ONE Fight Night 9

ONE Fight Night 9: Nong-O vs. Haggerty was a combat sports event produced by ONE Championship that took place on April 22, 2023, at Lumpinee Boxing Stadium in Bangkok, Thailand.

Background
A ONE Bantamweight Muay Thai World Championship bout between current champion Nong-O Gaiyanghadao and former ONE Flyweight Muay Thai World Champion Jonathan Haggerty headlined the event.

A strawweight bout between Bokang Masunyane and Hiroba Minowa took place at the event. The pairing was previously scheduled to meet at ONE 159, but the bout was scrapped due to Masunyane missed weight and Minowa rejecting a catchweight bout.

A bantamweight bout between Jhanlo Mark Sangiao and Matias Farinelli took place at the event. The pairing was previously scheduled to meet at ONE 164, but Farinelli has been removed from the card due to tested positive for COVID-19.

A bantamweight muay thai bout between Ferrari Fairtex and Felipe Lobo was scheduled for this event. However, due to Ferrari losing to Fabio Reis by knockout at ONE Friday Fights 4, he pulled out from the event and was replaced by Saemapetch Fairtex.

At weigh-ins, Han Zihao weighed in at 149.5 lbs, 4.5 lbs over the Bantamweight limit, and Asa Ten Pow, coming in at 145.25 lbs or .5 lbs over the limit, missed weight and their bout was renegotiated as a catchweight at 149.5 lbs. Matias Farinelli failed his hydration test and was forced to take a catchweight at 149.75 lbs.

Bonus awards
The following fighters were awarded bonuses.
 * Performance of the Night ($100,000): Jonathan Haggerty
 * Performance of the Night: Felipe Lobo, Isi Fitikefu and Jhanlo Mark Sangiao