Rae Yoon Ok has walked through fire before. He has been doubted, overlooked, injured, and pushed to the edge of retirement. He has also stood at the very top of the mountain, holding the ONE Lightweight World Title after defeating Christian Lee in one of the most shocking upsets in the promotion’s history. Now, on June 26, 2026, inside the legendary Lumpinee Stadium in Bangkok, Ok steps into the co main event of ONE Fight Night 44 against Lucas Gabriel, a dangerous Brazilian contender who has not tasted defeat since 2019.
For Ok, this fight is not just another booking. It is a chance to reclaim momentum. It is a chance to remind the world who he is. And it is a chance to begin the long climb back toward the gold he once held.
The Rise of Rae Yoon Ok
Before he became a world champion, Ok was a taekwondo standout with explosive athleticism and a competitive spirit that carried him through high school and into university. But it was during his mandatory military service that he discovered mixed martial arts. At twenty three years old, he believed he was too late to chase a professional career. He trained for fun, not for glory.
Then the talent surfaced. Then the passion took over. Then the path changed.
His first amateur fight ended in defeat. Most fighters would have walked away. Ok did the opposite. He treated the loss as fuel, returned to the gym, and rattled off four straight wins. By 2014, he turned professional and began building one of the most resilient careers in Korean MMA.
Money was tight. Injuries piled up. A hand injury nearly forced him to quit. But Ok pushed through every setback, eventually compiling a 13 and 3 record before joining ONE Championship in 2021.
What followed was one of the most impressive three fight stretches in ONE history. He defeated former champion Marat Gafurov. One week later, he beat UFC legend Eddie Alvarez. Then he shocked the world by defeating Christian Lee to become the ONE Lightweight World Champion.
Ok’s rise was meteoric. His fall was sudden. In their rematch, Christian Lee reclaimed the belt with a TKO by knees in the second round. Since then, Ok has alternated wins and losses, searching for the consistency that once defined him.
ONE Fight Night 44 is his chance to find it again.
Lucas Gabriel: The Brazilian Threat
Standing across from Ok is Lucas Gabriel, a welterweight from Curitiba, Brazil, now training out of Phuket Fight Club in Thailand. Gabriel brings a 10 and 1 professional record and a reputation for suffocating grappling and dangerous submissions. He has not lost since 2019, and his rise through ONE’s welterweight ranks has been steady and disciplined.
Gabriel is not a fighter who gives opponents time to breathe. He pressures early, chains takedowns together, and forces scrambles that break rhythm and drain energy. For a striker like Ok, this matchup demands precision, footwork, and the ability to stay composed under constant threat.
A Crucial Moment for Ok
This fight is more than a co main event slot. It is a crossroads. Ok has the experience, the championship pedigree, and the technical depth to beat anyone in the division. But he also knows that opportunities at the top are not infinite. A win over Gabriel puts him back in the conversation for major fights. A loss pushes him further from the title picture.
Ok’s strengths remain clear. His boxing is sharp. His timing is elite. His ability to read opponents and adjust mid fight is one of the reasons he defeated Christian Lee the first time. But Gabriel brings a style that forces fighters to make decisions under pressure, and Ok will need to be disciplined from the opening bell.
The Stage: ONE Fight Night 44
ONE Fight Night 44 takes place at the iconic Lumpinee Stadium in Bangkok, Thailand, on Friday, June 26, 2026 at 9 PM Eastern Time on Amazon Prime. The event is headlined by George Jarvis against R. Sitsongpeenong, with Ok and Gabriel serving as the co main event.
The rest of the card features Bampara Koyate against Charlie Guest, Karen Ghazaryan against Hisashi Ezaki, Nakrob Fairtex against Jacob Smith, Ferrari Fairtex against Shinji Suzuki, and Paul Elliot against Regan Upshaw. It is a card built on striking, global talent, and high stakes.
But the emotional center of the night belongs to Rae Yoon Ok.
What This Fight Means
For Ok, this is a chance to prove that the champion who shocked the world in 2021 is still here. It is a chance to show that the setbacks did not break him. It is a chance to begin the climb back toward the belt he once held with pride.
For Gabriel, this is the biggest opportunity of his career. A win over a former world champion would launch him into the spotlight and establish him as a real contender in ONE’s welterweight division.
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