Muhammad Ali
Mike Tyson
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Dead even across the measured categories. Our all-time ranking places Muhammad Ali at #2 and Mike Tyson at #11.
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The case for Muhammad Ali
The most consequential figure in boxing history and, by his own and much of the world's reckoning, the greatest heavyweight. Ali finished 56-5 with 37 knockouts, but his record undersells him: a draft-refusal exile stole three-and-a-half prime years, and he returned to win the title twice more, becoming the first three-time lineal heavyweight champion. He beat a murderer's row of champions, Sonny Liston, Joe Frazier, George Foreman and Ken Norton, in fights that defined the sport: the 1964 Liston upset, the Fight of the Century, the Rumble in the Jungle, and the Thrilla in Manila. As a young heavyweight he moved and jabbed like a middleweight, revolutionizing what a big man could do; as an older one he showed extraordinary chin and ring guile with the rope-a-dope. His athletic gifts, showmanship and moral courage made him the most recognized athlete on earth.
The case for Mike Tyson
At his peak the most terrifying force boxing has seen, Tyson became the youngest heavyweight champion in history at 20 years and 4 months, winning the WBC title in 1986 and unifying all three belts to reign as undisputed champion by 1987. Trained in Cus D'Amato's peek-a-boo style, he fused a shorter man's crouch and head movement with explosive one-punch power in both hands, blitzing the division and demolishing Michael Spinks in 91 seconds in 1988. His record finished 50-6 with 44 knockouts. The shocking 1990 upset by Buster Douglas, a prison term, and the 1997 disqualification for biting Evander Holyfield fractured what might have been an all-time-great career into a merely great and unforgettable one. But at his best, roughly 1986 to 1989, few heavyweights in history project the aura of inevitability Tyson did, and none matched his blend of speed, power and intimidation.