/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Abdullah Mason | 22 Nov 2025 | Current | 333 |
| Denys Berinchyk | 18 May 2024 | 14 Feb 2025 | 272 |
| Devin Haney | 5 Jun 2022 | 29 Nov 2023 | 542 |
| George Kambosos Jr. | 27 Nov 2021 | 5 Jun 2022 | 190 |
| Teófimo López | 17 Oct 2020 | 27 Nov 2021 | 406 |
| Terry Flanagan | 11 Jul 2015 | 26 Oct 2017 | 838 |
| Terence Crawford | 1 Mar 2014 | 5 Mar 2015 | 369 |
| Ricky Burns | 26 Jan 2012 | 1 Mar 2014 | 765 |
| Nate Campbell | 8 Mar 2008 | 13 Feb 2009 | 342 |
| Juan Díaz | 28 Apr 2007 | 8 Mar 2008 | 315 |
| Zahir Raheem | 29 Apr 2006 | 28 Apr 2007 | 364 |
| Diego Corrales | 7 Aug 2004 | 14 Jan 2006 | 525 |
| Artur Grigorian | 13 Apr 1996 | 3 Jan 2004 | 2,821 |
| Oscar De La Hoya | 29 Jul 1994 | 9 Feb 1996 | 560 |
| Giovanni Parisi | 25 Sept 1992 | 23 Jan 1994 | 485 |
| Dingaan Thobela | 22 Sept 1990 | 14 Jun 1992 | 631 |
| Mauricio Aceves | 6 May 1989 | 22 Sept 1990 | 504 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.
