Imagine settling in for a boxing showdown, only to see it end before your first chip crunch. On July 26, 1986, Mike Tyson notched his fastest pro knockout—taking down Marvis Frazier (son of legend Joe Frazier, fresh off beating James “Bonecrusher” Smith) in 30 seconds.

Tyson charged at the bell, trapping Frazier in the corner with a right then two crushing uppercuts; Frazier was unconscious before hitting the canvas. Referee stopped the count at 5 for safety. Tyson sensed his pre-fight hesitation, checked on him post-fight, and this win fueled his 1986 rise to youngest heavyweight champ. Frazier retired after 3 more fights.

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