What a list - how am I supposed to only pick one?

I'd leave out Pernell Whitaker and ressurect the rest.

George Foreman - He would walk straight through the current Heavyweight division - anyone who thinks Wladimir Klitschko could stand-upto him needs their head testing.

Thomas Hearns - That would be frightening! His right hand landing on Cotto's chin would be Goodnight Cotto. Hearns had the reach and Cotto doesn't know how to get out of the way.

Sugar Ray Leonard - To see him at Welterweight making an absolute mug of Floyd Mayweather. Leonard had greater speed, agility and power. Also when Leonard had someone hurt he was one nasty Mofo.

Gerald McClellan - Him and Kelly Pavlik would be some fight.