Stamp Fairtex returns to face Cynthia Flores at The Inner Circle on June 26

She has not competed in Muay Thai since losing the atomweight title to Allycia Hellen Rodrigues in August 2020. Nearly six years later, Stamp Fairtex steps back into the discipline where her career began.

Stamp faces Mexican Muay Thai champion Cynthia Flores in a three-round atomweight Muay Thai bout at The Inner Circle, streaming live for members at live.onefc.com from Lumpinee Stadium in Bangkok, Thailand on Friday, June 26.

The 28-year-old Pattaya native is the only athlete in ONE Championship history to hold World Titles in Muay Thai, kickboxing, and MMA. A torn meniscus in May 2024 derailed her atomweight MMA reign before it began in earnest, eventually forcing her to relinquish the belt she had captured at ONE Fight Night 14 in September 2023.

She returned at ONE 173 last November in kickboxing, dropped a unanimous decision to Kana Morimoto, and now shifts discipline again heading into June.

Flores arrives with hard-won credentials from the North American regional circuit. The 31-year-old has faced two of ONE Championship’s top atomweight strikers in Martyna Dominczak and Tangtang Sor Dechapan, dropping close decisions in both, and has used those experiences to build the game needed to compete at the highest level. A win over Stamp would be the defining result of her career.

Stamp Fairtex returns to the discipline that made her a two-sport ONE World Champion

Stamp Fairtex claimed the inaugural ONE Women’s Atomweight Muay Thai World Title at ONE: CALL TO GREATNESS in February 2019, defeating Janet Todd via unanimous decision to add Muay Thai gold to the kickboxing belt she had already won. She defended it successfully four months later against Alma Juniku before a majority decision loss to Rodrigues ended her reign.

The Muay Thai chapter of her career closed that night. What followed was a full pivot to MMA, three world title attempts, one MMA world championship at ONE Fight Night 14, and two years of rehabilitation. June 26 reopens the chapter.