ONE Fight Night 50 Adds Reis-Oliveira and Flores-Morimoto
ONE Fight Night 50 on Prime Video, the promotion's last U.S. primetime card of 2026, has two new fights. Kana Morimoto makes her Muay Thai debut against Selina Flores, and Diogo Reis defends his grappling belt against Bebeto Oliveira.
Kana moves into Muay Thai
Kana “Krusher Queen” Morimoto is 34 and a former K-1 Champion. Muay Thai is new to her. In her last six kickboxing fights for ONE she traded wins and losses, and that run includes victories over Moa Carlsson and Stamp. She beat Yu Yau Pui in August.
The rules change her tools. Muay Thai brings elbows, knees and the clinch into play, and it is fought in 4-ounce gloves.
Flores arrives off a close loss
Selina “Teep Queen” Flores is 28 and a multi-time WBC Muay Thai World Champion. She came to ONE on a four-fight winning streak and stretched it to five against Marie McManamon in October 2025. Her second outing, at ONE Fight Night 47 in September, ended in a split decision loss to Stamp Fairtex after three rounds.
ONE's preview sketches the plan. Flores would like to hold Kana at the end of her range with teeps and win the exchanges on volume. Kana wants to close the gap.
Reis opens his title defense
Reis holds the ONE Flyweight Submission Grappling World Championship, and this is his first defense. He is a two-time ADCC World Champion. Oliveira is also Brazilian, so the pairing is all-Brazilian.
Reis took the belt in only his second ONE appearance. He opened with a kimura finish of Shoya Ishiguro, then went ten minutes against Daiki Yonekura. ONE named him its 2025 Submission Grappler of the Year. In May he moved up to bantamweight and beat Yuki Takahashi, which made him 3-0 in the promotion.
Oliveira, 32, is making his promotional debut. He is a world champion in the gi and without it, and his wins include IBJJF World Champions Edwin Ocasio, Paulo Miyao and Thalison Soares.
ONE says the match comes down to rhythm. Reis wants speed and chains passes into finishes. Oliveira is a bigger threat once the fight slows and he can pull the opponent into his guard, where sweeps and submissions come into play.
The card takes place on Friday, December 18, at Lumpinee Stadium in Bangkok.