ONE Fight Night 22

ONE Fight Night 22: Sundell vs. Diachkova was a combat sport event produced by ONE Championship that took place on May 4, 2024, at Lumpinee Boxing Stadium in Bangkok, Thailand.

Background
A ONE Women's Strawweight Muay Thai World Championship bout between current champion Smilla Sundell and Natalia Diachkova headlined the event. At the weigh-ins, Sundell came in at 126.5 lb (after coming in at 127.7 lb in for an unofficial check two and a half hours into the weigh-ins), 1.5 pounds over the strawweight limit for a title fight. As a result, Sundell was stripped of the title and only Diachkova was eligible to win it.

Former ONE Bantamweight Kickboxing Champion Hiroki Akimoto made his return after a 1-year and 5-month hiatus against former K-1 Lightweight Champion and promotional newcomer Wei Rui in a bantamweight kickboxing bout.

At the weigh-ins, Maurice Abévi weighed in at 174 pounds, four pound over the lightweight limit. His bout proceeded at catchweight and he was fined a percent of his purse which went to his opponent The Ultimate Fighter: China welterweight winner Zhang Lipeng.

Bonus awards
The following fighters received $50,000 bonuses.
 * Performance of the Night: Akbar Abdullaev