- Professional Combat Sport Championship Histories -
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| National Boxing Association | ( | 1921-01 | - | 1960-08 | ) |
| World Boxing Association | ( | 1960-08 | - | ) |
* Bolded letters in the competitor's name, if any, indicate the surname/family name.
| Benny Leonard | 1921-01 | |
| Has won the world title from Freddie Welsh on 17-05-28 in New York, NY, USA; recognized as the world and American champion by NBA in 21-01 upon its inception (The Decatur Herald, Decatur, IL, 21-02-07, plus several other papers); vacates on 25-01-15 upon (temporary) retirement. | ||
| Jimmy Goodrich | 1925-07-13 | Long Island City, NY, USA |
| Defeats Stanislaus Loayza. | ||
| Rocky Kansas | 1925-12-07 | Buffalo, NY, USA |
| Sammy Mandell | 1926-07-03 | Chicago, IL, USA |
| Al Singer | 1930-07-17 | New York, NY, USA |
| Tony Canzoneri | 1930-11-14 | New York, NY, USA |
| Also wins the junior welterweight title on 31-04-24 but loses it on 32-01-18. | ||
| Barney Ross | 1933-06-23 | Chicago, IL, USA |
| Vacates on 35-04-15. | ||
| Tony Canzoneri [2] | 1935-05-10 | New York, NY, USA |
| Defeats Lou Ambers. | ||
| Lou Ambers | 1936-09-03 | New York, NY, USA |
| Henry Armstrong | 1938-08-17 | New York, NY, USA |
| Lou Ambers [2] | 1939-08-22 | New York, NY, USA |
| Stripped of the title on 40-03-25 when Ambers fails to defend the title within 6 months and refuses to fight the top contender Davey Day. | ||
| Sammy Angott | 1940-05-03 | Louisville, KY, USA |
| Defeats Davey Day; temporarily retires on 42-11-13 due to the broken hand; comes out of retirement 5 months later. | ||
| Sammy Angott [2] | 1943-10-27 | Hollywood, CA, USA |
| Defeats Slugger White. | ||
| Juan Zurita | 1944-03-08 | Hollywood, CA, USA |
| Ike Williams | 1945-04-18 | Mexico City, DF, MEX |
| Jimmy Carter | 1951-05-25 | New York, NY, USA |
| Lauro Salas | 1952-05-14 | Los Angeles, CA, USA |
| Jimmy Carter [2] | 1952-10-15 | Chicago, IL, USA |
| Paddy DeMarco | 1954-03-05 | New York, NY, USA |
| Jimmy Carter [3] | 1954-11-17 | San Francisco, CA, USA |
| Wallace Smith | 1955-06-29 | Boston, MA, USA |
| Joe Brown | 1956-08-24 | New Orleans, LA, USA |
| Carlos Ortiz | 1962-04-21 | Las Vegas, NV, USA |
| NBA becomes WBA on 62-08-23. | ||
| Ismael Laguna | 1965-04-10 | Panama City, PAN |
| Carlos Ortiz [2] | 1965-11-13 | San Juan, PR, USA |
| Carlos Cruz | 1968-06-29 | Santo Domingo, DOM |
| Mando Ramos | 1969-02-18 | Los Angeles, CA, USA |
| Ismael Laguna [2] | 1970-03-03 | Los Angeles, CA, USA |
| Ken Buchanan | 1970-09-26 | San Juan, PR, USA |
| Roberto Duran | 1972-06-26 | New York, NY, USA |
| Vacates on 79-02-03 to move up to the welterweight class. | ||
| Ernesto España | 1979-06-16 | San Juan, PR, USA |
| Defeats Claude Noel. | ||
| Hilmer Kenty | 1980-03-02 | Detroit, MI, USA |
| Sean O'Grady | 1981-04-12 | Atlantic City, NJ, USA |
| Stripped of the title in 81 for not defending it. | ||
| Claude Noel | 1981-09-12 | Atlantic City, NJ, USA |
| Defeats Rodolfo González. | ||
| Arturo Frias | 1981-12-05 | Las Vegas, NV, USA |
| Ray Mancini | 1982-05-08 | Paradise, NV, USA |
| Livingstone Bramble | 1984-06-01 | Buffalo, NY, USA |
| Edwin Rosario | 1986-09-26 | Miami Beach, FL, USA |
| Julio César Chávez | 1987-11-21 | Las Vegas, NV, USA |
| Vacates on 88-10-29 to move up to the super lightweight class. | ||
| Edwin Rosario [2] | 1989-07-09 | Atlantic City, NJ, USA |
| Defeats Anthony Jones. | ||
| Juan Nazario | 1990-04-04 | New York, NY, USA |
| Pernell Whitaker | 1990-08-11 | Stateline, NV, USA |
| Vacates on 92-05-22 to move up to the super lightweight class. | ||
| Joey Gamache | 1992-06-13 | Portland, ME, USA |
| Defeats JUN Chil-Sung. | ||
| Tony Lopez | 1992-10-24 | Portland, ME, USA |
| Dingaan Thobela | 1993-06-26 | Sun City, RSA |
| Orzubek Nazarov | 1993-10-30 | Johannesburg, RSA |
| Jean Baptiste Mendy | 1998-05-16 | Paris, FRA |
| Julien Lorcy | 1999-04-10 | Paris, FRA |
| Stefano Zoff | 1999-08-07 | Le Cannet, FRA |
| Gilberto Serrano | 1999-11-13 | Las Vegas, NV, USA |
| Hatakeyama Takanori | 2000-06-11 | Tōkyō, JPN |
| Julien Lorcy [2] | 2001-07-01 | Saitama, JPN |
| Raul Horacio Balbi | 2001-10-18 | Paris, FRA |
| Leonard Doroftei | 2002-01-05 | San Antonio, TX, USA |
| Stripped of the title on 03-10-24 when Doroftei is overweight for his title match against Miguel Callist. | ||
| Lakva Sim | 2004-04-10 | Las Vegas, NV, USA |
| Defeats Miguel Callist. | ||
| Juan Díaz | 2004-07-17 | Houston, TX, USA |
| Promoted the "Super" champion on 07-02-23; also wins WBO World Title on 07-04-28 and IBF World Title on 07-10-13; José Alfaro wins WBA "Regular" world title on 07-12-29. | ||
| Nate Campbell | 2008-03-08 | Cancun, QI, MEX |
| Wins WBA, IBF, and WBO titles; vacates on 09-01-10 because of concerns regarding sanctioning fees and proposed mandatory defenses. | ||
| Juan Manuel Márquez | 2009-02-28 | Houston, TX, USA |
| Defeats IBO champion Juan Diaz and win the vacant WBA and WBO titles; vacates on 12-01-08 to move up to the welterweight class. | ||
| Vasyl Lomachenko | 2018-05-12 | New York, NY, USA |
| Defeats Jorge Linares, who has vacated WBA (regular) title for the match; WBO World Title on 18-12-08 and WBC World Title on 19-08-31; named WBC Franchise champion on 19-10-23. | ||
| Teofimo Lopez | 2020-10-17 | Las Vegas, NV, USA |
| IBF world champion, wins WBA, WBO, and WBC Franchise world titles. | ||
| George Kambosos Jr. | 2021-11-27 | New York, NY, USA |
| Wins WBA, IBF, and WBO world titles. | ||
| Davin Haney | 2022-06-05 | Melbourne, VIC, AUS |
| Wins WBA, IBF, and WBO world titles; also holds WBC World Title; vacates on 23-11-29 upon moving up to the super lightweight class. | ||
| Gervonta Davis | 2023-11-29 | |
| "Regular" world champion, becomes the primary champion after Haney vacates the Super World Title. | ||
