| Sieg | 33-4-1 | Adriano Moraes  | Decision (Unanimous) |  | ONE on Prime Video 10: Johnson vs Moraes 3 | May 05, 2023 | 5 | 5:00 | Broomfield, Colorado, United States  |
| Sieg | 32-4-1 | Adriano Moraes | KO (Flying Knee) |  | ONE on Prime Video 1: Moraes vs. Johnson 2 | Aug 27, 2022 | 4 | 3:50 | Singapore  |
| Sieg | 31-4-1 | Rodtang Jitmuangnon  | Technical Submission (Rear-Naked Choke) |  | ONE Championship: One X | Mar 26, 2022 | 2 | 2:13 | Singapore |
| Cancelled Bout | | Rodtang Jitmuangnon | - |  | ONE Championship: One X | Dec 05, 2021 | - | - | Singapore |
| Niederlage | 30-4-1 | Adriano Moraes | KO (Knee) |  | ONE on TNT 1 | Apr 07, 2021 | 2 | 2:24 | Singapore |
| Cancelled Bout | | Adriano Moraes | - |  | ONE Championship: Infinity 1 | May 29, 2020 | - | - | Manila, Philippines |
| Sieg | 30-3-1 | Danny Kingad  | Decision (Unanimous) |  | ONE Championship: Century | Oct 13, 2019 | 3 | 5:00 | Tokyo, Japan |
| Sieg | 29-3-1 | Tatsumitsu Wada  | Decision (Unanimous) |  | ONE Championship: Dawn of Heroes | Aug 02, 2019 | 3 | 5:00 | Manila, Philippines |
| Sieg | 28-3-1 | Yuya Wakamatsu | Submission (Guillotine Choke) |  | ONE Championship: A New Era | Mar 31, 2019 | 2 | 2:40 | Tokyo, Japan |
| Niederlage | 27-3-1 | Henry Cejudo | Decision (Split) |  | UFC 227: Dillashaw vs Garbrandt 2 | Aug 04, 2018 | 5 | 5:00 | Los Angeles, California, United States |
| Sieg | 27-2-1 | Ray Borg | Submission (armbar) |  | UFC 216: Ferguson vs Lee | Oct 07, 2017 | 5 | 3:15 | Las Vegas, Nevada, United States |
| Sieg | 26-2-1 | Wilson Reis | Submission (armbar) |  | UFC on FOX 24: Johnson vs Reis | Apr 15, 2017 | 3 | 4:49 | Kansas City, Missouri, United States |
| Sieg | 25-2-1 | Tim Elliott | Decision (unanimous) |  | UFC: The Ultimate Fighter 24 Finale | Dec 03, 2016 | 5 | 5:00 | Las Vegas, Nevada, United States |
| Sieg | 24-2-1 | Henry Cejudo | TKO (knees and punches) |  | UFC 197: Jones vs Saint Preux | Apr 23, 2016 | 1 | 2:49 | Las Vegas, United States |
| Sieg | 23-2-1 | John Dodson | Decision (Unanimous) |  | UFC 191: Johnson vs Dodson 2 | Sep 05, 2015 | 5 | 5:00 | Las Vegas, Nevada, United States |
| Sieg | 22-2-1 | Kyoji Horiguchi | Submission (armbar) |  | UFC 186 | Apr 25, 2015 | 5 | 4:59 | Montreal, Quebec, Canada |
| Sieg | 21-2-1 | Chris Cariaso | Submission (kimura) |  | UFC 178 | Sep 27, 2014 | 2 | 2:29 | Las Vegas, Nevada, United States |
| Sieg | 20-2-1 | Ali Bagautinov  | Decision (unanimous) |  | UFC 174 | Jun 14, 2014 | 5 | 5:00 | Vancouver, British Columbia, Canada |
| Sieg | 19-2-1 | Joseph Benavidez | KO (punch) |  | UFC on Fox: Johnson vs. Benavidez 2 | Dec 14, 2013 | 1 | 2:08 | Sacramento, California, United States |
| Sieg | 18-2-1 | John Moraga | Submission (armbar) |  | UFC on Fox: Johnson vs. Moraga | Jul 27, 2013 | 5 | 3:43 | Seattle, Washington, United States |
| Sieg | 17-2-1 | John Dodson | Decision (unanimous) | | UFC on Fox: Johnson vs. Dodson | Jan 26, 2013 | 5 | 5:00 | Chicago, Illinois, United States |
| Sieg | 16-2-1 | Joseph Benavidez | Decision (split) |  | UFC 152 | Sep 22, 2012 | 5 | 5:00 | Toronto, Ontario, Canada |
| Sieg | 15-2-1 | Ian McCall | Decision (unanimous) | | UFC on FX: Johnson vs McCall | Jun 08, 2012 | 3 | 5:00 | Fort Lauderdale, United States |
| Unentschieden | 14-2-1 | Ian McCall | Draw (majority) |  | UFC on FX: Alves vs Kampmann | Mar 03, 2012 | 3 | 5:00 | Sydney, Australia |
| Niederlage | 14-2 | Dominick Cruz | Decision (unanimous) |  | UFC Live: Cruz vs Johnson | Oct 01, 2011 | 5 | 5:00 | Washington D.C., United States |
| Sieg | 14-1 | Miguel Torres | Decision (unanimous) |  | UFC 130 | May 28, 2011 | 3 | 5:00 | Las Vegas, Nevada, United States |
| Sieg | 13-1 | Norifumi Yamamoto | Decision (unanimous) |  | UFC 126 | Feb 05, 2011 | 3 | 5:00 | Las Vegas, Nevada, United States |
| Sieg | 12-1 | Damacio Page | Submission (guillotine choke) |  | WEC 52 | Nov 11, 2010 | 3 | 2:27 | Las Vegas, Nevada, United States |
| Sieg | 11-1 | Nick Pace | Decision (unanimous) | | WEC 51 | Sep 30, 2010 | 3 | 5:00 | Broomfield, Colorado, United States |
| Niederlage | 10-1 | Brad Pickett  | Decision (unanimous) | | WEC 48 | Apr 24, 2010 | 3 | 5:00 | Sacramento, California, United States |
| Sieg | 10-0 | Jesse Brock | KO (head kick) | | AFC 68 | Feb 10, 2010 | 1 | 1:06 | Anchorage, Alaska, United States |
| Sieg | 9-0 | Frankie Mendez | Submission (rear-naked choke) | | KOTC: Thunderstruck | Aug 15, 2009 | 1 | 4:38 | Everett, Washington, United States |
| Sieg | 8-0 | Louis Contreras | Submission (rear-naked choke) | | Genesis: Rise of Kings | Jun 27, 2009 | 1 | N/A | Shoreline, Washington, United States |
| Sieg | 7-0 | Forrest Seabourn | Submission (rear-naked choke) | | Genesis: Cold War | Dec 06, 2008 | 1 | N/A | Bellevue, Washington, United States |
| Sieg | 6-0 | Jose Garza | Submission (armbar) | | AX Fighting Championships 22: Last Man Standing | Aug 16, 2008 | 2 | 1:56 | Lynnwood, Washington, United States |
| Sieg | 5-0 | Louis Contreras | Submission (americana) | | USA MMA: Northwest Fighting Challenge 6 | Mar 29, 2008 | 1 | N/A | Tumwater, Washington, United States |
| Sieg | 4-0 | Eric Alvarez | Decision (unanimous) | | AX Fighting Championships 20: March Madness | Mar 08, 2008 | 5 | 5:00 | Lynnwood, Washington, United States |
| Sieg | 3-0 | Jeff Bourgeois | Decision (unanimous) | | AX Fighting Championships 18: The Art of War | Sep 22, 2007 | 3 | 5:00 | Lynnwood, Washington, United States |
| Sieg | 2-0 | Pedro Mercado | TKO (punches) | | KOTC: No Holds Barred | Jul 14, 2007 | 1 | 1:25 | Porterville, California, United States |
| Sieg | 1-0 | Brandon Fieds | KO (punch) | | AX Fighting Championships 16: Annihilation | Apr 28, 2007 | 1 | 0:17 | Everett, Washington, United States |
