Third-seeded Maria Sakkari outsted at US Open; Coco Gauff, 

Madison Keys set up third-round matchup

 The last two women’s champions were already out of the U.S.

Top players are falling fast in Flushing Meadows

with third-seeded Maria Sakkari  ousted 3-6

7-5, 7-5 by Wang Xiyu of China in the second round.

Emma Raducanu became only the third defending U.S.

Sakkari reached two Grand Slam semifinals