Rocky Marciano
Rocky Marciano (born Rocco Francis Marchegiano; September 1, 1923 – August 31, 1969) was an American professional boxer and the World Heavyweight Champion from September 23, 1952, to April 27, 1956. Marciano is the only person to hold the heavyweight title and go untied and undefeated throughout his career. Marciano defended his title six times, against Jersey Joe Walcott, Roland La Starza, Ezzard Charles (twice), Don Cockell, and Archie Moore. He has been ranked by many boxing historians as one of the best heavyweight boxers of all time.