Vandeweghe victory continues American women's dominance
COCO Vandeweghe has continued America's dominance of the US Open women's draw by beating Karolina Pliskova.
The Pat Cash-coached Vandeweghe joined countrywomen Venus Williams and Sloane Stephens in the semi-finals at Flushing Meadows after defeating Pliskova 7-6 (7-4) 6-3.
Pliskova needed to reach the final at least to take over the No.1 spot on the women's rankings but now will be taken over by Garbine Muguruza when the US Open finishes.
She had a set point in the opener against Vandeweghe but could not take it and the 20th seed completed athe victory to reach her second grand slam semi-final of the season.
Victory for Madison Keys over Kaia Kanepi later would make it the first clean sweep for the host nation since 1981.
"When I won this event as a junior I always dreamed about being here on the real stage," the 25-year-old Vandeweghe said.
"To come together this year, it is a process. I did expect it overnight when I was 16 but now here I am and I couldn't wish for anything better.
"I watched the match last night with Venus and think she said it best.
"We have to admire Serena and Venus, Lindsay (Davenport), Jennifer (Capriati). They all motivated me to be the next great American coming up and let's make it four for four."
Pliskova was the only top-eight seed to make it through to the quarter-finals but Vandeweghe made the better start and moved into a 4-2 lead.
The No.1 seed fought back and had a set point at 5-4 but Vandeweghe produced a fine backhand to save it and she was the more consistent player in the tiebreak.
It was Vandeweghe who secured the only break in the second set and she saved a break point in the final game before clinching victory when Pliskova netted a return.