Shozo Isojima

ONE Samurai 4 was a kickboxing, Muay Thai, and MMA event held by ONE Championship on Saturday, October 17, 2026, at Ariake Arena in Tokyo, Japan. In the main event, Jonathan Haggerty faced Hiroki Akimoto for the ONE Bantamweight Kickboxing World Championship, while Nadaka Yoshinari took on Rifdean Masdor for the Atomweight Muay Thai World Championship in the co-main event. The card also featured Masaaki Noiri vs. Mohammad Siasarani, Marat Grigorian vs. Luo Chao, and Rukiya Anpo vs. Bogdan Shumarov, and the event doubled as the night ONE Championship inducted Takeru Segawa into its Hall of Fame.

ONE Fight Night 36: Prajanchai vs. Di Bella 2 was a combat sports event produced by ONE Championship that took place on October 4, 2025, at Lumpinee Boxing Stadium in Bangkok, Thailand. A rematch of ONE Strawweight Kickboxing World Championship unification bout between current champion (also a current ONE Strawweight Muay Thai World Champion) Prajanchai P.K.Saenchai and interim champion Jonathan Di Bella headlined the event.

ONE 173: Superbon vs. Noiri was a combat sports event produced by ONE Championship that took place on November 16, 2025, at the Ariake Arena in Tokyo, Japan. A ONE Featherweight Kickboxing World Championship unification bout between current two-time champion Superbon Singha Mawynn and interim champion (also a former K-1 Super Lightweight and Welterweight Champion) Masaaki Noiri headlined the event.

ONE Fight Night 40: Buntan vs. Hemetsberger 2 was a combat sports event produced by ONE Championship that took place on February 14, 2026, at Lumpinee Boxing Stadium in Bangkok, Thailand. A ONE Women's Strawweight Kickboxing World Championship bout between current Champion Jackie Buntan and current ONE Women's Strawweight Muay Thai World Champion Stella Hemetsberger headlined the event. The pairing previously met at ONE Fight Night 35 in September 2025, where Hemetsberger captured the vacant title by unanimous decision.