Brendan Allen has seven losses against six opponents on his MMA record. For a list of Allen's best fights, refer to "Best fights of Brendan Allen".
On February 22, 2025 Brendan Allen faced off against Anthony Hernandez in a middleweight bout at age 29. He was coming in with a record of 24-7 (19), and Hernandez was 31 years old and with a record of 13-2 (10). Allen lost the fight via 3-round unanimous decision.
On September 28, 2024 Brendan Allen faced off against Nassourdine Imavov in a middleweight bout at age 28. He was coming in with a record of 24-6 (19), and Imavov was 29 years old and with a record of 14-4 (10). Allen lost the fight via 3-round unanimous decision.
On December 4, 2021 Brendan Allen faced off against Chris Curtis in a middleweight bout at age 25. He was coming in with a record of 17-5 (14), and Curtis was 34 years old and with a record of 27-8 (16). Allen lost the fight via 2nd-round TKO.
On November 14, 2020 Brendan Allen faced off against Sean Strickland in a middleweight bout at age 24. He was coming in with a record of 15-4 (13), and Strickland was 29 years old and with a record of 21-3 (13). Allen lost the fight via 2nd-round TKO.
On January 26, 2018 Brendan Allen fought Anthony Hernandez in a middleweight title fight for the LFA Championship title. Allen was 22 years old and with a record of 8-3 (8), and Hernandez was 24 years old and with a record of 5-0 (5). Allen lost the fight via 5-round unanimous decision.
On June 23, 2017 Brendan Allen fought Eryk Anders in a middleweight title fight for Anders' LFA Championship title. Allen was 21 years old and with a record of 7-2 (7), and Anders was 30 years old and with a record of 7-0 (6). Allen lost the fight via 5-round unanimous decision.
On March 25, 2016 Brendan Allen faced off against Trevin Giles in a middleweight bout at age 20. He was coming in with a record of 2-1 (2), and Giles was 23 years old and with a record of 4-0 (4). Allen lost the fight via 2nd-round submission.
