Conor McGregor’s Comeback: A Tale of Banned Drugs and a Famous Doctor NYT - Top Stories By: Michael S. Schmidt 11 June 2026 at 10:00 McGregor, the Ultimate Fighting Championship’s main attraction, had the support of the prominent sports physician Neal ElAttrache when he decided to use performance-enhancing drugs. © John Locher/Associated PressConor McGregor preparing to fight Dustin Poirier in Las Vegas in 2021. McGregor suffered a badly broken leg during the bout.