| Sieg | 29-0 | Justin Gaethje  | Technical Submission (Triangle Choke) |  | UFC 254: Khabib vs Gaethje | Oct 24, 2020 | 2 | 1:34 | Abu Dhabi, Dubai, United Arab Emirates  |
| Cancelled Bout | | Justin Gaethje | - |  | UFC 253: Nurmagomedov vs Gaethje | Sep 19, 2020 | - | - | Las Vegas, Nevada, United States |
| Cancelled Bout | | Tony Ferguson | - |  | UFC 249 | Apr 18, 2020 | - | - | Brooklyn, New York, United States |
| Sieg | 28-0 | Dustin Poirier | Submission (Rear-Naked Choke) |  | UFC 242: Khabib vs Poirier | Sep 07, 2019 | 3 | 2:06 | Abu Dhabi, Dubai, United Arab Emirates |
| Sieg | 27-0 | Conor McGregor  | Submission (Neck Crank) |  | UFC 229: Khabib vs McGregor | Oct 06, 2018 | 4 | 3:03 | Las Vegas, Nevada, United States |
| Sieg | 26-0 | Al Iaquinta | Decision (unanimous) |  | UFC 223: Nurmagomedov vs Iaquinta | Apr 07, 2018 | 5 | 5:00 | Brooklyn, New York, United States |
| Sieg | 25-0 | Edson Barboza  | Decision (Unanimous) |  | UFC 219: Cyborg vs Holm | Dec 30, 2017 | 3 | 5:00 | Las Vegas, Nevada, United States |
| Cancelled Bout | | Tony Ferguson | - |  | UFC 209: Woodley vs. Thompson 2 | Mar 04, 2017 | - | - | Las Vegas, Nevada, United States |
| Sieg | 24-0 | Michael Johnson | Submission (kimura) |  | UFC 205: Alvarez vs McGregor | Nov 12, 2016 | 3 | 2:31 | New York, New York, United States |
| Cancelled Bout | | Tony Ferguson | - |  | UFC on FOX 19 | Apr 16, 2016 | - | - | Tampa, Florida, United States |
| Sieg | 23-0 | Darrell Horcher | TKO (punches) |  | UFC on FOX 19: Teixeira vs Evans | Apr 16, 2016 | 2 | 3:38 | Tampa, United States |
| Cancelled Bout | | Tony Ferguson | - |  | TUF 22 Finale | Dec 11, 2015 | - | - | Las Vegas, United States |
| Cancelled Bout | | Donald Cerrone | - |  | UFC 187 | May 23, 2015 | - | - | Las Vegas, United States |
| Cancelled Bout | | Donald Cerrone | - |  | UFC 178 | Sep 27, 2014 | - | - | Las Vegas, United States |
| Sieg | 22-0 | Rafael dos Anjos | Decision (unanimous) |  | UFC on Fox 11: Werdum vs Browne | Apr 19, 2014 | 3 | 5:00 | Orlando, United States |
| Cancelled Bout | | Gilbert Melendez | - |  | UFC 170 | Feb 22, 2014 | - | - | Las Vegas, United States |
| Sieg | 21-0 | Pat Healy | Decision (unanimous) |  | UFC 165: Jones vs Gustafsson | Sep 21, 2013 | 3 | 5:00 | Toronto, Ontario, Canada |
| Sieg | 20-0 | Abel Trujillo | Decision (unanimous) |  | UFC 160: Velasquez vs Silva 2 | May 25, 2013 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 19-0 | Thiago Tavares | KO (punches & elbows) |  | UFC on FX: Belfort vs. Bisping | Jan 19, 2013 | 1 | 1:55 | São Paulo, Brazil |
| Sieg | 18-0 | Gleison Tibau | Decision (unanimous) |  | UFC 148 | Jul 07, 2012 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 17-0 | Kamal Shalorus | Submission (rear naked choke) |  | UFC on FX: Guillard vs. Miller | Jan 20, 2012 | 3 | 2:08 | Nashville, United States |
| Sieg | 16-0 | Arymarcel Santos | TKO (punches) |  | ProFC 36: Battle on the Caucas | Oct 22, 2011 | 1 | 3:33 | Khasavyurt, Russia |
| Sieg | 15-0 | Vadim Sandulitsky | Submission (triangle choke) | | ProFC / GM Fight: Ukraine Cup 3 | Sep 15, 2011 | 1 | 3:01 | Odessa, Odessa Oblast, Ukraine |
| Sieg | 14-0 | Khamiz Mamedov | Submission (triangle choke) |  | ProFC 30: Battle on Don | Aug 05, 2011 | 1 | 3:15 | Rostov-on-Don, Russia |
| Sieg | 13-0 | Kadzhik Abadzhyan | Submission (triangle choke) |  | ProFC: Union Nation Cup Final | Jul 02, 2011 | 1 | 4:28 | Rostov-on-Don, Russia |
| Sieg | 12-0 | Ashot Shahinyan | KO (punches) | | ProFC: Union Nation Cup 15 | May 05, 2011 | 1 | 2:18 | Rostov-on-Don, Russia |
| Sieg | 11-0 | Said Khalilov  | Submission (kimura) |  | ProFC: Union Nation Cup 14 | Apr 09, 2011 | 1 | 3:16 | Rostov-on-Don, Russia |
| Sieg | 10-0 | Alexander Agafonov | TKO (corner stoppage) |  | M-1 Selection Ukraine 2010: The Finals | Feb 17, 2011 | 2 | 5:00 | Kiev, Kiev Oblast, Ukraine |
| Sieg | 9-0 | Vitaliy Ostrovskiy | TKO (punches) |  | M-1 Selection Ukraine 2010: Clash of the Titans | Sep 18, 2010 | 1 | 4:06 | Kiev, Kiev Oblast, Ukraine |
| Sieg | 8-0 | Oleg Bagov | Decision (unanimous) |  | Golden Fist Russia | Jun 10, 2010 | 2 | 5:00 | Moscow, Moscow Oblast, Russia |
| Sieg | 7-0 | Shahbulat Shamhalaev | Submission (armbar) |  | M-1 Challenge 2009: Selections 9 | Nov 03, 2009 | 1 | 4:36 | St. Petersburg, Russia |
| Sieg | 6-0 | Eldar Eldarov | TKO (punches) | | Tsumada Fighting Championship 3 | Aug 08, 2009 | 2 | 2:44 | Agvali, Russia |
| Sieg | 5-0 | Said Akhmed | TKO (punches) | | Tsumada Fighting Championship 3 | Aug 08, 2009 | 1 | 2:05 | Agvali, Russia |
| Sieg | 4-0 | Ramazan Kurbanismailov | Decision (unanimous) | | Pankration Atrium Cup | Oct 11, 2008 | 2 | 5:00 | Moscow, Moscow Oblast, Russia |
| Sieg | 3-0 | Shamil Abdulkerimov | Decision (unanimous) | | Pankration Atrium Cup | Oct 11, 2008 | 2 | 5:00 | Moscow, Moscow Oblast, Russia |
| Sieg | 2-0 | Magomed Magamedov | Decision (unanimous) | | Pankration Atrium Cup | Oct 11, 2008 | 2 | 5:00 | Moscow, Moscow Oblast, Russia |
| Sieg | 1-0 | Vusal Bayramov | Submission (rear naked choke) | | CSFU: Champions League | Sep 13, 2008 | 1 | 2:20 | Poltava, Ukraine |
