ONE Championship Reveals Atomweight MMA World Title Fight, Rodrigues' MMA Debut

Japanese star Chihiro Sawada meets undefeated Canadian Anastasia Nikolakakos for the vacant ONE Women's Atomweight MMA World Title at ONE SAMURAI 6 on Wednesday, December 2. That show goes down live at Yokohama Buntai in Yokohama, Japan.

In a separate development, reigning ONE Women's Atomweight Muay Thai World Champion Allycia Hellen Rodrigues makes her highly anticipated MMA debut against French fighter Charlotte Padie at The Inner Circle 39 on Friday, November 20, from Lumpinee Stadium in Bangkok, Thailand. Both shows will stream on live.onefc.com.

The atomweight MMA landscape is about to be reshaped across two back-to-back events, and the results of both fights will define where the division heads in 2027.

Sawada Fights for History as Japan's First-Ever Women's ONE World Champion

Sawada has been building toward this moment across one of the most consistent careers in the atomweight MMA division.

The 28-year-old brings a 12-1 career MMA record and a 7-1 ONE Championship mark into the title fight, riding a four-bout winning streak that has firmly established her as the most credible Japanese women's MMA contender the division has produced.

Her wrestling-heavy approach and relentless takedown hunting have made her one of the most physically demanding opponents in the atomweight division, and her ability to dominate on the canvas once the fight hits the mat gives her a clear path to championship gold against virtually any opponent in this weight class.

A ONE World Title at Yokohama Buntai on December 2 would make Sawada the first-ever Japanese women's ONE World Champion, a distinction that carries the weight of an entire country's combat sports ambitions.

Nikolakakos Has Beaten All Her ONE Championship Opponents

Nikolakakos has been one of the most impressive new arrivals in the atomweight division since making her ONE Championship debut in March.

The 36-year-old Canadian carries a perfect 7-0 career record and a 2-0 ONE Championship mark, with both promotional victories coming against quality opposition.

She announced herself in the most emphatic way possible, knocking out Victoria Souza in the first round of her debut. Then, she defeated Malaysian veteran Jihin Radzuan in July to earn the title shot.

Two promotional appearances, two wins, and a world championship fight is one of the fastest tracks to a ONE World Title in the atomweight division's history.

Nikolakakos’ pristine 7-0 record and the finishing ability she demonstrated against Souza give her a legitimate case heading into Yokohama against a wrestler who will look to drag the fight to the mat from the opening bell.

Muay Thai Queen Rodrigues Makes Her MMA Debut

The most intriguing storyline surrounding the atomweight MMA division does not involve the title fight directly. Rodrigues, the reigning ONE Women's Atomweight Muay Thai World Champion, has been training for MMA for some time and teasing a debut that the division has been anticipating. November 20 at The Inner Circle 39 is where that debut finally arrives.

Rodrigues is one of the most accomplished strikers in ONE Championship's women's division. The 28-year-old Brazilian made her promotional debut by defeating then-champion Stamp Fairtex to claim the atomweight Muay Thai title in 2020, took a hiatus for the birth of her child, and returned in 2023 to unify the gold against Janet "JT" Todd.

Her 6-1 ONE Championship record across a 36-7 career striking mark reflects a champion who has been tested against the finest competition in the division and emerged with her belt intact.

Facing French fighter Charlotte Padie in her MMA debut gives Rodrigues an opportunity to establish herself in the new discipline, and the performance she produces on November 20 will shape how the atomweight MMA division views the Muay Thai champion's long-term intentions in the sport.