[5] Their second meeting took place at ONE: Century on October 13, 2019 in ONE Women's Atomweight World Championship bout, where Lee defended the title by submission in the fifth round.

[7] However, Allazov forced to withdraw due to an injury and was replaced by #5 ranked contender Tayfun Özcan who scheduled against former Glory Lightweight Champion Marat Grigorian in lead card and while Grigorian was booked to face Jamal Yusupov.

[8] In turn, Superbon and Yusupov withdrew from the event due to illness, so Özcan and Grigorian stepped back into the original pairing.

[9] The inaugural ONE Flyweight Submission Grappling World Championship bout between Mikey Musumeci and Cleber Sousa took place at the event.

Jihin Radzuan weighed in at 120.25 pounds, 5.25 lbs over the atomweight non-title fight limit.