Conor McGregor has disclosed the extent of the knee injury he suffered during his brief UFC comeback fight against Max Holloway at UFC 329 on 11 July 2026 in Las Vegas. The Irish fighter, who lost the bout by technical knockout, said he found the diagnosis "quite shocking" after learning it involved multiple ligament and cartilage damage, adding a fresh setback to what was already a heavily scrutinised return to the octagon.

McGregor confirmed via a post on X that he had torn his ACL and meniscus, in what he described as the same injury he sustained to his other knee during his first fight against Holloway 13 years earlier. He noted the coincidence of suffering a mirrored injury in the opposite leg over a decade on, but said he is trying to remain positive despite the setback.