What Happened To His Knee?

Key Facts At A Glance

• Official result: Max Holloway def. Conor McGregor by TKO (injury), Round 1, 1:09
• Referee: Mike Beltran
• The moment: McGregor’s knee gave out landing a jumping scissor kick in the opening seconds
• Diagnosis: No official medical confirmation announced yet
• Layoff: First fight in five years, since the UFC 264 leg break in July 2021
• Event: UFC 329, T-Mobile Arena, Las Vegas

What Happened To Conor McGregor’s Knee?

McGregor opened the fight attempting a jumping kick. That decision will be scrutinized heavily in the coming days, weeks and even years. When he landed, his knee visibly gave beneath him.

No official diagnosis has been released. Broadcasters and reporters described it as an apparent “blown-out” knee, and that appears accurate on some level. UFC’s Joe Rogan seemed to break it down well here with slow-motion video.

However, until the UFC or McGregor’s camp confirms an actual injury, that remains an observation .

What is not in dispute is that the leg stopped working immediately. He could not plant, could not push off, and could not throw anything with his lead side. The Octagon surface seemed slippery in other fights as Robert Whittaker also appeared to have some issues with footing. It’ll be interesting to see if footing is mentioned as a potential factor.

How Did The Fight End?

McGregor tried to keep going, which made the sequence uglier. He slipped to the canvas twice while Holloway landed punches on a downed opponent, at one point looking around in confusion, unsure whether he should keep firing at an obviously compromised opponent.

Holloway actually asked Beltran whether the referee wanted to step in. The fight continued, and when they stood, Holloway threw a kick at the compromised leg. McGregor took an unsteady step back, winced, and Beltran waved it off at 1:09.

It sucked, but it was the right decision.

Holloway said afterward that he had been trying to get the fight called while McGregor kept asking to continue. The T-Mobile Arena crowd booed, and the main event that carried a five-year buildup was over before it started.

Has Conor McGregor Suffered A Knee Injury Before?

Here is the part that borders on cruel. McGregor tore his ACL during the first Holloway fight in 2013, gutted out three rounds on it, and still won a unanimous decision by out-wrestling a debuting Holloway.

Thirteen years later, the rematch he chased for years produced the same body part and the opposite outcome. The leg that made him has now betrayed him twice against the same man — and that is insane irony.

McGregor’s durability had already been questioned. This was his first fight since he broke his tibia against Dustin Poirier at UFC 264 in July 2021, an injury that cost him three years, and he is 37 with a body that has been through the rigors of combat sports training and life. It’s sad to think about, but many are wondering if this was the end.

Spinning Backfist posted this video of McGregor limping out of T-Mobile Arena.

What’s Next For Conor McGregor?

It’s too early to tell. However, popular sports medicine professional David Chao posted this preliminary diagnosis on X.

While Chao is often accurate with his initial assessment, everything depends on the official diagnosis, and that has not arrived. A serious ligament tear at 37, on a leg already rebuilt once, is the kind of injury that ends careers rather than pauses them. That’s the cold hard fact.

Holloway has already called for a third fight, telling the crowd there would be a McGregor-Holloway 3. In truth, that’s wishful think.

McGregor, for his part, had publicly floated fighting again in April 2027 before Saturday, and Dana White said this week he had multiple scenarios mapped for the Irishman. All of that has changed.

Those scenarios all assumed McGregor walked out of Las Vegas. He limped instead.