Muhammad Ali
Sugar Ray Leonard
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Muhammad Ali leads 2 of 3 categories. Our all-time ranking places Muhammad Ali at #2 and Sugar Ray Leonard at #7.
Head-to-head FAQ
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The case for Muhammad Ali
The most consequential heavyweight case on this list: three-time champion, 56-5 record, and the political stage that outlived the ring. Ali never shared a ring with Mike Tyson — Ali's last fight was December 1981; Tyson's pro debut was March 1985 — so this VS page is peak-era teaching marks, not a real head-to-head.
The case for Sugar Ray Leonard
The defining star of boxing's 1980s golden age, Leonard finished 36-3-1 with 25 knockouts and won world titles in five weight divisions. A 1976 Olympic gold medalist, he combined dazzling hand speed, showmanship and, when needed, real grit and power. His greatness is measured by opposition: he beat every one of the other 'Four Kings,' outlasting Thomas Hearns in a 1981 welterweight classic, breaking Roberto Duran in the No Mas rematch, and, most improbably, coming off a multi-year retirement and detached-retina layoff to out-point the fearsome undefeated Marvin Hagler for the middleweight title in 1987. That willingness to take the hardest fights, often after long absences, and win them defines his resume. He fought less often than the all-time volume leaders, and some of his verdicts were close, but few fighters have beaten a comparable concentration of Hall of Fame peers at their peak.