When former heavyweight champion Rocky Marciano held the unbeaten record at 49-0, he was targeted for some sixty-one years until Floyd ‘Money’ Mayweather, Jr.
In 1964, 'Smokin' Joe Frazier lost in the Olympic Trials to Buster Mathis twice. Mathis broke a thumb in the second match, so Frazier went on to the Olympics
Examining the ultimate cost of a monumental upset victory: Can Andy Ruiz Jnr go on to do what the likes of Buster Douglas, Hasim Rahman and Corrie Sanders could not? By Elliot Worsell