From Muhammad Ali to Mike Tyson to Canelo Alvarez, here, we take a look at some of the best professional boxers losing for the first time.
Also known as the "Fight of the Century," the legend Muhammad Ali lost for the first time to Joe Frazier via unanimous decision. One of the most shocking days in the history of boxing.
Joe Frazier suffered his first loss against George Foreman, losing the fight via TKO in the second round. Frazier lost his WBA, WBC, and The Ring heavyweight titles.
Foreman, who was 40–0 after defeating Ken Norton, lost for the first time against the legend Muhammad Ali via KO in the eighth round.
Evander Holyfield became 28-1 when he lost for the first time against Riddick Bowe via unanimous decision.
Mike Tyson's professional record of 37-0 became 37-1 after losing for the first time against Buster Douglas via KO in the tenth round. Tyson lost his WBA, WBC, and IBF heavyweight titles.
Lennox Lewis' first loss came against Oliver McCall via TKO in the second round that also resulted in Lewis losing his WBC heavyweight title.
Sugar Ray Robinson lost for the first time against Jake LaMotta via unanimous decision making his professional record 40-1.
Sugar Ray Leonard's professional boxing record became 27-1 from 27-0 when he was defeated for the first time by Roberto Duran via unanimous decision. He also lost his WBC and The Ring welterweight titles.
Roy Jones Jr. was disqualified for hitting Montell Griffin after a knockdown that caused his 34 win streak to end.
Julio Cesar Chavez, who had a professional record of 89–0–1 (W-L-D), suffered his first loss via a split decision against Frankie Randall. He lost his WBC light welterweight title.
Oscar De La Hoya was 31-0 before he suffered his first loss against Felix Trinidad via majority decision making his professional record 31-1.
Shane Mosley's 38-0 record turned into 38-1 when he lost for the first time against Vernon Forrest via a unanimous decision.
Miguel Cotto suffered his first loss against Antonio Margarito via TKO in the eleventh round. He also lost his WBA welterweight title.
Manny Pacquiao lost for the first time against Rustico Torrecampo via KO in the third round.
Erik Morales suffered his first loss against Marco Antonio Barrera via unanimous decision. Morales lost his WBC featherweight title.
Canelo Alvarez has lost only once in his career. He lost against Floyd Mayweather Jr. via majority decision, resulting in him also losing his WBC and The Ring light middleweight titles.
Gennady Golovkin's first, and only loss came in his rematch against Canelo Alvarez via majority decision. He lost his WBA (Super), WBC, and IBO middleweight titles.
Deontay Wilder's only loss came in a rematch against Tyson Fury via TKO in the seventh round. He lost his WBC heavyweight title.
Anthony Joshua's professional record 22-0 became 22-1 when he suffered his first loss against Andy Ruiz Jr. via TKO in the seventh round. It was one of the biggest upsets in the heavyweight division.
Wladimir Klitschko lost for the first time against Ross Puritty via TKO in the eleventh round. He also lost his WBC International heavyweight title.
Andy Ruiz Jr. suffered his first loss when he clashed for the vacant WBO heavyweight title against Joseph Parker via majority decision.