| Niederlage | 17-11 | Mauricio Alonso  | TKO (punches) |  | Bellator 172: Thomson vs Pitbull | Feb 18, 2017 | 1 | 4:42 | San Jose, California, United States |
| Niederlage | 17-10 | Erick Silva | Submission (guillotine choke) |  | UFC Fight Night: Maia vs LaFlare | Mar 21, 2015 | 1 | 4:21 | Rio de Janeiro, Brazil |
| Niederlage | 17-9 | Jake Ellenberger  | Submission (north-south choke) |  | UFC 184 | Feb 28, 2015 | 2 | 4:20 | Los Angeles, California, United States |
| Niederlage | 17-8 | Tyron Woodley | KO (punches) |  | UFC 167 | Nov 16, 2013 | 1 | 4:38 | Las Vegas, Nevada, US |
| Niederlage | 17-7 | Robbie Lawler | TKO (punches) | | UFC 157 | Feb 23, 2013 | 1 | 3:57 | Anaheim, California, US |
| Niederlage | 17-6 | Johny Hendricks | Decision (split) |  | UFC on Fox: Diaz vs. Miller | May 05, 2012 | 3 | 5:00 | East Rutherford, United States |
| Sieg | 17-5 | Mike Pierce | Decision (split) |  | UFC 143 | Feb 04, 2012 | 3 | 5:00 | Las Vegas, Nevada, US |
| Sieg | 16-5 | Matt Hughes | KO (punches) |  | UFC 135 | Sep 24, 2011 | 1 | 4:59 | Denver, Colorado, US |
| Niederlage | 15-5 | Georges St. Pierre  | Decision (unanimous) |  | UFC 124 | Dec 11, 2010 | 5 | 5:00 | Montreal, Quebec, Canada |
| Sieg | 15-4 | Paul Daley  | Decision (unanimous) |  | UFC 113 | May 08, 2010 | 3 | 5:00 | Montreal, Quebec, Canada |
| Sieg | 14-4 | Anthony Johnson | Submission (rear naked choke) |  | UFC 106 | Nov 21, 2009 | 2 | 4:47 | Las Vegas, United States |
| Sieg | 13-4 | Frank Trigg | KO (punches) |  | UFC 103 | Sep 19, 2009 | 1 | 1:25 | Dallas, Texas, United States |
| Niederlage | 12-4 | Paulo Thiago | KO (punches) | | UFC 95 | Feb 21, 2009 | 1 | 3:29 | London, London, England |
| Sieg | 12-3 | Yoshiyuki Yoshida | KO (punch) | | UFC: Fight for the Troops | Dec 10, 2008 | 1 | 2:15 | Fayetteville, United States |
| Niederlage | 11-3 | Thiago Alves | Decision (unanimous) |  | UFC 90 | Oct 25, 2008 | 3 | 5:00 | Rosemont, Illinois, US |
| Sieg | 11-2 | Chris Lytle | Decision (unanimous) | | UFC 86 | Jul 05, 2008 | 3 | 5:00 | Las Vegas, Nevada, US |
| Sieg | 10-2 | Dustin Hazelett | TKO (head kick & punches) | | UFC 82 | Mar 01, 2008 | 2 | 1:24 | Columbus, Ohio, United States |
| Niederlage | 9-2 | Georges St. Pierre | Decision (unanimous) |  | UFC 74 | Aug 25, 2007 | 3 | 5:00 | Las Vegas, United States |
| Sieg | 9-1 | Diego Sanchez | Decision (unanimous) | | UFC 69 | Apr 07, 2007 | 3 | 5:00 | Houston, Texas, United States |
| Sieg | 8-1 | Jeff Joslin | Decision (unanimous) | | UFC Fight Night: Sanchez vs. Riggs | Dec 13, 2006 | 3 | 5:00 | San Diego, California, US |
| Sieg | 7-1 | Jonathan Goulet | Submission (punches) | | UFC Fight Night 6 | Aug 17, 2006 | 1 | 4:10 | Las Vegas, Nevada, US |
| Sieg | 6-1 | Dave Menne | Decision (unanimous) | | UFC Ultimate Fight Night 5 | Jun 28, 2006 | 3 | 5:00 | Las Vegas, Nevada, US |
| Sieg | 5-1 | Ansar Chalangov  | Submission (rear-naked choke) | | UFC Ultimate Fight Night 4 | Apr 06, 2006 | 1 | 3:29 | Las Vegas, Nevada, US |
| Niederlage | 4-1 | Drew Fickett | Technical Submission | | UFC Ultimate Fight Night 2 | Oct 03, 2005 | 3 | 4:38 | Las Vegas, Nevada, US |
| Sieg | 4-0 | Pete Spratt | Submission (rear-naked choke) | | UFC Fight Night | Aug 06, 2005 | 1 | 1:53 | Las Vegas, Nevada, US |
| Sieg | 3-0 | Chris Sanford | KO (punch) | | The Ultimate Fighter 1 Finale | Apr 09, 2005 | 1 | 4:21 | Las Vegas, Nevada, US |
| Sieg | 2-0 | Luke Cummo | Decision (unanimous) | | Ring of Combat 6 | Apr 24, 2004 | 3 | 5:00 | Elizabeth, New Jersey, US |
| Sieg | 1-0 | Cruz Chacon | Submission (neck crank) | | King of the Rockies | Jan 03, 2004 | 3 | 2:57 | Fort Collins, Colorado, US |
