Exciting Showdown between Stamp Fairtex and Denice Zamboanga at ONE 173 in Denver
On August 1, 2025, the highly anticipated event of ONE 173 will take place at Ball Arena in Denver, Colorado. This marks a significant return for ONE Championship, the world’s largest martial arts organization, to the U.S. stage. One of the main attractions of the event is a title unification match between Stamp Fairtex, the reigning ONE Women's Atomweight MMA World Champion, and Denice Zamboanga, the Interim titleholder.
Stamp Fairtex made history by becoming the first athlete ever to hold championships in three different sports under the ONE Championship banner. She is known for her incredible knockout power and relentless fighting style, having earned her spot as the atomweight queen after a victorious bout against Ham Seo Hee. This will be her first defense of the Women’s Atomweight title since she won it. The matchup is incredibly exciting for fans, as it features not just champions but also former training partners turned rivals.
On the other side of the cage, Denice Zamboanga has established herself as a formidable contender in the MMA landscape. Known for her aggressive approach and sharp striking, Zamboanga earned her interim title by defeating Alyona Rassohyna in dominant fashion at ONE Fight Night 27. This fight against Stamp is not only a career milestone for her but also a chance to elevate the status of Philippine MMA on an international level.
Chatri Sityodtong, the Chairman and CEO of ONE Championship, expressed his enthusiasm about returning to Denver with such a high-profile event. He stated, “I am thrilled to announce that ONE Championship will be back at Ball Arena this August with one of our biggest events of the year. With Stamp Fairtex and Denice Zamboanga stepping into the Circle, fans should expect a stunning showdown.”
Both athletes have expressed their excitement leading up to the event. Fairtex reflected on her previous fight in the U.S., where she captivated fans with her talent. She remarked, “I was blown away by the support I received from all my U.S. fans at ONE Fight Night 10, and I can't wait to put on a show for them again this August at ONE 173.”
Zamboanga shared her thoughts on the upcoming bout, saying, “This fight against Stamp in the United States is a dream come true for me. Representing my country on such a grand stage fills me with immense pride, and I am ready to give my all to bring honor to our nation.”
Since its debut in the U.S., ONE Championship has shown significant potential in attracting crowds and generating economic impact. Their last event in Denver drew over 10,000 attendees and reportedly generated $18 million for the local economy. As they expand their footprint in North America, events like ONE 173 will be crucial for establishing their presence.
Fans can register now for exclusive presale tickets, which will become available beginning March 7 at 10 a.m. MT. This fight is expected to be a cornerstone for the night’s card, with additional exciting matchups set to be announced soon.
ONE Championship’s events showcase a wide array of martial arts disciplines, and the organization continues to reach millions of fans worldwide, making it one of the most engaging sports properties today. With a cumulative reach of over 400 million fans globally, events like ONE 173 promise not only thrilling entertainment but also a celebration of martial arts in all its forms. Mark your calendars and prepare for an unforgettable night of fights as Stamp and Zamboanga put everything on the line for the title in Denver. The anticipation is building, and fans won’t want to miss what’s set to be a historic card in the world of mixed martial arts.