ONE Championship: Bad Blood was a Combat sport event held by ONE Championship on February 11, 2022 at the Singapore Indoor Stadium in Kallang, Singapore. Bibiano Fernandes was scheduled to make his second ONE bantamweight title defense against John Lineker in the main event. However, Lineker tested positive for COVID days before the event and the bout was pulled. The interim Heavyweight title fight between the Russian Anatoly Malykhin and the Belarusian Kiril Grishenko was promoted to the main event.

The event will be headlined by a catchweight Muay Thai bout between Mongkolpetch Petchyindee Academy and former ONE Flyweight Kickboxing title challenger Elias Mahmoudi. A lightweight bout between Ben Wilhelm and Amarsanaa Tsogookhuu has been scheduled as the co-main event. A featherweight bout between Ma Jia Wen and Yoon Chang Min has been scheduled for the event. A flyweight kickboxing bout between Wang Wenfeng and Taiki Naito has also been scheduled for the event.