50 fights, never defeated.Fought everyone who came along, including his own brother.

How do you rate the greatest? John L. Sullivan held the title for 10 years with his bare hands.
Louis 12 years.He never ducked anyone.
Ali had it all, speed, power and endurance. When he was asked who was the best boxer he ever fought he named Floyd Patterson.

Ernie Shavers had the most devastating punch, George Foreman was next and Marciano was third.

Ok, I used to be a fight fan.