| Sieg | 40-16-1 (1) | Siala-Mou Siliga  | Technical Submission (armbar) |  | Road FC 47: 2018 Openweight Grand Prix: Opening Round | May 12, 2018 | 1 | 3:43 | Beijing, China  |
| Sieg | 39-16-1 (1) | Ricco Rodriguez | TKO (Leg Kicks) |  | Akhmat Fight Show 31: Ushukov vs Vagaev | Nov 21, 2016 | 1 | 1:00 | Grozny, Russia  |
| Sieg | 38-16-1 (1) | Houston Alexander | KO (punches) | | RFA 2 - Yvel vs. Alexander | Mar 30, 2012 | 1 | 3:59 | Nebraska, United States |
| Sieg | 37-16-1 (1) | Damian Dantibo | TKO (punches) | | RFA 1: Pulver vs. Elliott | Dec 16, 2011 | 1 | 3:12 | Kearney, United States |
| Niederlage | 36-16-1 (1) | Jon Madsen | TKO (punches) |  | UFC 121 | Oct 23, 2010 | 1 | 1:48 | Anaheim, United States |
| Niederlage | 36-15-1 (1) | Ben Rothwell | Decision (unanimous) |  | UFC 115 | Jun 12, 2010 | 3 | 5:00 | Vancouver, British Columbia, Canada  |
| Niederlage | 36-14-1 (1) | Junior dos Santos  | TKO (strikes) |  | UFC 108 | Jan 02, 2010 | 1 | 2:07 | Las Vegas, United States |
| Sieg | 36-13-1 (1) | Pedro Rizzo | KO (punches) |  | Ultimate Chaos: Lashley vs. Sapp 2009 | Jun 27, 2009 | 1 | 2:10 | Biloxi, United States |
| Niederlage | 35-13-1 (1) | Josh Barnett | Submission (punches) |  | Affliction: Day of Reckoning | Jan 24, 2009 | 3 | 3:05 | Anaheim, United States |
| Sieg | 35-12-1 (1) | Alexander Timonov | TKO (punches) |  | M-1 Challenge 9: Russia | Nov 21, 2008 | 1 | 0:22 | St. Petersburg, Russia |
| Sieg | 34-12-1 (1) | Sergey Shemetov | Submission (toe hold) | | KOE: Tough Is Not Enough | Oct 05, 2008 | 1 | 0:53 | Rotterdam, Netherlands  |
| Sieg | 33-12-1 (1) | Michał Kita  | KO (Punch) | | GFN - Gentlemen Fight Night 2008 | May 24, 2008 | 2 | 0:02 | Rotterdam, Netherlands |
| Sieg | 32-12-1 (1) | Hakim Gouram | KO (punch) | | K-1 World Grand Prix 2007 in Amsterdam | Jun 23, 2007 | 1 | 0:31 | Amsterdam, Netherlands |
| Sieg | 31-12-1 (1) | Akira Shoji | TKO (punches) | | Pride 34 - Kamikaze | Apr 08, 2007 | 1 | 3:43 | Saitama Super Arena, Japan  |
| Cancelled Bout | | Sergei Kharitonov | - |  | Pride 33 | Feb 24, 2007 | - | - | Las Vegas, United States |
| Sieg | 30-12-1 (1) | Rodney Glunder | KO (punches) | | 2H2H: Pride & Honor | Nov 12, 2006 | 1 | 1:38 | Rotterdam, Netherlands |
| Sieg | 29-12-1 (1) | Fabiano Scherner | TKO (punches) | | Cage Rage 17 - Ultimate Challenge | Jul 01, 2006 | 1 | 1:30 | London, England  |
| Niederlage | 28-12-1 (1) | Roman Zentsov | KO (punch) |  | Pride Total Elimination Absolute 2006 | May 05, 2006 | 1 | 4:55 | Osaka Dome, Osaka, Japan, |
| Sieg | 28-11-1 (1) | Valentijn Overeem | Submission (armbar) | | MMA Event 2005 Amsterdam | Jun 12, 2005 | 1 | 4:30 | Amsterdam, Netherlands |
| Niederlage | 27-11-1 (1) | Ikuhisa Minowa | Submission (toe hold) | | Pride Bushido 6 | Apr 03, 2005 | 1 | 1:10 | Yokohama, Japan |
| Niederlage | 27-10-1 (1) | Atte Backman  | DQ (ko'd the referee) | | Fight Festival 12 | Nov 13, 2004 | 1 | 0:35 | Helsinki, Finland |
| Sieg | 27-9-1 (1) | Cheick Kongo  | Submission (punches) | | It's Showtime 2004 Amsterdam | May 20, 2004 | 2 | 4:40 | Amsterdam, Netherlands |
| Unentschieden | 26-9-1 (1) | Daniel Tabera  | Draw | | M-1 MFC: Russia vs the World 7 2003 | Dec 05, 2003 | 1 | 10:00 | St. Petersburg, Russia |
| Niederlage | 26-9 (1) | Jeremy Horn | Decision (unanimous) | | Pride 21 | Jun 23, 2002 | 3 | 5:00 | Saitama Super Arena, Japan |
| Sieg | 26-8 (1) | Bob Schrijber | TKO (doctor stoppage) | | 2H2H 4: Simply the Best 4 | Mar 17, 2002 | - | N/A | Rotterdam, Netherlands |
| Sieg | 25-8 (1) | Ibragim Magomedov | Submission (rear naked choke) | | M-1 MFC - Russia vs. the World 2 | Nov 11, 2001 | 1 | 2:45 | St. Petersburg, Russia |
| Niederlage | 24-8 (1) | Don Frye | DQ (gouging the eyes) | | Pride 16 | Sep 24, 2001 | 1 | 7:27 | Osaka Castle Hall, Japan |
| Niederlage | 24-7 (1) | Igor Vovchanchyn  | Submission (rear naked choke) | | Pride 14 | May 27, 2001 | 1 | 1:52 | Yokohama Arena, Japan |
| Sieg | 24-6 (1) | Carlos Barreto | KO (flying knee) | | 2H2H 2: Simply The Best | Mar 18, 2001 | 1 | 2:20 | Rotterdam, Netherlands |
| Niederlage | 23-6 (1) | Kazuyuki Fujita | Decision (unanimous) | | Pride 12 | Dec 09, 2000 | 2 | 10:00 | Saitama Super Arena, Japan |
| NC | 23-5 (1) | Wanderlei Silva | No Contest (groin strike) | | Pride 11 | Oct 31, 2000 | 1 | 0:21 | Osaka, Osaka, Japan |
| Sieg | 23-5 | Gary Goodridge | KO (head kick) | | Pride 10 - Return of the Warriors 2000 | Aug 27, 2000 | 1 | 0:28 | Tokorozawa, Saitama, Japan |
| Niederlage | 22-5 | Vitor Belfort | Decision (unanimous) | | Pride 9 | Jun 04, 2000 | 2 | 10:00 | Nagoya, Aichi, Japan |
| Sieg | 22-4 | Kiyoshi Tamura | TKO (strikes) | | Rings: Millennium Combine 1 2000 | Apr 20, 2000 | 1 | 13:13 | Tokyo, Japan |
| Sieg | 21-4 | Brian Dunn | TKO (punches) | | 2H2H 1: 2 Hot 2 Handle | Mar 05, 2000 | 1 | 0:21 | Rotterdam, Netherlands |
| Niederlage | 20-4 | Dan Henderson | Decision (unanimous) | | King of Kings Tournament 1999 | Feb 26, 2000 | 2 | 5:00 | Tokyo, Japan |
| Sieg | 20-3 | Joop Kasteel | KO (palm strikes) | | Rings Holland: There Can Only Be One Champion | Feb 06, 2000 | 1 | 4:16 | Amsterdam, Netherlands |
| Sieg | 19-3 | Tsuyoshi Kohsaka | TKO (cut) | | Rings: King of Kings 1999 Block B | Dec 22, 1999 | 3 | 05:00 | Osaka, Japan |
| Sieg | 18-3 | Tariel Bitsadze | Submission (armbar) | | Rings: King of Kings 1999 Block B | Dec 22, 1999 | 1 | 2:18 | Osaka, Japan |
| Sieg | 17-3 | Dennis Reed | KO (flying knee) | | AAC 2: Amsterdam Absolute Championship 2 | Nov 27, 1999 | 1 | 1:43 | Amsterdam, Netherlands |
| Sieg | 16-3 | Fabio Piamonte | TKO (strikes) | | WVC 9: World Vale Tudo Championship 9 | Sep 27, 1999 | 1 | 2:28 | Havana Beach Club, Aruba  |
| Niederlage | 15-3 | Tsuyoshi Kohsaka | Technical Decision (lost points) | | Rings: Rise 5th | Aug 19, 1999 | 1 | 8:17 | Japan |
| Sieg | 15-2 | Semmy Schilt | KO (punches) | | Rings Holland: The Kings of the Magic Ring | Jun 20, 1999 | 2 | 4:45 | Amsterdam, Netherlands |
| Sieg | 14-2 | Tsuyoshi Kohsaka | TKO (doctor stoppage) | | Rings: Rise 2nd | Apr 23, 1999 | 1 | 14:58 | Japan |
| Sieg | 13-2 | Todd Medina | KO (knee) | | WVC: World Vale Tudo Championship | Mar 20, 1999 | 1 | 0:10 | Aruba, Aruba |
| Sieg | 12-2 | Big Mo T | KO (flying knee) | | Rings Holland: Judgement Day 1999 | Feb 07, 1999 | 1 | 1:59 | Amsterdam, Netherlands |
| Sieg | 11-2 | Lee Hasdell | TKO (cut) | | Rings Holland: The Thialf Explosion | Oct 24, 1998 | - | N/A | Amsterdam, Netherlands |
| Sieg | 10-2 | Valentijn Overeem | TKO (shoulder injury) | | Rings Holland: | Jun 07, 1998 | 1 | 0:38 | Netherlands |
| Niederlage | 9-2 | Karimula Barkalaev | DQ (biting) | | IAFC: Pankration European Championship 1998 | May 23, 1998 | 1 | 4:49 | Moscow, Russia |
| Niederlage | 9-1 | Bob Schrijber | KO (punches and kick) | | IMA: KO Power Tournament | Apr 12, 1998 | 1 | 4:15 | Amsterdam, Netherlands |
| Sieg | 9-0 | Algirdas Darulis | TKO (3 knockdowns) | | IMA: KO Power Tournament 1998 | Apr 12, 1998 | 1 | 3:02 | Amsterdam, Netherlands |
| Sieg | 8-0 | Bob Schrijber | Submission (achilles lock) | | Rings Holland: The King of Rings | Feb 08, 1998 | 2 | 1:12 | Amsterdam, Netherlands |
| Sieg | 7-0 | Bas Lussen | KO | | RDFF 2: Red Devil Free Fight 1997 | Dec 07, 1997 | - | N/A | Amsterdam, Netherlands |
| Sieg | 6-0 | Sergei Tunic | KO (punches) | | M-1 MFC - World Championship 1997 | Nov 01, 1997 | 1 | 1:16 | St. Petersburg, Russia |
| Sieg | 5-0 | Oleg Tsygolnik | KO (punch) | | M-1 MFC - World Championship 1997 | Nov 01, 1997 | 1 | 1:41 | St. Petersburg, Russia |
| Sieg | 4-0 | Pedro Palm | TKO | | Gym Almaar: Fight Gala | Oct 05, 1997 | - | N/A | Bergen, Holland, Netherlands |
| Sieg | 3-0 | Vyacheslav Kiselyov | TKO (knees) | | RDFF 1: Red Devil Free Fight 1 | Sep 27, 1997 | 1 | 0:51 | Amsterdam, Netherlands |
| Sieg | 2-0 | Leon Dijk | KO (knee) | | Rings Holland - Utrecht at War 1997 | Jun 29, 1997 | 1 | 2:05 | Utrecht City, Netherlands |
| Sieg | 1-0 | Rob van Leeuwen | TKO (corner stoppage) | | Rings Holland - The Final Challenge | Feb 02, 1997 | 1 | 4:06 | Amsterdam, Netherlands |
