Combat Sports Injury Report: Stamp Fairtex Relinquishes ONE Title as Tyson and Pettis Face Summer Setbacks

The mid-summer combat sports schedule has undergone a massive reshuffle, with a wave of training camp injuries forcing major promotions to scramble for replacements and redraw their championship pictures. The most significant structural shift occurred within ONE Championship, where atomweight MMA world champion Stamp Fairtex has officially relinquished her title. The Thai superstar, who has not competed since capturing the belt in September 2023, encountered a severe setback in her recovery from a prior knee surgery. Unable to safely prepare for her scheduled unification bout, Stamp opted to vacate the throne to focus entirely on her physical rehabilitation, fundamentally altering the promotion's summer plans.[1][2]

Stamp's withdrawal triggered a domino effect for ONE Championship's highly anticipated return to the United States. The promotion was slated to host ONE 173 at Ball Arena in Denver, Colorado, in August, with Stamp defending her title against interim champion Denice Zamboanga. With the headliner scrapped and alternative title fights failing to materialize, ONE executives made the difficult decision to postpone the Denver event entirely, pushing it to June 2026. In the interim, Zamboanga has been elevated to the status of undisputed atomweight champion, while fans who purchased tickets for the Colorado card have been offered full refunds as the promotion regroups.[1][2]

In the boxing world, a highly publicized exhibition clash between legends Mike Tyson and Floyd Mayweather has been delayed after Tyson suffered a broken hand during a sparring session. The bout, which had been targeted for a late-May date under the CSI Sports and Fight Sports banners, has now been officially pushed to the fall of 2026. Representatives for the 59-year-old Tyson confirmed that the former heavyweight king is currently recovering in a cast but is healing smoothly. Tyson's camp emphasized that the delay is merely a short postponement, and the fighter fully intends to honor the contract and step into the ring with Mayweather once he is medically cleared to punch at full power.[1][3]

The Professional Fighters League (PFL) is also navigating a depleted roster ahead of its Austin, Texas event at the Moody Center, following the dual withdrawals of Sergio Pettis and Levy Saul Marroquin. Pettis, a marquee addition to the PFL roster, was forced to pull out of the co-main event due to an undisclosed injury suffered in the final weeks of his training camp. His sudden exit threatened to derail a highly anticipated bantamweight clash, but the promotion quickly secured Rafael do Nascimento to step in on short notice. Do Nascimento will now face 2024 PFL Europe bantamweight champion Lewis McGrillene-Evans in a high-stakes bout that could instantly propel the newcomer into the global divisional rankings.[4]

The PFL's matchmaking hurdles in Austin did not end with Pettis. Levy Saul Marroquin was also pulled from the July card due to physical setbacks, leaving Joey Ruquet without a dance partner just days before the fighters were scheduled to make the walk. In a massive stroke of luck for the promotion, former PFL featherweight champion Jesus Pinedo agreed to step in on short notice to keep Ruquet on the card. The 145-pound main card clash now serves as a testament to the chaotic nature of modern mixed martial arts, where a devastating injury for one fighter instantly becomes a career-defining opportunity for a former champion looking to reclaim his spot in the spotlight.[4]

The UFC faced its own late-notice scramble ahead of the blockbuster UFC 329 card in Las Vegas, losing a highly anticipated bantamweight preliminary bout when Ethyn Ewing was forced to withdraw due to injury. Ewing, a former bantamweight champion for Urijah Faber's A1 Combat promotion, had built significant momentum in the Octagon by handing two undefeated fighters their first professional losses. He was slated to face the unbeaten Farid Basharat in what many analysts viewed as a potential Fight of the Night candidate. The exact nature of Ewing's injury has not been disclosed, but the withdrawal temporarily halts the 28-year-old's rapid ascent through the UFC's 135-pound ranks.[1]

Beyond the MMA and boxing realms, ONE Championship's elite Muay Thai division also took a hit when Filipino-American striker Sean Climaco suffered a severe foot injury. Climaco was scheduled to face rising teenage sensation Johan Ghazali at ONE Fight Night 39 inside Bangkok's legendary Lumpinee Stadium. Ghazali has been riding a wave of momentum following an electrifying first-round technical knockout victory over Zakaria El Jamari, and the bout with Climaco was expected to be a fiery striking showcase. Instead, Climaco's withdrawal means fans will have to wait to see the dynamic matchup, as ONE officials opted to remove the bout from the card entirely rather than find a short-notice replacement for the dangerous Ghazali.[5]

This recent string of withdrawals underscores the brutal physical toll of combat sports, where the intensity of training camps often rivals the fights themselves. While the loss of stars like Stamp Fairtex and Mike Tyson temporarily deprives fans of blockbuster matchups, the reshuffled cards highlight the deep talent pools required to keep global promotions running. For late replacements like Jesus Pinedo and Rafael do Nascimento, these injuries represent a golden ticket—a chance to bypass the traditional matchmaking queue and secure massive victories under the brightest lights. As the injured stars begin their respective rehabilitation processes, the combat sports world moves forward, entirely reliant on the fighters willing to step up when the original plans fall apart.[1][4]