Dana White believes that McGregor tore his ACL in the fight against Holloway

After five years out of the Octagon, Conor McGregor’s return lasted barely a minute.

McGregor opened his Saturday bout against Max Holloway aggressively, attempting a running kick before landing a head kick moments later. However, he slipped both times because it was clear that he had suffered a knee injury.

He tried to power through it, but nearly two minutes into the fight, he grabbed his right leg again and referee Mike Beltran called the fight after just 69 seconds.

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In his first post on Instagram since the fight, McGregor promised to return from the injury.

“We’ll be back,” McGregor said after showing off his new energy drink.

Before that, McGregor showed off the drink “Mac” and enjoyed it with his wife. McGregor then shared his faith.

Conor McGregor of Ireland reacts after an injury stoppage in a welterweight bout during UFC 329 at T-Mobile Arena in Las Vegas, Nev., on July 11, 2026. (Chris Unger/Zuffa LLC)

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“In the name of the Father, and of the Son, and of the Holy Spirit. Amen. We’ll come back. Let’s go.”

McGregor made an emotional post the day after the fight, saying his “head gasket is gone.”

“Devastated. I had no injuries/injuries going into the fight. I was throwing kicks, planting and jumping, all the way through camp as well as backstage before the fight. This came out of nowhere. I’m beyond dark here. I can only describe it as hell,” he said on X.

UFC president Dana White said he assumed McGregor had suffered a “blown ACL.”

Conor McGregor kicks Max Holloway in a welterweight bout at UFC 329 on Saturday in Las Vegas. (John Locher/AP)

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McGregor was competing in his first fight since July 2021 when he lost to Dustin Poirier due to a devastating leg injury. He has only won one match since 2020.