ONE Fight Night 39: Rambolek vs. Dayakaev was a combat sports event produced by ONE Championship that took place on January 24, 2026, at Lumpinee Boxing Stadium in Bangkok, Thailand. A bantamweight Muay Thai bout between Rambolek Chor.Ajalaboon and Abdulla Dayakaev headlined the event.

ONE Fight Night 42: Mann vs. Dzhabrailov was a combat sports event produced by ONE Championship that took place on April 11, 2026, at Lumpinee Boxing Stadium in Bangkok, Thailand. A Welterweight bout between Chase Mann and Dzhabir Dzhabrailov headlined the event.