| Niederlage | 22-9 | Mamed Khalidov  | Technical Submission |  | KSW XVI | May 21, 2011 | 1 | 1:35 | Gdańsk, Poland |
| Niederlage | 22-8 | Robbie Lawler  | KO (punches) |  | Strikeforce: St. Louis | Dec 04, 2010 | 1 | 0:50 | St Louis, Missouri, United States |
| Sieg | 22-7 | Kevin Casey | TKO (punches) |  | Lindland vs Casey | May 21, 2010 | 3 | 3:41 | Portland, United States |
| Niederlage | 21-7 | Ronaldo Souza  | Submission |  | Strikeforce: Evolution | Dec 19, 2009 | 1 | 4:18 | San Jose, United States |
| Niederlage | 21-6 | Vitor Belfort | KO (punches) |  | Affliction: Day of Reckoning | Jan 24, 2009 | 1 | 0:37 | Anaheim, United States |
| Sieg | 21-5 | Fabio Nascimento | Decision (unanimous) |  | Affliction: Banned | Jul 19, 2008 | 3 | 5:00 | Anaheim, United States |
| Niederlage | 20-5 | Fedor Emelianenko  | Submission (armbar) |  | BodogFight: Clash of the Nations | Apr 14, 2007 | 1 | 2:58 | St. Petersburg, Russia |
| Sieg | 20-4 | Carlos Newton | Submission (guillotine choke) |  | International Fight League: Houston | Feb 02, 2007 | 2 | 1:43 | Houston, Texas, United States |
| Sieg | 19-4 | Jeremy Horn | TKO (punches) |  | International Fight League: Portland | Sep 09, 2006 | 2 | 0:21 | Portland, United States |
| Niederlage | 18-4 | Quinton Jackson | Decision (split) |  | WFA: King of the Streets | Jul 22, 2006 | 3 | 5:00 | Los Angeles, United States |
| Sieg | 18-3 | Mike Van Arsdale | Submission (guillotine choke) | | Raze MMA: Fight Night | Apr 29, 2006 | 1 | 3:38 | San Diego, United States |
| Sieg | 17-3 | Fabio Leopoldo | Submission (rear-naked choke) | | GFC: Gracie vs. Hammer House | Mar 03, 2006 | 3 | 3:25 | Columbus, Ohio, United States |
| Sieg | 16-3 | Antonio Schembri | TKO (punches) | | Cage Rage 14 | Dec 03, 2005 | 3 | 3:33 | London, England, U.K. |
| Sieg | 15-3 | Joe Doerksen | Decision (unanimous) | | UFC 54 | Aug 20, 2005 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 14-3 | Travis Lutter | Submission (guillotine choke) | | UFC 52 | Apr 16, 2005 | 2 | 3:32 | Las Vegas, United States |
| Sieg | 13-3 | Landon Showalter | Submission (armbar) | | Sportfight 8: Justice | Jan 08, 2005 | 1 | 2:43 | Gresham, United States |
| Sieg | 12-3 | Mark Weir | TKO (doctor stoppage) | | Cage Rage 9: No Mercy | Nov 27, 2004 | 1 | 5:00 | London, England, United Kingdom |
| Niederlage | 11-3 | David Terrell | KO (punches) | | UFC 49 | Aug 21, 2004 | 1 | 0:24 | Las Vegas, United States |
| Sieg | 11-2 | Tony Fryklund | Decision (unanimous) | | Rumble on the Rock 5 | May 07, 2004 | 3 | 5:00 | Honolulu, United States |
| Sieg | 10-2 | Falaniko Vitale | Submission (strikes) | | UFC 45 | Nov 21, 2003 | 3 | 4:23 | Uncasville, United States |
| Niederlage | 9-2 | Falaniko Vitale | KO (slam) | | UFC 43 | Jun 06, 2003 | 1 | 1:56 | Las Vegas, United States |
| Sieg | 9-1 | Phil Baroni | Decision (unanimous) | | UFC 41 | Feb 28, 2003 | 3 | 5:00 | Atlantic City, United States |
| Sieg | 8-1 | Ivan Salaverry | Decision (unanimous) | | UFC 39 | Sep 27, 2002 | 3 | 5:00 | Uncasville, United States |
| Niederlage | 7-1 | Murilo Bustamante | Submission (guillotine choke) | | UFC 37 | May 10, 2002 | 3 | 1:33 | Bossier City, United States |
| Sieg | 7-0 | Pat Miletich | TKO (punches) | | UFC 36 | Mar 22, 2002 | 1 | 3:09 | Las Vegas, United States |
| Sieg | 6-0 | Phil Baroni | Decision (majority) | | UFC 34 | Nov 21, 2001 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 5-0 | Ricardo Almeida | DQ (repeated fouls) | | UFC 31 | May 04, 2001 | 3 | 4:21 | Atlantic City, United States |
| Sieg | 4-0 | Yoji Anjo | TKO (punches) | | UFC 29 | Dec 16, 2000 | 1 | 2:58 | Tokyo, Japan |
| Sieg | 3-0 | Travis Fulton | Submission (choke) | | International Fighting Championships 6 | Sep 20, 1997 | 1 | 22:13 | New Town, United States |
| Sieg | 2-0 | Mark Waters | Submission (punches) | | International Fighting Championships 6 | Sep 20, 1997 | 1 | 2:20 | New Town, United States |
| Sieg | 1-0 | Karo Davtyan | TKO (punches) | | World Fighting Federation | Feb 14, 1997 | 1 | 8:34 | Birmingham, United States |
