Ray ”Boom Boom” Mancini once asked me, “who stopped Aaron “Hawk” Pryor’s unbeaten streak?” He gave me a name, and I said, “That’s not it!” I called a friend to check Boxrec, and he said it was Bobby Joe Young, 29-6-1 when Pryor was 36-0 and returning after 29 months into retirement.
Gold Medalist and Heavyweight champ Michael “Jinx” Spinks was 31-0 when “Iron” Mike Tyson stopped him.
WBO World Light Heavyweight champion Dariusz “Tiger” Michalczewski was 48-0 when he lost to Jose Cesar Gonzalez, 34-1.
Welterweight champion “Sugar” Ray Robinson was 40-0 when he lost to Jake “Bronx Bull” LaMotta.
Heavyweight champion Joe “The Brown Bomber” Louis was 24-0 when he lost to Max Schmeling, 48-7-4.
Multi-division world champion Julio “J.C.” Cesar Chavez was 89-0-1 when he lost to Frankie “The Surgeon” Randall, 49-2-1.
Heavyweight champion Larry “The Easton Assassin” was 48-0 when he lost to Light Heavyweight champion Michael “Jinx” Spinks, 28-0.
Heavyweight “Super” Brian Nielson was 49-0 when he lost to Dicky Ryan, 47-4.
Bantamweight champion Eder Jofre was 47-0-3 when he lost to Fighting Harada, 38-3.
Heavyweight champion “Smokin” Joe Frazier was 29-0 when he lost to “Big” George Foreman, who was 37-0. Foreman was 40-0 when he lost to Muhammad Ali.
Heavyweight champion Muhammad “The Greatest” Ali was 31-0 when he lost to “Smokin” Joe Frazier, 26-0.
Heavyweight champion James “The Boilermaker” Jeffries was 19-0-2 when he lost to Jack “Galveston Giant” Johnson, 50-5-9.
Heavyweight Lamar Clark was 42-0 when he lost to Bartolo Soni, 12-2-1.
Felix “Tito” Trinidad was 40-0 when he lost to Bernard “Executioner” Hopkins.
Flyweight champion Pascual Perez was 51-0-1 when he lost to Sadao Yaoita, 27-6-2.
Featherweight champion Willie Pep was 62-0 when he lost to Sammy Angott, 69-17-5.
Welterweight champion “Sugar” Ray Leonard was 27-0 when he lost to Roberto “Hands of Stone” Duran, 71-1.
Duran was 31-0 when he lost to Estaban De Jesus, 32-1.
Welterweight champion Thomas “Hit Man” Hearns was 32-0 when he lost to “Sugar” Ray Leonard, 27-1.
Super Middleweight champion James “Lights Out” Toney was 44-0-2, when he lost to Roy Jones, Jr., 26-0.
Light Heavyweight champion Roy Jones, Jr. was 34-0 when he lost to Montell Griffin, 26-0.
Featherweight champion “Prince” Naseem Hamed was 35-0 when he lost to Marco Antonio Barrera, 52-3.
“Iron” Mike Tyson was 37-0 when he lost to James “Buster” Douglas, 28-4-1.
The American Light Heavyweight champion Gene “Fighting Marine” Tunney was 47-0-2 when he lost to Harry “Pittsburgh Windmill” Greb, 196-11-16.
There you have it. Any more come to find?
