NEW YORK (AP) — The Latest on the U.S. Open tennis tournament (all times EDT):
Serena Williams has taken the first set of her U.S. Open fourth-round match against Maria Sakkari by a 6-3 score.
Serena Williams and Maria Sakkari are on court in Arthur Ashe Stadium to warm up for their fourth-round meeting at the U.S. Open.
It is a rematch of a contest Sakkari won less than two weeks ago at the Western & Southern Open, a hard-court tournament played this year at Flushing Meadows.
Williams owns six U.S. Open titles and 23 Grand Slam singles championships in all.
Sakkari, a 25-year-old from Greece, is trying to reach her first Grand Slam quarterfinal.
The winner will face Alize Cornet or Tsvetana Pironkova next.
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