Rocky Marciano got out because he had a bad back and I for one can tell you, hitting a heavybag the way he did ain't great for your back. He was going to have a comeback fight vs Ingemar Johannsen...I think he would have been 50-0-0 after that....maybe, MAYBE Floyd Patterson's speed would have given Rocky trouble but I think he would have remained unbeaten until Sonny Liston got up there, just because by the time Liston started Rocky was finishing up.


Joe Calzaghe could have stuck around for a few more fights.

Felix Trinidad could have done more...I still wish he and Shane Mosley had fought.