Four Perfect Boxing Records Leave Unanswered Questions

Menu Results Schedule Rankings Videos Tickets Forum Contact Us Menu Rankings Schedule Results Boxing Live Four Perfect Boxing Records Leave Unanswered Questions Google News Preferred Source By Ken Hissner - 10/04/2026 - Comments Rocky Marciano, Floyd Mayweather Jr., Joe Calzaghe and Terence Crawford each reached retirement with at least 40 professional victories and no losses or draws. Those records deserve recognition, but they cannot answer what would have happened against the dangerous opponents each left unfought.

An unbeaten record reflects completed fights. Retirement closes the book before another challenger can change it. The question is how much the zero tells us when assessing these four champions.

Marciano won the heavyweight championship by knocking out Jersey Joe Walcott in the 13th round in September 1952. He made six successful defenses before retiring in 1956, including victories over Walcott, Roland LaStarza, Ezzard Charles and Archie Moore.