/
| Champion | Won | Lost | Days |
|---|---|---|---|
| Osleys Iglesias | 9 Apr 2026 | Current | 195 |
| William Scull | 19 Oct 2024 | 3 May 2025 | 196 |
| Canelo Álvarez | 6 Nov 2021 | 26 Jul 2024 | 993 |
| Caleb Plant | 13 Jan 2019 | 6 Nov 2021 | 1,028 |
| José Uzcátegui | 4 Jul 2018 | 13 Jan 2019 | 193 |
| Caleb Truax | 9 Dec 2017 | 7 Apr 2018 | 119 |
| James DeGale | 23 May 2015 | 9 Dec 2017 | 931 |
| Carl Froch | 26 May 2012 | 3 Feb 2015 | 983 |
| Lucian Bute | 19 Oct 2007 | 26 May 2012 | 1,681 |
| Jeff Lacy | 2 Oct 2004 | 4 Mar 2006 | 518 |
| Sven Ottke | 24 Oct 1998 | 27 Mar 2004 | 1,981 |
| Charles Brewer | 21 Jun 1997 | 24 Oct 1998 | 490 |
| Roy Jones Jr. | 18 Nov 1994 | 20 Feb 1997 | 825 |
| James Toney | 13 Feb 1993 | 18 Nov 1994 | 643 |
| Iran Barkley | 10 Jan 1992 | 13 Feb 1993 | 400 |
| Darrin Van Horn | 18 May 1991 | 10 Jan 1992 | 237 |
| Lindell Holmes | 27 Jan 1990 | 18 May 1991 | 476 |
| Graciano Rocchigiani | 11 Mar 1988 | 22 Sept 1989 | 560 |
| Park Chong-pal | 22 Jul 1984 | 2 Feb 1988 | 1,290 |
Built from title bouts on record. Vacated or stripped titles are not visible in bout results, so very recent changes can lag.