| Niederlage | 18-5 | Alexander Volkanovski  | TKO (punches) |  | UFC 232: Jones vs Gustafsson 2 | Dec 29, 2018 | 2 | 4:14 | Inglewood, California, United States  |
| Sieg | 18-4 | Myles Jury | TKO (punches) |  | UFC FIght Night 133: Dos Santos vs Ivanov | Jul 14, 2018 | 1 | 2:52 | Boise, Idaho, United States |
| Niederlage | 17-4 | Frankie Edgar | KO (punch) |  | UFC: The Ultimate Fighter 22 Finale | Dec 11, 2015 | 1 | 2:28 | Las Vegas, United States |
| Niederlage | 17-3 | Conor McGregor  | TKO (Punches) |  | UFC 189: Mendes vs McGregor | Jul 11, 2015 | 2 | 4:57 | Las Vegas, United States |
| Sieg | 17-2 | Ricardo Lamas | TKO (punches) |  | UFC Fight Night: Mendes vs Lamas | Apr 04, 2015 | 1 | 2:45 | Fairfax, United States |
| Niederlage | 16-2 | Jose Aldo  | Decision (unanimous) |  | UFC 179: Aldo vs Mendes II | Oct 25, 2014 | 5 | 5:00 | Curitiba, Parana, Brazil |
| Sieg | 16-1 | Nik Lentz | Decision (unanimous) |  | UFC on Fox: Johnson vs. Benavidez 2 | Dec 14, 2013 | 3 | 5:00 | Sacramento, California, US |
| Sieg | 15-1 | Clay Guida | TKO (punches) | | UFC 164 | Aug 31, 2013 | 3 | 0:30 | Milwaukee, United States |
| Sieg | 14-1 | Darren Elkins | TKO (punches) | | UFC on Fox: Henderson vs. Melendez | Apr 20, 2013 | 1 | 1:08 | San Jose, California, US |
| Sieg | 13-1 | Yaotzin Meza | KO (punches) | | UFC on FX: Sotiropoulos vs. Pearson | Dec 15, 2012 | 1 | 1:55 | Gold Coast, Australia |
| Sieg | 12-1 | Cody McKenzie | TKO (punch to the body) |  | UFC 148 | Jul 07, 2012 | 1 | 0:31 | Las Vegas, Nevada, US |
| Niederlage | 11-1 | Jose Aldo | KO (knee & punches) |  | UFC 142 | Jan 14, 2012 | 1 | 4:59 | Rio de Janeiro, Brazil |
| Sieg | 11-0 | Rani Yahya | Decision (unanimous) |  | UFC 133 | Aug 06, 2011 | 3 | 5:00 | Philadelphia, Pennsylvania, US |
| Sieg | 10-0 | Michihiro Omigawa | Decision (unanimous) |  | UFC 126 | Feb 05, 2011 | 3 | 5:00 | Las Vegas, Nevada, US |
| Sieg | 9-0 | Javier Vazquez | Decision (unanimous) |  | WEC 52 | Nov 11, 2010 | 3 | 5:00 | Las Vegas, Nevada, US |
| Sieg | 8-0 | Cub Swanson | Decision (unanimous) |  | WEC 50 | Aug 18, 2010 | 3 | 5:00 | Las Vegas, Nevada, US |
| Sieg | 7-0 | Anthony Morrison | Submission (guillotine choke) | | WEC 48 | Apr 24, 2010 | 1 | 2:13 | Sacramento, California, US |
| Sieg | 6-0 | Erik Koch | Decision (unanimous) | | WEC 47 | Mar 06, 2010 | 3 | 5:00 | Columbus, Ohio, United States |
| Sieg | 5-0 | Mike Joy | Decision (unanimous) | | TPF 1 | Oct 08, 2009 | 3 | 5:00 | Lemoore, California, US |
| Sieg | 4-0 | Steven Siler | KO (punches) | | TPF 3 | Jul 16, 2009 | 1 | 0:44 | Lemoore, California, US |
| Sieg | 3-0 | Art Arciniega | Decision (unanimous) | | PFC 2 | Apr 23, 2009 | 3 | 3:00 | Lemoore, California, US |
| Sieg | 2-0 | Leland Gridley | TKO (punches) | | PFC | Feb 06, 2009 | 2 | 1:58 | Lemoore, California, US |
| Sieg | 1-0 | Giovanni Encarnacion | Submission (rear naked choke) | | PFC 10 | Aug 26, 2008 | 1 | 2:06 | Lemoore, California, US |
