ONE 159: De Ridder vs. Bigdash was a Combat sport event held by ONE Championship on July 22, 2022, at the Singapore Indoor Stadium in Kallang, Singapore.A ONE Middleweight Championship bout between current champion Reinier de Ridder and former champion Vitaly Bigdash headlined the event. An interim ONE Muay Thai Women's Atomweight Championship bout between the ONE Kickboxing Atomweight World champion Janet Todd and Lara Fernandez was booked as the co-main event.[