| Niederlage | 21-9 | Jim Wallhead  | Decision (split) |  | BAMMA 7: Trigg vs. Wallhead | Sep 10, 2011 | 3 | 5:00 | Birmingham, London |
| Sieg | 21-8 | John Phillips | TKO (Punches) |  | BAMMA 6: Watson vs. Rua | May 21, 2011 | 1 | 2:41 | London, England |
| Sieg | 20-8 | Roy Neeman | TKO (Punches) |  | Israel FC: Genesis | Nov 09, 2010 | 1 | 2:36 | Tel Aviv, Israel |
| Niederlage | 19-8 | Matt Serra  | KO (punches) |  | UFC 109 | Feb 06, 2010 | 1 | 2:23 | Las Vegas, Nevada, United States |
| Niederlage | 19-7 | Josh Koscheck | KO (punches) |  | UFC 103 | Sep 19, 2009 | 1 | 1:25 | Dallas, Texas, United States |
| Sieg | 19-6 | Danny Babcock | Decision (unanimous) | | XCF: Rumble in Racetown 1 | Feb 14, 2009 | 3 | 5:00 | Florida, United States |
| Sieg | 18-6 | Falaniko Vitale | Decision (unanimous) | | Strikeforce: Payback | Oct 03, 2008 | 3 | 5:00 | Colorado, United States |
| Sieg | 17-6 | Makoto Takimoto | Decision (unanimous) | | World Victory Road Presents: Sengoku 4 | Sep 24, 2008 | 3 | 5:00 | Saitama, Japan |
| Sieg | 16-6 | Edwin Dewees | Submission (kimura) | | HDNet Fights: Reckless Abandon | Dec 15, 2007 | 1 | 1:40 | Texas, United States |
| Niederlage | 15-6 | Robbie Lawler | KO (punches) | | ICON Sport: Epic | Mar 31, 2007 | 4 | 1:40 | Honolulu, Hawaii, United States |
| Sieg | 15-5 | Kazuo Misaki | Decision (unanimous) | | Pride 33 | Feb 24, 2007 | 3 | 5:00 | Las Vegas, Nevada, United States |
| Sieg | 14-5 | Jason Miller | TKO (soccer kicks) | | Icon Sport - Mayhem vs. Trigg | Dec 01, 2006 | 2 | 2:53 | Hawaii, United States |
| Niederlage | 13-5 | Carlos Condit | Submission (triangle armbar) | | Rumble on the Rock 9 | Apr 21, 2006 | 1 | 1:22 | Hawaii, United States |
| Sieg | 13-4 | Ronald Jhun | Decision (unanimous) | | Rumble on the Rock 8 | Jan 20, 2006 | 3 | 5:00 | Hawaii, United States |
| Niederlage | 12-4 | Georges St. Pierre  | Submission (rear-naked choke) |  | UFC 54 | Aug 20, 2005 | 1 | 4:09 | Las Vegas, United States |
| Niederlage | 12-3 | Matt Hughes | Submission (rear-naked choke) |  | UFC 52 | Apr 16, 2005 | 1 | 4:05 | Las Vegas, Nevada, United States |
| Sieg | 12-2 | Renato Verissimo | TKO (elbows) | | UFC 50 | Oct 22, 2004 | 2 | 2:11 | New Jersey, United States |
| Sieg | 11-2 | Dennis Hallman | TKO (Punches) | | UFC 48 | Jun 19, 2004 | 1 | 4:15 | Las Vegas, Nevada, United States |
| Niederlage | 10-2 | Matt Hughes | Submission (standing rear-naked choke) | | UFC 45 | Nov 21, 2003 | 1 | 3:54 | Uncasville, Connecticut, United States |
| Sieg | 10-1 | Dennis Hallman | TKO (Punches) | | WFA 3: Level 3 | Nov 23, 2002 | 1 | 3:50 | Las Vegas, Nevada, United States |
| Sieg | 9-1 | Jason Medina | Submission (elbows) | | WFA 2: Level 2 | Jul 05, 2002 | 1 | 3:43 | Las Vegas, Nevada, United States |
| Sieg | 8-1 | LaVerne Clark | Submission (punches and elbows) | | World Fighting Alliance 1 | Nov 03, 2001 | 3 | 2:15 | Las Vegas, Nevada, United States |
| Niederlage | 7-1 | Hayato Sakurai | TKO (knees) | | Shooto: R.E.A.D. Final | Dec 17, 2000 | 2 | 2:25 | Chiba, Japan |
| Sieg | 7-0 | Ray Cooper | Submission (forearm choke) | | WEF: New Blood Conflict | Aug 26, 2000 | 2 | 3:05 | N/A |
| Sieg | 6-0 | Fabiano Iha | TKO (Punches) | | Pride 8 | Nov 21, 1999 | 1 | 5:00 | Tokyo, Japan |
| Sieg | 5-0 | Jean Jacques Machado | TKO (corner stoppage) | | Vale Tudo Japan 1998 | Oct 25, 1998 | 3 | 0:20 | Tokyo, Japan |
| Sieg | 4-0 | Marcelo Aguiar | TKO (Punches) | | Shooto - Las Grandes Viajes 3 | May 13, 1998 | 2 | 3:08 | Tokyo, Japan |
| Sieg | 3-0 | Dan Gilbert | Submission (forearm choke) | | Unified Shoot Wrestling Federation 7 | Oct 18, 1997 | 1 | 2:45 | Texas, United States |
| Sieg | 2-0 | Javier Buentello | Submission (rear-naked choke) | | Unified Shoot Wrestling Federation 7 | Oct 18, 1997 | 1 | 2:35 | Texas, United States |
| Sieg | 1-0 | Ali Elias | KO (knee) | | Unified Shoot Wrestling Federation 7 | Oct 18, 1997 | 1 | 10:36 | Texas, United States |
