Here is a list of Shirai's best fights. For a list of Shirai's losses, refer to "Yuya Shirai Losses".
On December 17, 2011 Yuya Shirai met Taisuke Okuno in a welterweight (DEEP Championship) title defense fight. Shirai was 31 years old and with a record of 22-10-1 (9), and Okuno was 34 years old and with a record of 11-5-2 (9). Shirai won the fight via 3-round unanimous decision and successfully defended his title.
On January 24, 2010 Yuya Shirai fought Seichi Ikemoto in a welterweight title fight for Ikemoto's DEEP Championship title. Shirai was 29 years old and with a record of 18-8-1 (8), and Ikemoto was 34 years old and with a record of 18-16-5 (11). Shirai won the fight via 3-round unanimous decision and is crowned the new DEEP welterweight champion.
On September 24, 2004 Yuya Shirai faced off against Mitsuyoshi Sato at age 24. He was coming in with a record of 5-0-1 (2). Shirai won the fight via 2-round majority decision.
On April 25, 2010 Yuya Shirai faced off against Che Mills in a welterweight bout at age 30. He was coming in with a record of 19-8-1 (9), and Mills was 27 years old and with a record of 9-3 (8). Shirai stopped Che Mills via submission.
On December 10, 2008 Yuya Shirai faced off against Yuichi Nakanishi at age 28. He was coming in with a record of 14-7-1 (6). Shirai won the fight via 3-round unanimous decision.
On March 14, 2009 Yuya Shirai faced off against Yoon Young Kim at age 28. He was coming in with a record of 15-7-1 (7). Shirai stopped Yoon Young Kim via submission.
On February 22, 2008 Yuya Shirai faced off against Sojiro Orui at age 27. He was coming in with a record of 12-5-1 (5). Shirai won the fight via 3-round unanimous decision.
On February 16, 2013 Yuya Shirai faced off against Yuki Okano in a welterweight bout at age 32. He was coming in with a record of 23-12-1 (9). Shirai won the fight via 2-round unanimous decision.
On August 5, 2007 Yuya Shirai faced off against Kozo Urita at age 27. He was coming in with a record of 11-5-1 (5). Shirai stopped Kozo Urita via submission.
On February 5, 2006 Yuya Shirai faced off against Tomoyoshi Iwamiya at age 25. He was coming in with a record of 7-3-1 (2). Shirai won the fight via 2-round unanimous decision.
