ONE Championship 157: Petchmorakot vs. Vienot was a combat sports event produced by ONE Championship that was held on May 20, 2022, at the Singapore Indoor Stadium.

A ONE Flyweight World Championship rematch between current three-time champion Adriano Moraes and former UFC Flyweight Champion (also 2019 ONE Flyweight World Grand Prix Champion) Demetrious Johnson headlined the event. The pairing previously met at ONE on TNT 1 in April 2021 where Moraes defeated Johnson by KO in Round 2.

ONE Championship: Warriors Of Light was a Combat sport event held by ONE Championship on May 10, 2019 at the IMPACT Arena in Bangkok, Thailand. This event featured two world title fights for the ONE Muay Thai Bantamweight Championship Nong-O Gaiyanghadao vs. Hiroaki Suzuki as headliner and for the inaugural ONE Kickboxing Flyweight Championship Petchdam Gaiyanghadao vs. Elias Mahmoudi as co-headliner.