NEW YORK — President Donald Trump was loudly booed at the men's final of the U.S. Open on Sunday, where extra security caused by his visit led to lines long enough that many people missed the start of play, even after organizers delayed it.

What You Need To Know • President Donald Trump attended the U.S. Open on Sunday, drawing boos 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 fan

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