A post-surgery update from Conor McGregor. Conor McGregor’s return to the octagon was short-lived, as in the opening minute of his UFC 329 bout against Max Holloway, he went down with a knee injury, and the fight was ruled in Holloway’s favor. Taking to his Instagram Story, McGregor shared that he underwent surgery. He wrote:“Surgery went excellent. Before the Holloway fight, McGregor lost his last two MMA bouts, both to Dustin Poirier.