Calzaghe is desperate to emulate his hero Rocky Marciano, the heavyweight champion of the world between 1952 and 1956, arguably boxing's greatest unbeaten icon.
BBC: Calzaghe ready to cement legacy
2.
Larry Holmes was 48-0 and one victory shy of matching Rocky Marciano's perfect career record, when Michael Spinks put the kibosh on the Easton Assassin.
WSJ: Mayweather's Next Opponent: History
3.
Rocky Marciano (49 wins: 43 KOs, 6 decisions) and Mayweather (43 wins: 26 KOs, 17 decisions) never got to 50 wins, but neither one ever lost, either.
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