A multiple-time Muay Thai World Champion, Kongsak is widely considered one of the most feared southpaws in the world of Muay Thai today. However, before his stunning success, he came from humble beginnings, being born to a family of farmers in the Buriram province of Thailand.
At the urging of his father and famous uncle Changpuek Kiatsongrit, himself a legendary Muay Thai World Champion, Kongsak began training in Muay Thai at a local camp near his home at the age of 9. He went on to compile a stellar career over more than a decade, facing the top stars of his generation on the way to over 180 wins in the ring while becoming a Thai national champion, WMC World Champion, and three-time Lumpinee Stadium World Champion.
Kongsak joined the famed P.K.Saenchaimuaythaigym camp in 2013, relocating to Bangkok for greater opportunities. He has since continued to dominate against top opposition, and even ventured to Italy, Japan, and Spain to compete. Now, he is thrilled at facing the next challenge of his incredible career as he tests himself against the best strikers in the world in ONE Super Series.