Amnat Ruenroeng has six losses against six opponents on his boxing record. For a list of Ruenroeng's best fights, refer to "Best fights of Amnat Ruenroeng".
On November 23, 2021 Amnat Ruenroeng faced off against Wanchana Menayothin in a super-featherweight bout at age 41. He was coming in with a record of 21-6 (6). Ruenroeng lost the fight via 10-round unanimous decision.
On February 27, 2021 Amnat Ruenroeng faced off against Arnon Yupang in a featherweight bout at age 41. He was coming in with a record of 21-5 (6). Ruenroeng lost the fight via 10-round unanimous decision.
On August 1, 2020 Amnat Ruenroeng faced off against Srisaket Sor Rungvisai at age 40. He was coming in with a record of 20-4 (6), and Rungvisai was 33 years old and with a record of 47-5-1 (41). Ruenroeng lost the fight via 10-round unanimous decision.
On April 21, 2018 Amnat Ruenroeng faced off against Nawaphon Kaikanha in a super-flyweight bout at age 38. He was coming in with a record of 18-3 (6), and Kaikanha was 26 years old and with a record of 40-1-1 (32). Ruenroeng lost the fight via 5th-round TKO.
On November 21, 2017 Amnat Ruenroeng faced off against Wenfeng Ge in a super-flyweight bout at age 37. He was coming in with a record of 18-2 (6). Ruenroeng lost the fight via 12-round unanimous decision.
On May 25, 2016 Amnat Ruenroeng met John Riel Casimero in a flyweight (IBF) world-title defense fight. Ruenroeng was 36 years old and with a record of 17-1 (5), and Casimero was 27 years old and with a record of 21-3 (13). Ruenroeng lost the fight via 4th-round KO and lost the title.
