For six-times champion Williams, who is seeking
her first Grand Slam title since becoming a mother last
September, this may be her toughest test yet in New York as the
Czech eighth seed has rediscovered the form that took her to the
Williams, who is three wins away from securing a record-
equaling 24th Grand Slam title, survived a scare in her previous
match when she needed three sets to dispatch Kaia Kanepi.
Pliskova has won all her matches here in straight sets,
including a round of 16 clash with Ashleigh Barty in which she
won all 10 of her service games en route to her third
consecutive U.S. Open quarter-final.
Pliskova and Williams, who will kick off the evening session,
have split their two career meetings, with the Czech having won
their most recent battle in the 2016 U.S. Open semi-finals.
Stephens will kick off the day's action on center court when she
meets 19th-seeded Latvian Anastasija Sevastova for a spot in the
semi-finals against either Williams or Pliskova.
World number three Stephens has settled nicely into her role as
defending champion, approaching each match with a new swagger
and with plenty of support from the home crowd.
Stephens had a straight sets win over Sevastova last month in a
U.S. Open tune-up at Montreal on her way to the final.
Argentine Juan Martin del Potro, the 2009 champion, will cap the
day session when he faces John Isner in a battle of towering
Del Potro, seeded third, has won 81 percent of his first serves
en route to the last eight while 11th-seeded Isner has won a
staggering 85 percent of his own.
Holder Nadal will meet Dominic Thiem for the first time since he
beat the Austrian in this year's French Open final.
The re-match caps the evening session and determines who faces
the winner of the Del Potro-Isner clash.
(Reporting by Frank Pingue; Editing by Ian Ransom)
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