Chatchai Sasakul has four losses against four opponents on his boxing record. For a list of Sasakul's best fights, refer to "Best fights of Chatchai Sasakul".
On August 30, 2008 Chatchai Sasakul fought Cristian Mijares in a super-flyweight world-title fight for Mijares' WBA (Super) and WBC titles. Sasakul was 38 years old and with a record of 62-4-1 (37), and Mijares was 26 years old and with a record of 35-3-2 (14). Sasakul lost the fight via 3rd-round TKO.
On December 12, 2005 Chatchai Sasakul faced off against Kuniyuki Aizawa at age 35. He was coming in with a record of 51-3-1 (32). Sasakul lost the fight via 10-round unanimous decision.
On December 4, 1998 Chatchai Sasakul met Manny Pacquiao in a flyweight (WBC) world-title defense fight. Sasakul was 28 years old and with a record of 32-2-1 (23), and Pacquiao was 19 years old and with a record of 23-1 (14). Sasakul lost the fight via 8th-round KO and lost the title.
On September 25, 1995 Chatchai Sasakul fought Yuri Arbachakov in a flyweight world-title fight for Arbachakov's WBC title. Sasakul was 25 years old and with a record of 20-1 (15). Sasakul lost the fight via 12-round unanimous decision.