Kohei Yasumi has seven losses against seven opponents on his MMA record. For a list of Yasumi's best fights, refer to "Best fights of Kohei Yasumi".
On September 8, 2006 Kohei Yasumi faced off against Ganjo Tentsuku at age 27. He was coming in with a record of 6-7-2 (2). Yasumi lost the fight via 1st-round TKO.
On November 12, 2004 Kohei Yasumi faced off against Jani Lax at age 25. He was coming in with a record of 6-6-2 (2), and Lax was 27 years old and with a record of 5-3 (4). Yasumi lost the fight via 2nd-round submission.
On July 4, 2004 Kohei Yasumi faced off against Yoichi Fukumoto at age 25. He was coming in with a record of 6-5-2 (2). Yasumi lost the fight via 3-round unanimous decision.
On January 24, 2004 Kohei Yasumi faced off against Kotetsu Boku at age 25. He was coming in with a record of 6-4-2 (2), and Boku was 26 years old and with a record of 5-3 (3). Yasumi lost the fight via 3-round unanimous decision.
On September 5, 2003 Kohei Yasumi faced off against Luiz Firmino at age 24. He was coming in with a record of 6-3-2 (2), and Firmino was 21 years old and with a record of 5-1 (3). Yasumi lost the fight via 3-round unanimous decision.
On September 7, 2002 Kohei Yasumi faced off against Yves Edwards at age 23. He was coming in with a record of 5-2-2 (1), and Edwards was 25 years old and with a record of 20-7-1 (18). Yasumi lost the fight via 1st-round KO.
On March 2, 2001 Kohei Yasumi faced off against Ryan Bow at age 22. He was coming in with a record of 3-1-2 (0). Yasumi lost the fight via 3-round unanimous decision.
