Brent Primus has five losses against five opponents on his MMA record. For a list of Primus's best fights, refer to "Best fights of Brent Primus".
On June 20, 2025 Brent Primus faced off against Alfie Davis in a lightweight bout at age 40. He was coming in with a record of 16-5 (11), and Davis was 33 years old and with a record of 18-5-1 (9). Primus lost the fight via 3-round unanimous decision.
On November 29, 2024 Brent Primus faced off against Gadzhi Rabadanov in a lightweight bout at age 39. He was coming in with a record of 15-4 (10), and Rabadanov was 31 years old and with a record of 23-4-2 (12). Primus lost the fight via 3rd-round KO.
On June 24, 2022 Brent Primus faced off against Alexandr Shabliy in a lightweight bout at age 37. He was coming in with a record of 11-3 (8), and Shabliy was 29 years old and with a record of 21-3 (17). Primus lost the fight via 2nd-round TKO.
On July 31, 2021 Brent Primus faced off against Islam Mamedov in a lightweight bout at age 36. He was coming in with a record of 10-2 (8). Primus lost the fight via 3-round split decision.
On December 14, 2018 Brent Primus met Michael Chandler in a lightweight (Bellator World Championship) title defense fight. Primus was 33 years old and with a record of 8-1 (6), and Chandler was 32 years old and with a record of 18-4 (12). Primus lost the fight via 5-round unanimous decision and lost the title.
