Sugar Ray Leonard

Sugar Ray Leonard's 36-3-1 record with 25 knockouts across five weight classes demonstrates versatility outpacing #8 Marvin Hagler's single-division dominance. His 1987 split-decision upset of Hagler, where Leonard landed 48% more jabs per round than the average welterweight, proved his ringcraft unmatched in the 1980s. Leonard's trilogy with Roberto Duran (two wins, one loss) generated $75 million in revenue, 25% higher than Hagler's top-earning fight with Thomas Hearns, solidifying his legacy as a pound-for-pound elite.