According to multiple sources, Rory McIlroy was involved in a heated argument with U.S. caddies during the 2023 Ryder Cup. After the eight Saturday matches concluded, McIlroy was caught on camera in the Marco Simone Golf and Country Club parking lot screaming at Justin Thomas caddie, Jim "Bones" Mackay about something. Presumably, his anger was over an incident that occurred about 30 minutes earlier on the 18th green involving Patrick Cantlays caddie, Joe LaCava. McIlroy was upset with Mackay, who took the brunt of his rant, and was restrained by fellow golfer Shane Lowry. The incident has caused a stir in the golfing world, with many reacting to McIlroys behavior.