U.S. President Donald Trump attended the U.S. Open tennis match in New York on Sunday and got a mixed reaction from the crowd.

His presence delayed the men's final due to heightened security, causing long lines for many people who didn't make it in before play started. Trump briefly appeared before the event, receiving mixed reactions from the then-mostly empty Arthur Ashe Stadium. During the National Anthem, he was shown on the big screen, which increased the volume of boos. Boos got more intense later in the match. Organizers delayed the start to allow fans to pass through security. Trump attended as a guest of Rolex, despite imposing tariffs on Swiss products.

Trump later said that he didn't know what to expect, but that the fans were 'great.'