Floyd Mayweather Jr.
Sugar Ray Leonard
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Floyd Mayweather Jr. leads 1 of 2 categories. Our all-time ranking places Floyd Mayweather Jr. at #5 and Sugar Ray Leonard at #7.
The case for Floyd Mayweather Jr.
Mayweather retired at a perfect 50-0, breaking Rocky Marciano's iconic mark, having won 15 world titles across five weight divisions from super featherweight to super welterweight. The most defensively brilliant fighter of his era, he built his mastery on the Philly shell, elite reflexes, ring IQ and pinpoint counter right hands, making elite opponents miss and pay for two decades. He beat a long list of champions, Oscar De La Hoya, Manny Pacquiao, Canelo Alvarez, Juan Manuel Marquez, Miguel Cotto and Shane Mosley, and was virtually never in trouble across 26 years. He also transformed the business, becoming boxing's biggest pay-per-view attraction and generating over $1.3 billion in career PPV revenue; the 2015 Pacquiao fight alone drew roughly 4.6 million buys. Critics note a cautious, risk-averse style and carefully timed matchmaking, but the ledger, unbeaten, five divisions, a generation of top opponents defeated, is nearly unanswerable.
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.