Taiki Naito

RIZIN 12 live from the Aichi Prefectural Gymnasium in Nagoya, Japan, for the first time. The main event of the evening features the consensus No. 1 lightweight in RIZIN, Yusuke Yachi, taking on late-replacement opponent Luiz Gustavo. Yachi rides a six-fight winning streak into the ring following wins against UFC veterans Diego Nunes, Takanori Gomi and Daron Cruickshank. Gustavo comes in with a lengthy winning streak of his own into his promotional debut. Gustavo has stoppages in all eight of his professional wins.

The event will be headlined by a catchweight Muay Thai bout between Mongkolpetch Petchyindee Academy and former ONE Flyweight Kickboxing title challenger Elias Mahmoudi. A lightweight bout between Ben Wilhelm and Amarsanaa Tsogookhuu has been scheduled as the co-main event. A featherweight bout between Ma Jia Wen and Yoon Chang Min has been scheduled for the event. A flyweight kickboxing bout between Wang Wenfeng and Taiki Naito has also been scheduled for the event.

ONE Samurai 1 was a combat sports event produced by ONE Championship that took place on April 29, 2026, at Ariake Arena in Tokyo, Japan. An interim ONE Flyweight Kickboxing World Championship bout between Former ONE Flyweight Muay Thai World champion Rodtang Jitmuangnon and Former 3 Division K-1 Champion Takeru Segawa headlined the event.

ONE Friday Fights 55: Avatar vs. Nabati is a combat sports event produced by ONE Championship that took place on March 15, 2024, at Lumpinee Boxing Stadium in Bangkok, Thailand. A bantamweight muay thai bout between Avatar P.K.Saenchai and undefeated (19–0) Kiamran Nabati served as the event headliner.

ONE on Prime Video 3: Lineker vs. Andrade was a martial arts event that took place on Friday, October 21, 2022 at the Axiata Arena in Kuala Lumpur, Malaysia.

ONE Fight Night 24: Brooks vs. Balart was a combat sport event produced by ONE Championship that took place on August 3, 2024, at Lumpinee Boxing Stadium in Bangkok, Thailand. The event was headlined by an interim ONE Strawweight World Championship bout between former champion Jarred Brooks and Gustavo Balart. A ONE Women's Atomweight Submission Grappling World Championship bout between current champion Danielle Kelly and multiple-time IBJJF World Champion Mayssa Bastos took place at co-main event.

ONE Championship 157: Petchmorakot vs. Vienot was a combat sports event produced by ONE Championship that was held on May 20, 2022, at the Singapore Indoor Stadium.

ONE Fight Night 21: Eersel vs. Nicolas was a combat sport event produced by ONE Championship that took place on April 6, 2024, at Lumpinee Boxing Stadium in Bangkok, Thailand. A ONE Lightweight Kickboxing World Championship bout between current champion (also current ONE Lightweight Muay Thai World Champion) Regian Eersel and Alexis Nicolas headlined the event.

ONE Championship: Revolution was a Combat sport event held by ONE Championship on September 24, 2021 at the Singapore Indoor Stadium in Kallang, Singapore.

ONE Friday Fights 37: Bohic vs. Kacem was a combat sports event produced by ONE Championship that took place on October 20, 2023, at Lumpinee Boxing Stadium in Bangkok, Thailand. A bantamweight muay thai bout between former Lumpinee Stadium Welterweight (-147 lbs) world champion Rafi Bohic and Antar Kacem served as the event headliner.

ONE Friday Fights 26: Kulabdam vs. Bohic was a combat sports event produced by ONE Championship that took place on July 21, 2023, at Lumpinee Boxing Stadium in Bangkok, Thailand. A bantamweight muay thai bout between two-division Lumpinee Stadium world champion Kulabdam Sor.Jor.Piek-U-Thai and the current Lumpinee Stadium Welterweight (-147lbs) world champion Rafi Bohic served as the event headliner.

ONE Fight Night 32: Nakrob vs. Jaosuayai was a combat sports event produced by ONE Championship that took place on June 7, 2025, at Lumpinee Boxing Stadium in Bangkok, Thailand. A flyweight Muay Thai bout between Nakrob Fairtex and Jaosuayai Mor. Krungthepthonburi headlined the event

ONE Fight Night 37: Kryklia vs. Agdeve was a combat sports event produced by ONE Championship that took place on November 8, 2025, at Lumpinee Boxing Stadium in Bangkok, Thailand. An inaugural ONE Heavyweight Kickboxing World Championship bout between current ONE Heavyweight Muay Thai and Light Heavyweight Kickboxing World Champion Roman Kryklia and promotional newcomer Samet Agdeve headlined the event.