Meghan Markle Sat Courtside at the U.S. Open to Cheer On Her Close Friend Serena Williams

The 2019 U.S. Open has come to an end at the USTA Billie Jean King National Tennis Center in Flushing Meadows, New York. Rafael Nadal and Bianca Andreescu each won U.S. Open singles titles after weeks of fierce competition. Thousands of visitors poured into the arena to see some of the most intense match-ups, including Meghan Markle and plenty of other notable celebrities. From royals and past tennis icons to Tony award winners, read on for everyone we spotted in the crowd at the U.S. Open.