Eiji Mitsuoka has nine losses against nine opponents on his MMA record. For a list of Mitsuoka's best fights, refer to "Best fights of Eiji Mitsuoka".
On August 11, 2012 Eiji Mitsuoka faced off against Nik Lentz in a featherweight bout at age 36. He was coming in with a record of 18-9-2 (14), and Lentz was 27 years old and with a record of 21-5-2 (15). Mitsuoka lost the fight via 1st-round TKO.
On February 26, 2012 Eiji Mitsuoka faced off against Takanori Gomi in a lightweight bout at age 36. He was coming in with a record of 18-8-2 (14), and Gomi was 33 years old and with a record of 32-8 (17). Mitsuoka lost the fight via 2nd-round TKO.
On November 7, 2009 Eiji Mitsuoka faced off against Kazunori Yokota in a lightweight bout at age 33. He was coming in with a record of 16-7-2 (13), and Yokota was 31 years old and with a record of 11-2-3 (3). Mitsuoka lost the fight via 3-round unanimous decision.
On November 1, 2008 Eiji Mitsuoka faced off against Satoru Kitaoka in a lightweight bout at age 32. He was coming in with a record of 14-6-2 (11), and Kitaoka was 28 years old and with a record of 21-8-9 (11). Mitsuoka lost the fight via 1st-round submission.
On September 8, 2007 Eiji Mitsuoka faced off against Kotetsu Boku in a lightweight bout at age 31. He was coming in with a record of 11-5-2 (9), and Boku was 30 years old and with a record of 12-3-1 (4). Mitsuoka lost the fight via 3-round unanimous decision.
On February 4, 2006 Eiji Mitsuoka faced off against Vítor Ribeiro in a lightweight bout at age 30. He was coming in with a record of 7-4-2 (5), and Ribeiro was 26 years old and with a record of 13-1 (8). Mitsuoka lost the fight via 3-round unanimous decision.
On June 11, 2005 Eiji Mitsuoka faced off against Nick Agallar in a lightweight bout at age 29. He was coming in with a record of 6-3-2 (4). Mitsuoka lost the fight via 3-round unanimous decision.
On October 5, 2003 Eiji Mitsuoka faced off against Chris Brennan in a welterweight bout at age 27. He was coming in with a record of 5-2-1 (3), and Brennan was 31 years old and with a record of 15-9-1 (14). Mitsuoka lost the fight via 1st-round submission.
On July 20, 2002 Eiji Mitsuoka faced off against John Alessio in a welterweight bout at age 26. He was coming in with a record of 2-1-1 (1), and Alessio was 23 years old and with a record of 12-5 (10). Mitsuoka lost the fight via 2nd-round TKO.
