ONE Championship: Full Blast May 28, 2021

The event was headlined by a bantamweight muay thai bout between Saemapetch Fairtex and the 2019 Lumpini Stadium 140lbs champion Kulabdam Sor.Jor.Piek-U-Thai. A flyweight bout between the promotional newcomer Kantharaj Shankar Agasa and the 7-fight ONE veteran Wei Xie was scheduled as the co-main event. A featherweight bout between Ahmed Faress and Edward Kelly was scheduled for the event.