Leonard vs. Hearns I (1981)

Sugar Ray Leonard trailed on all three scorecards after 13 rounds, then unleashed a 14th-round flurry that forced a stoppage against Hearns—erasing a 7-point deficit in the final frame. The bout grossed over $40 million in 1981 dollars, a welterweight record at the time. Hearns' 8th-round knockdown seemed decisive, securing a victory that redefined welterweight limits.