Sirichai Thaiyen has five losses against five opponents on his boxing record. For a list of Thaiyen's best fights, refer to "Best fights of Sirichai Thaiyen".
On June 24, 2023 Sirichai Thaiyen faced off against Daigo Higa at age 32. He was coming in with a record of 65-5 (43). Thaiyen lost the fight via 4th-round KO.
On June 17, 2018 Sirichai Thaiyen fought Artem Dalakian in a flyweight world-title fight for Dalakian's WBA (Regular) title. Thaiyen was 27 years old and with a record of 50-4 (35), and Dalakian was 30 years old and with a record of 16-0 (11). Thaiyen lost the fight via 8th-round TKO.
On December 19, 2014 Sirichai Thaiyen fought Juan Carlos Reveco in a flyweight world-title fight for Reveco's WBA (Regular) title. Thaiyen was 23 years old and with a record of 34-3 (20). Thaiyen lost the fight via 5th-round TKO.
On April 21, 2010 Sirichai Thaiyen faced off against Sornsuknoi PKP Stereo at age 19. He was coming in with a record of 6-2 (5). Thaiyen lost the fight via 6-round points decision.
On September 25, 2009 Sirichai Thaiyen faced off against Veerawut Yuthimitr at age 18. He was coming in with a record of 3-1 (3). Thaiyen lost the fight via 6-round points decision.
