Conor McGregor's long-awaited comeback to mixed martial arts ended in humiliation and injury on Saturday night, as the Irish former two-weight world champion retired from his welterweight bout against Max Holloway just 69 seconds into the first round at UFC 329 in Las Vegas. The fight — the most hyped UFC return in recent memory — was stopped by referee Mike Beltran after McGregor fell to the mat three times in the opening minute, unable to continue.
The injury occurred when McGregor attempted a flying kick to open the contest but landed awkwardly, immediately damaging his right knee. He tried to push through for a few seconds before signalling to the referee that he could not go on. UFC president Dana White said the preliminary diagnosis pointed to a torn anterior cruciate ligament. "That's what I thought immediately when I saw it, and that's also the initial assessment from the doctors," White said — a verdict that would mean months of rehabilitation for a fighter who turns 38 this week.
It was a painful echo of McGregor's last outing: his July 2021 fight against Dustin Poirier, which also ended prematurely when he broke his tibia. That injury kept him out of the octagon for four years. A scheduled comeback against Michael Chandler in June 2024 was cancelled after McGregor broke a toe in training, and his return has been repeatedly delayed by a series of setbacks both inside and outside the sport. In late 2024, an Irish civil court jury found him liable for the rape of Nikita Hand in 2018, and in October 2025 he accepted an 18-month backdated ban for anti-doping "whereabouts failures" after missing three sample-collection attempts in 2024 — a ban that expired in March.
Holloway, a former featherweight champion from Hawaii, said he had repeatedly asked the referee to stop the fight once it became clear McGregor was hurt, even as McGregor himself was reportedly still shouting to continue. Despite the abrupt ending, Holloway was eager for a rematch once his opponent recovers. "So much hype for that right there. We've got to run it back one more time — one more time for the boys," he said. The two fighters previously met in 2013, with McGregor winning by unanimous decision.
The anticlimactic result raises serious questions about McGregor's future in elite combat sports, with a lengthy rehabilitation now ahead of him and his career having been disrupted by injury and controversy for the better part of four years. In the co-main event at Las Vegas's T-Mobile Arena, British lightweight Paddy Pimblett also wasted little time, choking out France's Benoit Saint-Denis in under a minute to claim his own highlight of the night.