Brett McDermott (9-5, 8) was born in Cumbria, England on September 10, 1978. At the age of 34 years on March 9, 2013, he made his professional MMA debut against Thomas Denham, losing the fight via 2nd-round submission.
McDermott's last fight was a 1st-round TKO win against Tony Mustard at age 40 on September 7, 2019. He retired with a 2-fight winning streak.
Some of Brett McDermott's best fights have been against Oli Thompson.
McDermott has 5 losses on his MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
14 | Sep 7, 2019 40 years, 11 months 9-5 (8) | Tony Mustard | HW | 1 | TKO | WIN Punches | |
13 | May 12, 2017 38 years, 8 months 8-5 (7) | Ruben Wolf | HW | 2 | TKO | WIN Punches Won BAMMA World heavyweight title | |
12  | Feb 24, 2017 38 years, 5 months 7-5 (6) | 34 years, 4 months 11-1 (10) | Bellator | HW | 2 | TKO | LOSS Doctor stoppage |
11 | Sep 24, 2016 38 years 7-4 (6) | Dan Konecke | HW | 2 | TKO | WIN Punches | |
10 | Jul 9, 2016 37 years, 9 months 6-4 (5) | Kenneth Bergh | HW | 1 | SUB | LOSS Guillotine choke | |
9 | May 14, 2016 37 years, 8 months 6-3 (5) | Jamie Sloane | HW | 1 | KO | WIN Punch | |
8  | Dec 29, 2015 37 years, 3 months 5-3 (4) | 34 years, 11 months 16-4 (11) | Rizin | HW | 1 | KO | LOSS Punches |
7 | Nov 14, 2015 37 years, 2 months 5-2 (4) | Pelu Adetola | LHW | 1 | TKO | WIN Punches | |
6 | Apr 25, 2015 36 years, 7 months 4-2 (3) | Marcin Lazarz | LHW | 3 | UD | LOSS For BAMMA World light-heavyweight title | |
5  | Dec 6, 2014 36 years, 2 months 4-1 (3) | 34 years, 11 months 12-7 (11) | LHW | 1 | KO | WIN Punches | |
4 | Apr 26, 2014 35 years, 7 months 3-1 (2) | Paul Bennett | LHW | 1 | KO | WIN Punch | |
3 | Nov 30, 2013 35 years, 2 months 2-1 (1) | Shaun Lomas | LHW | 3 | UD | WIN | |
2 | Jul 6, 2013 34 years, 9 months 1-1 (1) | Jason Tyldesley | HW | 1 | TKO | WIN Punches | |
1 | Mar 9, 2013 34 years, 5 months 0-1 (0) | Thomas Denham | LHW | 2 | SUB | LOSS Rear-naked choke |
