Kun Khmer veteran Long Sophy has been added to the ONE FC Jakarta fight card. The 23-year-old will become the first Cambodian fighter in history to compete for a major international MMA promotion. ONE FC’s second foray into Indonesian territory is scheduled for Sept. 13 at the 15,000-capacity Istora Senayan Stadium. The undercard will feature Sophy taking on fellow debutant Max Metino in a featherweight fight. Kun Khmer, also known as Pradal Serey, can be traced back as far as the ninth century. It is the Cambodian equivalent of Muay Thai with televised fights taking place every single weekend in the capital city of Phnom Penh.