Conor McGregor Faces Fifth Surgery Weeks After Disastrous UFC 329 Comeback

Mixed martial arts superstar Conor McGregor announced on social media on Monday, August 3, 2026, that he is undergoing the fifth surgery of his career to repair a torn ACL and meniscus in his right knee.

The devastating medical update comes just weeks after his highly anticipated return to the octagon ended in disaster, sidelining the superstar once again.

Key Takeaways

• Conor McGregor confirmed on August 3 that he will undergo the fifth surgery of his career to repair his right ACL and meniscus.
• The injury occurred in the opening seconds of his comeback fight against Max Holloway at UFC 329 on July 11.
• The bout ended in just 69 seconds, handing Max Holloway a technical knockout victory.
• Medical professionals expect a one-year recovery window, with McGregor targeting a return in mid-2027 for his final contracted fight.

A Comeback Cut Short in Las Vegas

The surgery stems from McGregor’s brief appearance at UFC 329, which took place at the T-Mobile Arena in Las Vegas on July 11, 2026. The welterweight main event against Max Holloway marked McGregor’s first bout in five years. The fighter, who has lost four of his past five bouts, previously underwent surgery for a broken leg suffered in 2021.

Nevertheless, the highly anticipated return ended almost immediately. Referee Mike Beltran stepped in to stop the fight just 69 seconds after the opening bell, declaring Max Holloway the winner by technical knockout. The injury occurred when McGregor attempted a jumping scissor kick and landed during the opening moments.

The Devastating Knee Injury

The fighter tore his right ACL and meniscus during the opening seconds of the bout. Furthermore, McGregor noted that this was the same injury he suffered in his 2013 bout against Holloway, though that occurrence affected his other leg. In a video posted on social media announcing his August procedure, McGregor casually told his followers, “What’s up folks, it’s ‘The Mac.’ Off to get surgery today.”

Meanwhile, the reality of the injury has been profoundly difficult for the athlete. Reflecting on the moment his knee gave out, McGregor posted a much more sombre message on July 12, the day after the event. He wrote,

“My head gasket is gone. Destroyed. I had no injury / injuries going into the fight. I was throwing kicks, planted and jumping, all throughout camp as well as backstage before the fight. This came out of nowhere. I am beyond dark here. I can only describe it as hell.”

A Lengthy Road to Recovery

With the physical damage now confirmed, the focus shifts to a rehabilitation process. UFC President Dana White, alongside medical professionals, expects McGregor’s knee surgery and subsequent recovery to keep him out of competition for approximately one year.

This timeline also puts his fighting career on a forced pause, requiring him to rebuild his strength and undergo extensive physiotherapy before he can step back into the octagon.

The Last Dance at International Fight Week

Despite the severity of his fifth major surgery, McGregor is already planning his next move. Ultimately, the fighter intends to return to UFC competition at International Fight Week in 2027 for a rematch against Max Holloway.

Crucially, McGregor currently has only one fight remaining on his UFC contract, making this projected 2027 appearance his definitive farewell under the current agreement. Outlining his long-term career plans in an Instagram post, McGregor declared, “What was to be a generational beating is now to be reset. IFW 2027. The Last Dance.”

FAQs

1. What was Conor McGregor’s injury?

Conor McGregor suffered a torn ACL and meniscus in his right knee during the opening moments of his comeback fight.

2. Who won the UFC 329 fight?

Max Holloway won the UFC 329 main event by technical knockout after the referee stopped the fight at 69 seconds due to McGregor’s injury.

3. How many surgeries has Conor McGregor had?

This procedure on his right knee will be the fifth surgery of Conor McGregor’s professional career.

4. When will Conor McGregor return to fighting?

Medical professionals expect a one-year recovery timeline, and McGregor plans to return for International Fight Week in 2027 for the final bout on his current contract.

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