The world’s most electrifying martial artists are making their way back to the heart of the Rockies. On Friday, August 1, the global phenomenon ONE Championship will light up Ball Arena in Denver, Colorado, with its third monumental U.S. event — ONE 173: Denver. After two unforgettable nights in the States, this highly anticipated card promises another unforgettable evening of high-stakes combat, world-class talent, and pure adrenaline.
Who is fighting on ONE Championship in Denver?
At the heart of the action is a deeply emotional and compelling matchup: a ONE Women’s Atomweight MMA World Title unification bout that brings together not just two of the division’s most elite fighters — but two former best friends.
Stamp Fairtex, the reigning atomweight queen and one of the most dynamic athletes in the sport, is finally making her long-awaited return to the Circle. It’s been over a year since the Thai superstar last competed, her journey sidelined by a painful torn meniscus in May 2024. But now, fully recovered and hungry to reclaim her throne, she’s stepping back into battle with more fire than ever before.

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Waiting for her on the other side is none other than Denice Zamboanga, the current interim champion and once a trusted training partner and close companion of Stamp. Years ago, the pair sharpened their skills together at the Fairtex Training Center, bonding over drills, sparring sessions, and shared dreams of greatness.
Now, those dreams have put them on a collision course. Friendship will take a back seat as these two warriors throw down in what promises to be an emotionally charged, action-packed clash to determine who truly deserves the title of undisputed atomweight queen.
More explosive fights are set to be revealed in the coming weeks, featuring a lineup of elite international talent across MMA, Muay Thai, and submission grappling. With Denver once again playing host, fans can expect a night of unforgettable moments, breathtaking skill, and edge-of-your-seat drama.
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