Imagine a packed arena: 27-year-old Julian Jackson vs Philly vet Buster Drayton in a 153-pound WBA junior middleweight title fight. Jackson unloads heavy blows early, dropping Drayton in Round 2—but Drayton pops up laughing. Drayton briefly pushes Jackson back in Round 3, only for Jackson to land a devastating left hook, flattening him at 2:57. This KO cemented Jackson’s status as a top finisher; he later won a middleweight title. Drayton fought till 1995. Ever seen a knockout that stuck with you?