Watch The Weigh-Ins And Hydration Tests For ONE Fight Night 38: Andrade Vs. Baatarkhuu

ONE Championship closes out its 2025 U.S. primetime calendar in spectacular fashion, as the world’s greatest martial artists prepare to step onto the scale for the final time this year for ONE Fight Night 38: Andrade vs. Baatarkhuu on Prime Video.

Before the curtain falls on the year’s U.S. primetime schedule this Friday, December 5, every competitor must successfully weigh in and pass their hydration tests to ensure they’re medically cleared and ready to perform at the highest level.

Fans can watch the official ONE Fight Night 38: Andrade vs. Baatarkhuu Weigh-Ins & Hydration Tests live by clicking the video below beginning at 5 a.m. ET/5 p.m. ICT on Thursday, December 4.

The card delivers ONE World Title fights on two fronts, features contenders battling it out for the next championship opportunities, and showcases legendary grapplers returning to competition in what promises to be an unforgettable year-end spectacle.

In the main event, undefeated ONE Bantamweight MMA World Champion Fabricio “Wonder Boy” Andrade puts his coveted belt on the line against Physical: Asia star “The Tormentor” Enkh-Orgil Baatarkhuu in a clash that could usher in a new era for Mongolian MMA.

The 28-year-old Brazilian has been unstoppable since entering ONE Championship in July 2020, dominating the competition and capturing the strap with a shocking finish over John Lineker in February 2023. Andrade proved he’s still operating at peak form when he knocked out Kwon Won Il just 42 seconds into their rematch this past January.

Andrade’s challenger represents one of the most inspiring stories in mixed martial arts. Baatarkhuu went from working the coal mines of Mongolia to the global stage under the tutelage of former ONE Featherweight MMA World Champion Narantungalag Jadambaa.

The 36-year-old Mongolian sensation earned his shot at glory by winning six of his last seven fights, including victories over Carlo Bumina-ang and #5-ranked Jeremy Pacatiw. Now, fresh off his Netflix appearance on Physical: Asia, “The Tormentor” has a chance to follow in his coach’s footsteps and become Mongolia’s next MMA World Champion.

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Before that, a new king will be crowned when the vacant ONE Flyweight Submission Grappling World Title is decided between Brazilian phenom Diogo “Baby Shark” Reis and Japan’s best kept secret Daiki Yonekura.

Reis, a two-time ADCC World Champion who trains under Melqui Galvao, is one of the most prominent names in submission grappling today. The 23-year-old black belt thrilled in his promotional debut this past March when he submitted surging Japanese talent Shoya Ishiguro, and now he looks to add ONE World Title gold to his already impressive resume.

Standing across from him is Yonekura, a 29-year-old homegrown Japanese grappler who has been making serious noise in the scene.

With 2024 victories at the ADCC Sydney Open, ADCC Vegas Open, and IBJJF Pan Pacific Championship, Japan’s top submission artist is primed for the biggest match of his career. Preparing alongside Lachlan Giles, Yonekura can shock the world and claim gold.

Check out the full card for ONE Fight Night 38 before the action begins at 9 p.m. ET/6 p.m. PT this Friday, December 5.

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Full Card For ONE Fight Night 38: Andrade Vs. Baatarkhuu

• (c) Fabricio Andrade vs. Enkh-Orgil Baatarkhuu (ONE Bantamweight MMA World Title)
• Diogo Reis vs. Daiki Yonekura (ONE Flyweight Submission Grappling World Title)
• Shadow Singha Mawynn vs. Enzo Kartoum (Muay Thai – featherweight)
• Phetjeeja Lukjaoporongtom vs. Martyna Dominczak (Muay Thai – women’s atomweight)
• Marcelo Garcia vs. Lachlan Giles (Submission Grappling – lightweight)
• Aliff Sor Dechapan vs. Ramadan Ondash (Muay Thai – strawweight)
• Dmitrii Kovtun vs. Shinji Suzuki (Muay Thai – bantamweight)
• Jeremy Miado vs. Avazbek Kholmirzaev (MMA – flyweight)

Source: ONE Championship