and undisputed heavyweight champion of the world:

  1. Rocky Marciano (1952-1956): Marciano retired with a perfect record of 49-0, including 43 knockouts. He successfully defended his title six times before retiring at the age of 32.
  2. Joe Louis (1937-1949): Louis held the title for over 12 years, defending it 25 times. He retired with a record of 66-3, with 52 knockouts.
  3. Floyd Mayweather Jr. (2013-2015): Mayweather is the only boxer to hold the title in the modern era. He retired with a perfect record of 50-0, including 27 knockouts.

Related Questions:

  1. Who was the first undefeated heavyweight champion? Rocky Marciano
  2. How many times did Joe Louis defend his title? 25 times
  3. Is Floyd Mayweather Jr. the only undefeated boxer in history? No
  4. Which boxer held the heavyweight title for the longest time? Joe Louis
  5. Who retired with a record of 49-0? Rocky Marciano

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