Here is a list of Kadowaki's best fights. For a list of Kadowaki's losses, refer to "Hideki Kadowaki Losses".
On March 28, 2008 Hideki Kadowaki fought Akitoshi Tamura in a lightweight title fight for Tamura's Shooto title. Kadowaki was 31 years old and with a record of 13-7-2 (6), and Tamura was 27 years old and with a record of 12-5-2 (4). Kadowaki won the fight via 3-round majority decision and is crowned the new lightweight world champion.
On September 22, 2007 Hideki Kadowaki faced off against Rumina Sato at age 31. He was coming in with a record of 12-7-2 (6), and Sato was 33 years old and with a record of 24-10-2 (17). Kadowaki stopped Rumina Sato via submission.
On October 18, 2016 Hideki Kadowaki faced off against Yuki Ohara in a featherweight bout at age 40. He was coming in with a record of 16-15-3 (7). Kadowaki won the fight via 2-round unanimous decision.
On December 14, 2003 Hideki Kadowaki faced off against Bao Quach at age 27. He was coming in with a record of 8-3-1 (5), and Quach was 24 years old and with a record of 6-5 (1). Kadowaki stopped Bao Quach via submission.
On March 11, 2005 Hideki Kadowaki faced off against Akitoshi Tamura at age 28. He was coming in with a record of 9-5-1 (5), and Tamura was 24 years old and with a record of 4-2-2 (1). Kadowaki won the fight via 2-round unanimous decision.
On September 5, 2003 Hideki Kadowaki faced off against Denisas Archirejevas at age 27. He was coming in with a record of 7-3-1 (4). Kadowaki stopped Denisas Archirejevas via submission.
On December 18, 2010 Hideki Kadowaki faced off against Yusuke Yachi in a lightweight bout at age 34. He was coming in with a record of 14-11-2 (6). Kadowaki won the fight via 2-round unanimous decision.
On January 19, 2001 Hideki Kadowaki faced off against Takuhito Hida at age 24. He was coming in with a record of 2-0 (1). Kadowaki won the fight via 2-round unanimous decision.
On May 4, 2003 Hideki Kadowaki faced off against Makoto Ishikawa at age 26. He was coming in with a record of 6-3-1 (3), and Ishikawa was 28 years old and with a record of 8-4 (2). Kadowaki won the fight via 3-round unanimous decision.
On November 12, 2000 Hideki Kadowaki faced off against Takashi Ohuchi at age 24. He was coming in with a record of 1-0 (1). Kadowaki stopped Takashi Ohuchi via submission.