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CoCo Vandeweghe Beats No. 1 Karolina Pliskova to Reach U.S. Open Semifinals

NEW YORK – Another American woman is into the 2017 U.S. Open semifinals.

No. 20-seed CoCo Vandeweghe ousted World No. 1 Karolina Pliskova in the quarterfinals on Wednesday, winning 7-6(4), 6-3 to advance to her second major semifinal and second this year.

In the opening set, Pliskova had a slight advantage over Vandeweghe and almost came back from a break down to take the set. But in the 10th game, Vandeweghe saved a set point to hold for 5-5 and then forced a tiebreak, which she went on to win 7-6(4). Pliskova threw her racket in frustration after losing the first set tiebreak.