Here is a list of Kotani's best fights. For a list of Kotani's losses, refer to "Naoyuki Kotani Losses".
On March 9, 2012 Naoyuki Kotani faced off against Ryuki Ueyama at age 30. He was coming in with a record of 26-10-7 (22), and Ueyama was 35 years old and with a record of 11-13-5 (7). Kotani stopped Ryuki Ueyama via TKO.
On February 15, 2002 Naoyuki Kotani faced off against Yoshinobu Ota at age 20. He was coming in with a record of 6-0-1 (4), and Ota was 29 years old and with a record of 3-3-1 (0). Kotani stopped Yoshinobu Ota via choke-out.
On July 4, 2004 Naoyuki Kotani faced off against Remigijus Morkevicius at age 22. He was coming in with a record of 13-2-2 (9), and Morkevicius was 21 years old and with a record of 8-2 (8). Kotani stopped Remigijus Morkevicius via submission.
On September 12, 2004 Naoyuki Kotani faced off against Hideo Tokoro at age 22. He was coming in with a record of 14-2-2 (10), and Tokoro was 27 years old and with a record of 12-8-1 (10). Kotani stopped Hideo Tokoro via submission.
On September 5, 2000 Naoyuki Kotani faced off against Kiyohito Sugata at age 18. He was coming in with a record of 1-0 (1). Kotani stopped Kiyohito Sugata via TKO.
On February 23, 2014 Naoyuki Kotani faced off against Yoshihiro Koyama at age 32. He was coming in with a record of 33-10-7 (27). Kotani won the fight via 3-round unanimous decision.
On September 4, 2011 Naoyuki Kotani faced off against Katsuya Inoue at age 29. He was coming in with a record of 24-10-7 (20). Kotani stopped Katsuya Inoue via submission.
On September 21, 2001 Naoyuki Kotani faced off against Hideo Tokoro at age 19. He was coming in with a record of 4-0-1 (3), and Tokoro was 24 years old and with a record of 3-4 (3). Kotani won the fight via 3-round majority decision.
On September 5, 2000 Naoyuki Kotani faced off against Tashiro Nishiuchi at age 18. He was coming in with a record of 2-0 (2). Kotani stopped Tashiro Nishiuchi via submission.
On October 5, 2013 Naoyuki Kotani faced off against Daisuke Hoshino at age 31. He was coming in with a record of 32-10-7 (27). Kotani stopped Daisuke Hoshino via submission.
