Olivier Aubin-Mercier has five losses against five opponents on his MMA record. For a list of Aubin-Mercier's best fights, refer to "Best fights of Olivier Aubin-Mercier".
On July 27, 2019 Olivier Aubin-Mercier faced off against Arman Tsarukyan in a lightweight bout at age 30. He was coming in with a record of 11-5 (9), and Tsarukyan was 22 years old and with a record of 13-2 (10). Aubin-Mercier lost the fight via 3-round unanimous decision.
On December 8, 2018 Olivier Aubin-Mercier faced off against Gilbert Burns in a lightweight bout at age 29. He was coming in with a record of 11-4 (9), and Burns was 32 years old and with a record of 13-3 (11). Aubin-Mercier lost the fight via 3-round unanimous decision.
On July 28, 2018 Olivier Aubin-Mercier faced off against Alexander Hernandez in a lightweight bout at age 29. He was coming in with a record of 11-3 (9), and Hernandez was 25 years old and with a record of 9-1 (6). Aubin-Mercier lost the fight via 3-round unanimous decision.
On January 30, 2016 Olivier Aubin-Mercier faced off against Carlos Diego Ferreira in a lightweight bout at age 26. He was coming in with a record of 7-2 (6), and Ferreira was 31 years old and with a record of 11-2 (7). Aubin-Mercier lost the fight via 3-round unanimous decision.
On April 16, 2014 Olivier Aubin-Mercier faced off against Chad Laprise in a welterweight bout at age 25. He was coming in with a record of 4-1 (4), and Laprise was 27 years old and with a record of 7-0 (5). Aubin-Mercier lost the fight via 3-round split decision.