Kazuhiro Hamanaka has seven losses against seven opponents on his MMA record. For a list of Hamanaka's best fights, refer to "Best fights of Kazuhiro Hamanaka".
On October 25, 2009 Kazuhiro Hamanaka faced off against Shunsuke Inoue at age 31. He was coming in with a record of 5-7-1 (3). Hamanaka lost the fight via 1st-round TKO.
On April 29, 2009 Kazuhiro Hamanaka faced off against Karl Amoussou at age 30. He was coming in with a record of 4-6-1 (3), and Amoussou was 23 years old and with a record of 9-2-1 (8). Hamanaka lost the fight via 1st-round KO.
On June 1, 2007 Kazuhiro Hamanaka faced off against Matt Horwich at age 28. He was coming in with a record of 4-5-1 (3), and Horwich was 29 years old and with a record of 19-10-1 (18). Hamanaka lost the fight via 1st-round KO.
On March 17, 2007 Kazuhiro Hamanaka faced off against Jeremy Williams at age 28. He was coming in with a record of 4-4-1 (3). Hamanaka lost the fight via 1st-round TKO.
On September 9, 2006 Kazuhiro Hamanaka faced off against Alex Schoenauer at age 27. He was coming in with a record of 4-3-1 (3). Hamanaka lost the fight via 1st-round submission.
On November 5, 2005 Kazuhiro Hamanaka faced off against Wilson Gouveia at age 27. He was coming in with a record of 2-2-1 (1), and Gouveia was 27 years old and with a record of 5-3 (4). Hamanaka lost the fight via 1st-round TKO.
On October 5, 2003 Kazuhiro Hamanaka faced off against Ryan Gracie at age 24. He was coming in with a record of 1-1 (0), and Gracie was 29 years old and with a record of 2-2 (1). Hamanaka lost the fight via 1st-round TKO.