The only heavyweight champion to retire undefeated, Rocky Marciano had a perfect 49-0 record. The boxing legend did not train to win; he trained as if his life depended on winning every fight. His legacy remains unbeaten,
The only heavyweight champion to retire undefeated, Rocky Marciano had a perfect 49-0 record. The boxing legend did not train to win; he trained as if his life depended on winning every fight. His legacy remains unbeaten,