| Niederlage | 31-8 (1) | Renan Ferreira  | TKO (Punches) |  | PFL vs Bellator: CHAMPS | Feb 24, 2024 | 1 | 0:21 | Riyadh, Saudi Arabia  |
| Cancelled Bout | | Linton Vassell  | - |  | Bellator 300: Bader vs Vassell 2 | Oct 07, 2023 | - | - | San Diego, California, United States  |
| Sieg | 31-7 (1) | Fedor Emelianenko  | TKO (Punches) |  | Bellator 290: Bader vs Fedor 2 | Feb 04, 2023 | 1 | 2:30 | Inglewood, California, United States |
| Sieg | 30-7 (1) | Cheick Kongo  | Decision (Unanimous) |  | Bellator 280: Bader vs Kongo 2 | May 06, 2022 | 5 | 5:00 | Paris, France |
| Sieg | 29-7 (1) | Valentin Moldavsky | Decision (Unanimous) |  | Bellator 273: Bader vs Moldavsky | Jan 29, 2022 | 5 | 5:00 | Phoenix, Arizona, United States |
| Niederlage | 28-7 (1) | Corey Anderson | TKO (punches) |  | Bellator Light Heavyweight World Grand Prix Tournament | Oct 16, 2021 | 1 | 0:51 | Phoenix, Arizona, United States |
| Sieg | 28-6 (1) | Lyoto Machida | Decision (Unanimous) |  | Bellator Light Heavyweight World Grand Prix Tournament | Apr 09, 2021 | 5 | 5:00 | Uncasville, Connecticut, United States |
| Niederlage | 27-6 (1) | Vadim Nemkov | TKO (head kick and punches) |  | Bellator 244: Bader vs Nemkov | Aug 21, 2020 | 2 | 3:02 | Uncasville, Connecticut, United States |
| Cancelled Bout | | Vadim Nemkov | - |  | Bellator 242: Bader vs Nemkov | May 09, 2020 | - | - | San Jose, California, United States |
| NC | 27-5 (1) | Cheick Kongo | No Contest (accidental eye poke) |  | Bellator 226: Bader vs Kongo | Sep 07, 2019 | 1 | 3:52 | San Jose, California, United States |
| Sieg | 27-5 | Fedor Emelianenko | TKO (Punches) |  | Bellator Heavyweight World Grand Prix Tournament | Jan 26, 2019 | 1 | 0:35 | Los Angeles, California, United States |
| Sieg | 26-5 | Matt Mitrione | Decision (unanimous) |  | Bellator Heavyweight World Grand Prix Tournament | Oct 12, 2018 | 3 | 5:00 | Uncasville, Connecticut, United States |
| Sieg | 25-5 | Muhammed Lawal | KO (punches) |  | Bellator Heavyweight World Grand Prix Tournament | May 12, 2018 | 1 | 0:15 | San Jose, California, United States |
| Sieg | 24-5 | Linton Vassell | TKO (punches) |  | Bellator 186: Bader vs Vassell | Nov 03, 2017 | 2 | 3:58 | University Park, Pennsylvania, United States |
| Sieg | 23-5 | Phil Davis | Decision (split) |  | Bellator 180: Sonnen vs Silva | Jun 24, 2017 | 5 | 5:00 | New York City, New York, United States |
| Sieg | 22-5 | Antonio Rogério Nogueira | TKO (punches) |  | UFC Fight Night 100: Bader vs Nogueira 2 | Nov 19, 2016 | 3 | 3:51 | Sao Paulo, Brazil |
| Sieg | 21-5 | Ilir Latifi  | KO (knee) |  | UFC Fight Night 93: Arlovski vs Barnett | Sep 03, 2016 | 2 | 2:06 | Hamburg, Germany |
| Niederlage | 20-5 | Anthony Johnson | KO (punches) |  | UFC on FOX 18: Johnson vs Bader | Jan 30, 2016 | 1 | 1:26 | Newark, United States |
| Sieg | 20-4 | Rashad Evans | Decision (unanimous) |  | UFC 192:Cormier vs Gustafsson | Oct 03, 2015 | 3 | 5:00 | Houston, Texas, United States |
| Sieg | 19-4 | Phil Davis | Decision (split) |  | UFC on Fox: Gustafsson vs Johnson | Jan 24, 2015 | 3 | 5:00 | Stockholm, Sweden |
| Sieg | 18-4 | Ovince Saint Preux | Decision (unanimous) |  | UFC Fight Night: Bader vs St.Preux | Aug 16, 2014 | 5 | 5:00 | Bangor, Maine, United States |
| Sieg | 17-4 | Rafael Cavalcante | Decision (unanimous) |  | UFC 174 | Jun 14, 2014 | 3 | 5:00 | Vancouver, Canada |
| Sieg | 16-4 | Anthony Perosh | Decision (unanimous) | | UFC Fight Night 33 - Hunt vs Bigfoot | Dec 07, 2013 | 3 | 5:00 | Brisbane, Australia |
| Niederlage | 15-4 | Glover Teixeira | TKO (punches) | | UFC on Fox Sports 1 - Teixeira vs Bader | Sep 04, 2013 | 1 | 2:55 | Belo Horizonte, Brazil |
| Sieg | 15-3 | Vladimir Matyushenko  | Submission (guillotine choke) | | UFC on Fox 6: Johnson vs Dodson | Jan 26, 2013 | 1 | 0:50 | Chicago, United States |
| Niederlage | 14-3 | Lyoto Machida | KO (punch) |  | UFC on Fox: Shogun vs Vera | Aug 04, 2012 | 2 | 1:32 | Los Angeles, United States |
| Sieg | 14-2 | Quinton Jackson | Decision (unanimous) | | UFC 144 | Feb 26, 2012 | 3 | 5:00 | Saitama, Japan |
| Sieg | 13-2 | Jason Brilz | KO (punch) | | UFC 139 | Nov 19, 2011 | 1 | 1:17 | San Jose, United States |
| Niederlage | 12-2 | Tito Ortiz | Submission (guillotine choke) | | UFC 132 | Jul 02, 2011 | 1 | 1:56 | Las Vegas, United States |
| Niederlage | 12-1 | Jon Jones | Submission | | UFC 126 | Feb 05, 2011 | 2 | 4:20 | Las Vegas, United States |
| Sieg | 12-0 | Antonio Rogério Nogueira | Decision (unanimous) |  | UFC 119 | Sep 25, 2010 | 3 | 5:00 | Indianapolis, United States |
| Sieg | 11-0 | Keith Jardine | KO (punch) |  | UFC 110 | Feb 21, 2010 | 3 | 2:10 | Acer Arena, Sydney, Australia |
| Sieg | 10-0 | Eric Schafer | Decision (unanimous) | | UFC 104 | Oct 24, 2009 | 3 | 5:00 | Los Angeles, United States |
| Sieg | 9-0 | Carmelo Marrero | Decision (unanimous) | | UFC Fight Night: Condit vs. Kampmann | Apr 01, 2009 | 3 | 5:00 | Nashville, United States |
| Sieg | 8-0 | Vinny Magalhaes | TKO (strikes) | | Team Nogueira vs Team Mir Finale | Dec 13, 2008 | 1 | 2:18 | Las Vegas, United States |
| Sieg | 7-0 | Buckley Acosta | Submission (arm-triangle choke) | | XCC 6: Western Threat | Apr 05, 2008 | 1 | 0:47 | Reno, Nevada, United States |
| Sieg | 6-0 | Brad Peterson | Decision (unanimous) | | IFO: Fireworks in the Cage IV | Dec 28, 2007 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 5-0 | Ulises Cortez | KO | | SE: Vale Tudo | Oct 27, 2007 | 1 | N/A | Mexico |
| Sieg | 4-0 | Dicky Chavez | TKO | | KOTC: Unstoppable | Sep 15, 2007 | 1 | 0:41 | San Carlos, United States |
| Sieg | 3-0 | Tim Peacock | TKO | | Rage in the Cage 94 | Jun 09, 2007 | 2 | 2:50 | Camp Verde, United States |
| Sieg | 2-0 | David Baggett | Submission (choke) | | Proving Grounds 1 | May 12, 2007 | 1 | N/A | Cayman Islands |
| Sieg | 1-0 | Dave Covello | Submission (strikes) | | WFC: Desert Storm | Mar 31, 2007 | 1 | 2:21 | Camp Verde, United States |
