Rocky Marciano (1923–1969) retired as the only world heavyweight champion to finish his career undefeated. His record of 49–0 with 43 knockouts remains unmatched in heavyweight history.
Career Highlights
- KO'd Jersey Joe Walcott in the 13th round to win the title in 1952
- Defeated former champion Joe Louis in 1951
- Known for relentless pressure, iron chin, and devastating right hand (the Suzie Q)
Marciano wasn't the most technically gifted but his conditioning, heart, and punching power made him impossible to stop.
Reference:
TaskLoco™ — The Sticky Note GOAT
