| Cancelled Bout | | Donald Cerrone  | - |  | UFC Fight Night: Kattar vs Emmett | Jun 18, 2022 | - | - | Austin, Texas, United States |
| Cancelled Bout | | Donald Cerrone | - |  | UFC 274: Oliveira vs Gaethje | May 07, 2022 | - | - | Phoenix, Arizona, United States |
| Sieg | 28-15 | Jonathan Pearce | TKO (Punches) |  | UFC on ESPN2: Weidman vs Reyes | Oct 18, 2019 | 1 | 1:33 | Boston, Massachusetts, United States |
| Niederlage | 27-15 | Chris Gruetzemacher | TKO (corner stoppage) |  | UFC 223: Nurmagomedov vs Iaquinta | Apr 07, 2018 | 2 | 5:00 | Brooklyn, New York, United States |
| Niederlage | 27-14 | Clay Guida | TKO (Punches and Elbows) |  | UFC Fight Night 120: Poirier vs Pettis | Nov 11, 2017 | 1 | 1:07 | Norfolk, Virginia, United States |
| Niederlage | 27-13 | Stevie Ray  | Decision (majority) | | UFC Fight Night 108: Swanson vs Lobov | Apr 22, 2017 | 3 | 5:00 | Nashville, Tennessee, United States |
| Sieg | 27-12 | Marcin Held  | Decision (split) |  | UFC Fight Night 103: Penn vs Rodriguez | Jan 15, 2017 | 3 | 5:00 | Phoenix, Arizona, United States |
| Niederlage | 26-12 | Jim Miller | Decision (split) |  | UFC on FOX 21: Maia vs Condit | Aug 27, 2016 | 3 | 5:00 | Vancouver, British Columbia, Canada |
| Sieg | 26-11 | Diego Sanchez | TKO (punches) |  | UFC 200: Tate vs Nunes | Jul 09, 2016 | 1 | 1:26 | Las Vegas, Nevada, United States |
| Niederlage | 25-11 | Evan Dunham | Decision (unanimous) |  | The Ultimate Fighter: Team McGregor vs. Team Faber Finale | Dec 11, 2015 | 3 | 5:00 | Las Vegas, Nevada, United States |
| Sieg | 25-10 | Takanori Gomi  | TKO (punches) | | UFC on Fox: Dillashaw vs. Barão 2 | Jul 25, 2015 | 1 | 2:37 | Chicago, Illinois, United States |
| Niederlage | 24-10 | Al Iaquinta | TKO (punches) |  | UFC 183 | Jan 31, 2015 | 2 | 3:34 | Las Vegas, Nevada, United States |
| Sieg | 24-9 | Michael Chiesa | TKO (doctor stoppage) |  | UFC Fight Night: Jacare vs. Mousasi | Sep 05, 2014 | 2 | 2:14 | Mashantucket, Connecticut, United States |
| Sieg | 23-9 | Mac Danzig | Decision (unanimous) | | UFC on Fox: Johnson vs. Benavidez 2 | Dec 14, 2013 | 3 | 5:00 | Sacramento, California, United States |
| Niederlage | 22-9 | Michael Johnson | Decision (unanimous) |  | UFC Fight Night: Shogun vs. Sonnen | Aug 17, 2013 | 3 | 5:00 | Massachusetts, United States |
| Niederlage | 22-8 | Jim Miller | Decision (unanimous) | | UFC 155 | Dec 29, 2012 | 3 | 5:00 | Las Vegas, Nevada, United States |
| Sieg | 22-7 | Jamie Varner | Submission (triangle choke) | | UFC on Fox: Shogun vs. Vera | Aug 04, 2012 | 3 | 2:44 | Los Angeles, California, United States |
| Niederlage | 21-7 | Anthony Pettis | KO (head kick and punches) |  | UFC 144 | Feb 26, 2012 | 1 | 1:21 | Saitama, Japan |
| Sieg | 21-6 | Melvin Guillard | Submission (rear-naked choke) | | UFC 136 | Oct 08, 2011 | 1 | 0:47 | Houston, Texas, United States |
| Sieg | 20-6 | Curt Warburton | Submission (triangle kimura) | | UFC Live: Kongo vs. Barry | Jun 26, 2011 | 1 | 1:58 | Pittsburgh, Pennsylvania, United States |
| Niederlage | 19-6 | George Sotiropoulos  | Submission (kimura) | | UFC 123 | Nov 20, 2010 | 2 | 2:43 | Auburn Hills, Michigan, United States |
| Sieg | 19-5 | Gabe Ruediger | Submission (armbar) | | UFC 118 | Aug 28, 2010 | 1 | 2:01 | Boston, Massachusetts, United States |
| Niederlage | 18-5 | Sam Stout  | Decision (unanimous) | | UFC 108 | Jan 02, 2010 | 3 | 5:00 | Las Vegas, Nevada, United States |
| Sieg | 18-4 | Jeremy Stephens | Submission (armbar) | | UFC Fight Night: Lauzon vs. Stephens | Feb 07, 2009 | 2 | 4:43 | Florida, United States |
| Sieg | 17-4 | Kyle Bradley | TKO (punches) | | UFC Fight Night: Diaz vs Neer | Sep 18, 2008 | 2 | 1:34 | Omaha, Nebraska, United States |
| Niederlage | 16-4 | Kenny Florian | TKO (punches and elbows) | | UFC Fight Night: | Apr 02, 2008 | 2 | 3:28 | Broomfield, United States |
| Sieg | 16-3 | Jason Reinhardt | Submission (rear-naked choke) | | UFC 78 | Nov 17, 2007 | 1 | 1:14 | Newark, New Jersey, United States |
| Sieg | 15-3 | Brandon Melendez | Submission (triangle choke) | | The Ultimate Fighter 5 Finale | Jun 23, 2007 | 2 | 2:09 | Las Vegas, Nevada, United States |
| Sieg | 14-3 | Jens Pulver | KO (punches) | | UFC 63 | Sep 23, 2006 | 1 | 0:48 | Anaheim, California, United States |
| Sieg | 13-3 | Douglas Brown | Submission (armbar) | | WFL 6: Real: No Fooling Around | Apr 01, 2006 | 1 | 1:47 | Revere, Massachusetts, United States |
| Sieg | 12-3 | Zane Baker | KO (slam) | | WFL 6: Real: No Fooling Around | Apr 01, 2006 | 1 | 3:39 | Revere, Massachusetts, United States |
| Sieg | 11-3 | Adam Comfort | Submission (Achilles lock) | | WFL 6: Real: No Fooling Around | Apr 01, 2006 | 1 | 1:44 | Revere, Massachusetts, United States |
| Niederlage | 10-3 | Raphael Assunção  | Submission (armbar) | | Absolute Fighting Championships 15 | Feb 18, 2006 | 2 | 4:37 | Fort Lauderdale, Florida, United States |
| Sieg | 10-2 | Antoine Skinner | Submission (triangle choke) | | CZ 12: Night of Champions | Nov 05, 2005 | 1 | 1:00 | Revere, Massachusetts, United States |
| Niederlage | 9-2 | Ivan Menjivar | Submission (calf slicer) | | APEX: Undisputed | Sep 03, 2005 | 1 | 3:39 | Montreal, Quebec, Canada |
| Sieg | 9-1 | Tim Honeycutt | TKO (punches) | | Absolute Fighting Championships 13 | Jul 30, 2005 | 1 | 0:11 | Fort Lauderdale, Florida, United States |
| Niederlage | 8-1 | Jorge Masvidal | TKO (punches) | | AFC 12 | Apr 30, 2005 | 2 | 3:57 | Florida, United States |
| Sieg | 8-0 | Joe Ahlert | Submission (guillotine choke) | | Mass Destruction 19 | Feb 26, 2005 | 3 | 3:47 | Boston, Massachusetts, United States |
| Sieg | 7-0 | Ryan Ciotoli | Technical Submission (armbar) | | CZ 9: Hot Like Fire | Dec 14, 2004 | 3 | 0:34 | Revere, Massachusetts, United States |
| Sieg | 6-0 | Mike Brown | Submission (rear-naked choke) | | CZ 8: Street Justice | Oct 02, 2004 | 3 | 2:14 | Revere, Massachusetts, United States |
| Sieg | 5-0 | Justin Blasich | Submission (rear-naked choke) | | Mass Destruction 17 | Aug 28, 2004 | 1 | 1:02 | Boston, Massachusetts, United States |
| Sieg | 4-0 | Renat Myzabekov | Submission (ankle lock) | | CZ 7: Gravel Pit | Jul 10, 2004 | 1 | 0:40 | Revere, Massachusetts, United States |
| Sieg | 3-0 | Kyle Sprouse | Submission (heel hook) | | CZ 6: Rampage | Jun 26, 2004 | 1 | 0:26 | Taunton, Massachusetts, United States |
| Sieg | 2-0 | Jerry Mosquea | TKO (punches) | | MMA: Eruption | Apr 30, 2004 | 1 | 2:37 | Lowell, Massachusetts, United States |
| Sieg | 1-0 | David Gilrein | Submission (armbar) | | Mass Destruction 15 | Feb 21, 2004 | 1 | 3:42 | Boston, Massachusetts, United States |
