Name a fighter's absolute best years in the ring

[Bill Paxtom]

Floyd Mayweather: 2000 to 2005

Manny Pacquaio: 2006 to 2010

Roy Jones: 1994 to 2000

Smokin' Joe Frazier ........ mid-1967 thru February 1970 > {Up until he broke his right ankle in April 1970}