Khunpon Aekmuangnon and Wanchainoi win at ONE Friday Fights 166

Khunpon Aekmuangnon and Wanchainoi Pongsuphan PK emerged victorious in the headline bouts of ONE Friday Fights 166 and The Inner Circle. Aekmuangnon defeated Panpadej Looksuan in a flyweight Muay Thai contest. In the strawweight main event for The Inner Circle, Wanchainoi Pongsuphan PK beat Petnamkhong Sor Maneekhot.

One of the unsigned winners from the night was eligible to secure a $100,000 U.S. ONE Championship contract. The event took place at the Lumpinee Stadium in Bangkok, Thailand, on Friday, August 14, 2026.

The Muay Thai card included several notable matchups. Denkriangkrai Mavinn Muaythai faced Abdessamie Rhenimi, while Pet Sitchalongsak took on Sompongchai Sit Dr.Charnchai. Aidangkoeychai Sitkaewprapon competed against Saipetlek Rongsamak Orborjor Udon Thani. Chamanow Santiubon met Babak Haghi, and Gingsanglek Wor Kumchamnarn fought Dmitri Ramos. Petkhaokradong Lukjaomaesaithong faced Vadzim Shapiatsiuk, and Bakjo Sitkhunma took on Petsuphan Por Prajansi. Nongnuk Sor Dechapan also competed against Saya Ito.

In the kickboxing and MMA divisions, Arthur Klopp faced Gabriel Pereira. The MMA bouts featured Batochir Batsaikhan against Mirmehti Miriyev and Chi Lu Lee against Kenya Yamada.

In the Muay Thai division, Nongfahsai Pooksuphan PK also competed against Zeynep Cetintas. The event was broadcast via YouTube for international viewers, while The Inner Circle fights were hosted on the ONE Championship website.