New Delhi, Sept. 8 -- President Donald Trump attended the US Open men's final on Sunday, where he faced boos from the crowd at Arthur Ashe Stadium. His visit prompted enhanced security measures that delayed the match's start by 30 minutes.

Wearing a suit and a long red tie, Trump briefly emerged from his suite about 45 minutes before the match. He received a mix of cheers and boos, though the stadium was mostly empty at the time. He appeared again before the National Anthem, drawing louder boos after briefly smirking at the crowd while standing in salute.

After the anthem, Trump pointed to a small group of supporters seated nearby and watched the match from his suite balcony. He mostly refrained from applauding even during major points,...