Martin Day has seven losses against seven opponents on his MMA record. For a list of Day's best fights, refer to "Best fights of Martin Day".
On April 30, 2022 Martin Day faced off against Ramon Taveras in a featherweight bout at age 33. He was coming in with a record of 8-7 (5). Day lost the fight via 1st-round submission.
On February 6, 2021 Martin Day faced off against Timur Valiev in a featherweight bout at age 32. He was coming in with a record of 8-6 (5), and Valiev was 31 years old and with a record of 16-2 (7). Day lost the fight via 3-round unanimous decision.
On November 28, 2020 Martin Day faced off against Anderson dos Santos in a bantamweight bout at age 32. He was coming in with a record of 8-5 (5), and Santos was 35 years old and with a record of 20-8 (15). Day lost the fight via 1st-round submission.
On July 12, 2020 Martin Day faced off against Davey Grant in a bantamweight bout at age 31. He was coming in with a record of 8-4 (5), and Grant was 34 years old and with a record of 9-4 (7). Day lost the fight via 3rd-round KO.
On November 24, 2018 Martin Day faced off against Liu Pingyuan in a bantamweight bout at age 30. He was coming in with a record of 8-3 (5), and Pingyuan was 25 years old and with a record of 14-4 (10). Day lost the fight via 3-round split decision.
On August 15, 2017 Martin Day faced off against Jaime Alvarez in a flyweight bout at age 28. He was coming in with a record of 5-2 (3). Day lost the fight via 3-round split decision.
On March 18, 2017 Martin Day faced off against Nohelin Hernandez in a bantamweight bout at age 28. He was coming in with a record of 4-1 (2). Day lost the fight via 2nd-round TKO.