/
| Champion | Won | Lost | Days |
|---|---|---|---|
| William Zepeda | 1 Aug 2026 | Current | 80 |
| Shakur Stevenson | 16 Nov 2023 | 4 Feb 2026 | 811 |
| Devin Haney | 22 Apr 2020 | 1 Aug 2023 | 1,196 |
| Dejan Zlatičanin | 11 Jun 2016 | 28 Jan 2017 | 231 |
| Jorge Linares | 30 Dec 2014 | 22 Feb 2016 | 419 |
| Adrien Broner | 17 Nov 2012 | 29 Jan 2014 | 438 |
| Antonio DeMarco | 15 Oct 2011 | 17 Nov 2012 | 399 |
| Humberto Soto | 13 Mar 2010 | 1 Jul 2011 | 475 |
| Edwin Valero | 4 Apr 2009 | 9 Feb 2010 | 311 |
| Manny Pacquiao | 28 Jun 2008 | 24 Feb 2009 | 241 |
| David Díaz | 22 Feb 2007 | 28 Jun 2008 | 492 |
| Joel Casamayor | 7 Oct 2006 | 22 Feb 2007 | 138 |
| Diego Corrales | 7 May 2005 | 6 Oct 2006 | 517 |
| Juan Lazcano | 5 Jun 2004 | 7 May 2005 | 336 |
| José Luis Castillo | 17 Jun 2000 | 20 Apr 2002 | 672 |
| Stevie Johnston | 27 Feb 1999 | 17 Jun 2000 | 476 |
| César Bazán | 13 Jun 1998 | 27 Feb 1999 | 259 |
| Stevie Johnston | 1 Mar 1997 | 13 Jun 1998 | 469 |
| Jean Baptiste Mendy | 20 Apr 1996 | 1 Mar 1997 | 315 |
| Miguel Ángel González | 24 Aug 1992 | 29 Feb 1996 | 1,284 |
| Pernell Whitaker | 20 Aug 1989 | 13 Apr 1992 | 967 |
| Julio César Chávez | 29 Oct 1988 | 25 Jun 1989 | 239 |
| José Luis Ramírez | 19 Jul 1987 | 29 Oct 1988 | 468 |
| Héctor Camacho | 10 Aug 1985 | 29 Apr 1987 | 627 |
| José Luis Ramírez | 3 Nov 1984 | 29 Apr 1987 | 907 |
| Edwin Rosario | 1 May 1983 | 3 Nov 1984 | 552 |
| Alexis Argüello | 20 Jun 1981 | 15 Feb 1983 | 605 |
| Jim Watt | 17 Apr 1979 | 20 Jun 1981 | 795 |
| Roberto Durán | 21 Jan 1978 | 7 Feb 1979 | 382 |
| Esteban de Jesús | 8 May 1976 | 21 Jan 1978 | 623 |
| Guts Ishimatsu | 11 Apr 1974 | 8 May 1976 | 758 |
| Pedro Carrasco | 5 Nov 1971 | 18 Feb 1972 | 105 |
| Mando Ramos | 18 Feb 1969 | 3 Mar 1970 | 378 |
| Carlos Cruz | 29 Jun 1968 | 18 Feb 1969 | 234 |
| Sugar Ramos | 1 Jul 1967 | 29 Jun 1968 | 364 |
| Carlos Ortíz | 13 Nov 1965 | 25 Oct 1966 | 346 |
| Carlos Ortíz | 7 Apr 1963 | 10 Apr 1965 | 734 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.