According to the search results, there was a bust-up between Rory McIlroy and Patrick Cantlays caddie, Joe LaCava, on the 18th green during the afternoon Fourballs matches at the Ryder Cup golf tournament at the Marco Simone Golf Club in Guidonia Montecelio, Italy, on September 30, 2023. McIlroy accused LaCava of waving his hat, which angered him. McIlroy and Matt Fitzpatrick lost their Ryder Cup match to Patrick Cantlay and Wyndham Clark on the 18th hole, and NBC footage showed McIlroy screaming at someone while caddie Jim "Bones" Mackay was standing close by. McIlroy shouted, "This cant happen. This cant happen. Its a f---ing disgrace". The incident in the parking lot likely spilled over from the U.S. teams celebration on the 18th green, and a British media report suggested that the U.S. team was fractured, with Cantlay being one of the reasons because of his displeasure with American players not being paid to compete in the Ryder Cup. Many European fans mocked Cantlay during Saturday afternoons match by waving their hats at him, and Cantlay made birdies on three consecutive holes to help defeat McIlroy and Fitzpatrick, including a 43-footer on the 18th hole to win the match. After Cantlay made the final putt, he pretended to tip a hat to the crowd, and other American players, caddies, and team members waved their hats to European fans as well. LaCava had words with European players Shane Lowry and Justin Rose on the 18th green as well. However, Rory McIlroy said that two heated rows with American caddies left him wanting to "make it hurt" for Team USA, as Europe channeled rage to win the Ryder Cup. In the end, Team Europe won the 2023 Ryder Cup in Rome, with McIlroy contributing a tournament-best four points as the hosts held off a spirited fightback to run out 16.5 - 11.5 winners and trigger euphoric celebrations on the 18th green at Marco Simone Golf Club.