Unbeaten heavyweight champion Rocky “The Brockton Blockbuster” Marciano, 49-0 (43), of Brockton, MASS, held this record for some 60 years. Some have passed it but eventually either drew or were beaten. Floyd “Money” Mayweather’s 50-0 should have an * next to it defeating and MMA fighter Conor McGregor with no professional fights in his 50th fight. One fight after that against another MMA fighter was rightfully ruled an exhibition fight.
Some like Larry “Easton Assassin” Holmes, losing to Michael Spinks, Lee Sala, losing to Tony DeMicco, both of USA, Tasana Salapat, of Thailand, losing to Takuma Inoue, were 48-0 before losing. Denmark’s “Super” Brian Nielsen was 49-0 losing to Dickie Ryan. Paul “The Pittsburgh Kid” Spadafora, was 48-0-1, of the US and Chris John, was 48-0-3, of Indonesia, when they lost a week apart. Mexico’s Ricardo “Finito” Lopez ended his career, 51-0-1. He was 47-0 when he drew with Rosendo “El Bufalo” Alvarez and beat him by split decision in their rematch.
Nino LaRocca, who was born in Mauratania moved to Italy, was 56-0 when he lost to Gillies Elbilia of France. Luis Ramon “Yuri Boy” Campas, was 56-0, losing to Felix “Tito” Trinidad. Mexico’s Julio Cesar “J.C.” Chavez, was 87-0 before getting a draw with “Pernell “Sweet Pea” Whitaker, and 89-0-1, losing to Frankie “The Surgeon” Randall. Willie “”Wil o’ the Wisp, “Pep, was 62-0, when he lost to Sammy Angott.
Currently Thailand’s Chayaphon Moonsri, is 54-0, scheduled to fight for the first time out of Thailand, in the US before event was cancelled due to virus.