"My power is discombobulatingly devastating I could feel is muscle tissues collapse under my force. It's ludicrous these mortals even attempt to enter my realm." -Mike Tyson For a time he was maybe the best ever.
Sugar Ray Leonard came out of retirement to challenge Marvelous Marvin Hagler. Leonard won the very close decision. If you ask 100 people you will most likely get 50 for Hagler and 50 for Leonard. One of the closest fights especially as a major fight.