| Niederlage | 30-17-1 | Lyoto Machida  | TKO (Flying Knee and Punches) |  | Bellator 222: Sonnen vs Machida | Jun 14, 2019 | 2 | 0:22 | New York City, New York, United States |
| Niederlage | 30-16-1 | Fedor Emelianenko  | TKO (punches) |  | Bellator Heavyweight World Grand Prix Tournament | Oct 13, 2018 | 1 | 4:46 | Long Island, New York, United States |
| Sieg | 30-15-1 | Quinton Jackson  | Decision (unanimous) |  | Bellator Heavyweight World Grand Prix Tournament | Jan 20, 2018 | 3 | 5:00 | Inglewood, California, United States |
| Sieg | 29-15-1 | Wanderlei Silva | Decision (unanimous) |  | Bellator 180: Sonnen vs Silva | Jun 24, 2017 | 3 | 5:00 | New York City, New York, United States |
| Niederlage | 28-15-1 | Tito Ortiz | Submission (rear-naked choke) |  | Bellator 170: Ortiz vs Sonnen | Jan 21, 2017 | 1 | 2:03 | Inglewood, California, United States |
| Niederlage | 28-14-1 | Rashad Evans | TKO (punches) |  | UFC 167: St. Pierre vs Hendricks | Nov 16, 2013 | 1 | 4:05 | Las Vegas, United States |
| Sieg | 28-13-1 | Mauricio Rua | Submission (guillotine choke) |  | UFC on Fox Sports 1 - Sonnen vs Shogun | Aug 17, 2013 | 1 | 4:47 | Boston, United States |
| Niederlage | 27-13-1 | Jon Jones | TKO (strikes) | | UFC 159: Jones vs Sonnen | Apr 27, 2013 | 1 | 4:33 | Newark, United States |
| Niederlage | 27-12-1 | Anderson Silva | TKO |  | UFC 148: Silva vs Sonnen 2 | Jul 07, 2012 | 2 | 1:55 | Las Vegas, Nevada |
| Sieg | 27-11-1 | Michael Bisping  | Decision: (unanimous) |  | UFC on Fox 2 | Jan 28, 2012 | 3 | 5:00 | Chicago, United States |
| Sieg | 26-11-1 | Brian Stann | Submission |  | UFC 136 | Oct 08, 2011 | 2 | 3:51 | Houston, United States |
| Niederlage | 25-11-1 | Anderson Silva | Submission (triangle armbar) |  | UFC 117 | Aug 07, 2010 | 5 | 3:10 | Oakland, California, U.S. |
| Sieg | 25-10-1 | Nate Marquardt | Decision (unanimous) |  | UFC 109 | Feb 06, 2010 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 24-10-1 | Yushin Okami  | Decision (unanimous) |  | UFC 104 | Oct 24, 2009 | 3 | 5:00 | Los Angeles, United States |
| Sieg | 23-10-1 | Dan Miller | Decision (unanimous) |  | UFC 98 | May 23, 2009 | 3 | 5:00 | Las Vegas, United States |
| Niederlage | 22-10-1 | Demian Maia | Submission (triangle choke) |  | UFC 95 | Feb 21, 2009 | 1 | 2:37 | London, England |
| Sieg | 22-9-1 | Paulo Filho | Decision (unanimous) |  | WEC 36 | Nov 05, 2008 | 3 | 5:00 | Hollywood, United States |
| Sieg | 21-9-1 | Bryan Baker | Decision (unanimous) |  | WEC 33 | Mar 26, 2008 | 3 | 5:00 | Las Vegas, United States |
| Niederlage | 20-9-1 | Paulo Filho | Submission (armbar) |  | WEC 31 | Dec 12, 2007 | 2 | 4:55 | Las Vegas, United States |
| Sieg | 20-8-1 | Kyacey Uscola | TKO (punches) | | SF 20: Homecoming | Oct 27, 2007 | 1 | 4:31 | Portland, United States |
| Sieg | 19-8-1 | Amar Suloev  | TKO (punches) |  | Bodog Fight: Alvarez vs. Lee | Jul 14, 2007 | 2 | 3:33 | Trenton, United States |
| Sieg | 18-8-1 | Tim McKenzie | Submission (brabo choke) | | Bodog Fight: Costa Rica Combat | Feb 18, 2007 | 1 | 0:13 | Costa Rica |
| Sieg | 17-8-1 | Alexey Oleinik | Decision (unanimous) | | BodogFight | Dec 02, 2006 | 3 | 5:00 | Vancouver, British Columbia, Canada |
| Sieg | 16-8-1 | Tim Credeur | TKO (punches) | | Bodog Fight: To the Brink of War 2006 | Aug 22, 2006 | 1 | 2:18 | Costa Rica |
| Niederlage | 15-8-1 | Jeremy Horn | Submission (armbar) | | UFC 60 | May 27, 2006 | 2 | 1:17 | Los Angeles, United States |
| Sieg | 15-7-1 | Trevor Prangley  | Decision (unanimous) | | UFC Ultimate Fight Night 4 | Apr 06, 2006 | 3 | 5:00 | Las Vegas, United States |
| Niederlage | 14-7-1 | Renato Sobral | Submission (triangle choke) | | UFC 55 | Oct 07, 2005 | 2 | 1:20 | Uncasville, Connecticut, U.S. |
| Sieg | 14-6-1 | Tim Williams | TKO (punches) | | SF 11: Rumble at the Rose Garden | Jul 09, 2005 | 1 | 3:59 | Portland, United States |
| Sieg | 13-6-1 | Adam Ryan | TKO (punches) | | Euphoria: USA vs World | Feb 26, 2005 | 1 | 3:49 | Atlantic City, United States |
| Niederlage | 12-6-1 | Terry Martin | TKO (corner stoppage) | | XFO 4: International | Dec 03, 2004 | 2 | 5:00 | McHenry, Illinois, United States |
| Sieg | 12-5-1 | Alex Stiebling | Decision (unanimous) | | WEC 12 | Oct 21, 2004 | 3 | 5:00 | Lemoore, United States |
| Niederlage | 11-5-1 | Jeremy Horn | Submission (guillotine choke) | | SF 6: Battleground in Reno | Sep 23, 2004 | 2 | 2:35 | Reno, Nevada, United States |
| Niederlage | 11-4-1 | Keiichiro Yamamiya | Decision (majority) | | Pancrase: 2004 Neo-Blood Tournament Final | Jul 25, 2004 | 3 | 5:00 | Tokyo, Japan |
| Niederlage | 11-3-1 | Jeremy Horn | TKO (cut) | | Extreme Challenge 57 | May 06, 2004 | 1 | 3:34 | Council Bluffs, United States |
| Sieg | 11-2-1 | Justin Bailey | KO (flying knee) | | Rage on the River | Apr 17, 2004 | 1 | 0:40 | Redding, United States |
| Sieg | 10-2-1 | Arman Gambaryan | Decision (unanimous) | | Euphoria: Russia vs USA | Mar 13, 2004 | 3 | 5:00 | Atlantic City, United States |
| Sieg | 9-2-1 | Homer Moore | Decision (unanimous) | | ROTR 4.5: Proving Grounds | Dec 27, 2003 | 2 | 5:00 | Hilo, Hawaii, United States |
| Sieg | 8-2-1 | Greg Curnut | Submission (punches) | | FCFF: Rumble at the Roseland 10 | Dec 13, 2003 | 1 | 1:07 | Portland, United States |
| Sieg | 7-2-1 | Jason Lambert | Decision (unanimous) | | Gladiator Challenge 20 | Nov 13, 2003 | 3 | 5:00 | Colusa, United States |
| Niederlage | 6-2-1 | Forrest Griffin | Submission (triangle choke) | | IFC: Global Domination | Sep 06, 2003 | 1 | 2:25 | Denver, United States |
| Unentschieden | 6-1-1 | Akihiro Gono | Draw | | Pancrase: Hybrid 2 February 16, 2003 | Feb 16, 2003 | 2 | 5:00 | Osaka, Japan |
| Niederlage | 6-1 | Trevor Prangley | Technical Submission | | XFA 5: Redemption | Jan 25, 2003 | 1 | 2:49 | Florida, United States |
| Sieg | 6-0 | Justin Hawes | TKO (punches) | | UFCF: Rumble in Rochester | Aug 24, 2002 | 2 | 4:26 | Rochester, United States |
| Sieg | 5-0 | Jesse Ault | Decision (unanimous) | | Real Fighting Championships 1: The Beginning | Jul 13, 2002 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 4-0 | Jesse Ault | Decision (unanimous) | | Dangerzone 13: Caged Heat | Apr 13, 2002 | 2 | 5:00 | New Town, United States |
| Sieg | 3-0 | Scott Shipman | Submission (forearm choke) | | Dangerzone 13: Caged Heat | Apr 13, 2002 | 2 | 2:08 | New Town, United States |
| Sieg | 2-0 | Jason Miller | Decision (unanimous) | | HFP 1: Rumble on The Reservation | Mar 30, 2002 | 2 | 5:00 | Anza, California, United States |
| Sieg | 1-0 | Ben Hailey | Decision (unanimous) | | Battle of Fort Vancouver | May 10, 1997 | 1 | N/A | Vancouver, United States |
