Which of these legendary boxers finished their professional career undefeated?
Joe Louis
Muhammad Ali
Rocky Marciano
Sugar Ray Robinson
Fact: Rocky Marciano is the only heavyweight champion in boxing history to retire with a completely unblemished professional record. Fighting from 1947 to 1955, Marciano finished his career 49–0, with an astonishing 43 knockouts, a feat that has never been matched at the heavyweight level. While other greats on this list—including Muhammad Ali, Joe Louis, and Sugar Ray Robinson—are considered among the sport’s all-time best, each suffered at least one professional loss. Marciano’s perfect record remains one of boxing’s most enduring and celebrated achievements.
Correct Answer: Rocky Marciano