In the main event of ONE on Prime Video 15, Ilya Freimanov missed the opportunity to become the ONE Championship interim featherweight champion, losing to American Tan Lee with a heel twist at the 62nd second.
In the co-main event, Mansur Malachiev suffered the first defeat of his career, losing by unanimous decision to Joshua Pacio of the Philippines, while in the third event Timofey Nastyukhin was knocked out in the first round by Lipeng Zhang of China.
All results from ONE on Prime Video 15.