Hiromasa Ougikubo has eight losses against six opponents on his MMA record. For a list of Ougikubo's best fights, refer to "Best fights of Hiromasa Ougikubo".
On July 30, 2023 Hiromasa Ougikubo fought Juan Archuleta in a bantamweight title fight for the Rizin Championship title. Ougikubo was 36 years old and with a record of 25-8-2 (6), and Archuleta was 35 years old and with a record of 28-4 (12). Ougikubo lost the fight via 3-round unanimous decision.
On December 31, 2022 Hiromasa Ougikubo faced off against Kyoji Horiguchi in a flyweight bout at age 35. He was coming in with a record of 25-7-2 (6), and Horiguchi was 32 years old and with a record of 30-5 (18). Ougikubo lost the fight via 3-round unanimous decision.
On September 25, 2022 Hiromasa Ougikubo faced off against Kim Soo-chul in a bantamweight bout at age 35. He was coming in with a record of 25-6-2 (6). Ougikubo lost the fight via 3-round unanimous decision.
On August 10, 2020 Hiromasa Ougikubo fought Kai Asakura in a bantamweight title fight for the Rizin Championship title. Ougikubo was 33 years old and with a record of 20-5-2 (6), and Asakura was 26 years old and with a record of 14-2 (10). Ougikubo lost the fight via 1st-round KO.
On July 28, 2018 Hiromasa Ougikubo faced off against Kyoji Horiguchi in a bantamweight bout at age 31. He was coming in with a record of 17-4-2 (6). Ougikubo lost the fight via 2-round unanimous decision.
On March 16, 2013 Hiromasa Ougikubo met Kyoji Horiguchi in a featherweight (Shooto Championship) title defense fight. Ougikubo was 25 years old and with a record of 10-3-2 (4), and Horiguchi was 22 years old and with a record of 9-1 (6). Ougikubo lost the fight via 2nd-round submission and lost the title.
On May 30, 2010 Hiromasa Ougikubo faced off against Eduardo Dantas in a featherweight bout at age 23. He was coming in with a record of 6-2-2 (3), and Dantas was 21 years old and with a record of 8-2 (4). Ougikubo lost the fight via 3rd-round submission.
On October 18, 2009 Hiromasa Ougikubo faced off against Koetsu Okazaki in a featherweight bout at age 22. He was coming in with a record of 6-1-2 (3), and Okazaki was 30 years old and with a record of 5-1-1 (0). Ougikubo lost the fight via 2nd-round TKO.
