Vandeweghe, who had never reached the second week at her home Grand Slam tournament before this year, was involved in a real battle against Safarova, who certainly had opportunities herself to get herself in contention for the victory, though the American proved too strong as she sealed a 6-4, 7-6 (2) victory in an hour and 39 minutes on Arthur Ashe Stadium.
"The opponent was not the best today".
Pliskova rated the performance as one of her best matches of the year, and said: "I think because of this match (against Zhang) I felt like this today, that I went through this one". The Czech Republic native is in the quarters for the second consecutive year. Different match or opposite matches what I had so far this tournament, so it was not many girls which are playing that fast and with that serve and that speed.
Now Kanepi will attempt to reach her first Major semi-final, but will have to face one of the very talented, and very young, women who would contest the final quarter-final place: Svitolina and Madison Keys.
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However, middle-order batsman Shai Hope emerged as a real star for his side as she smashed two consecutive centuries in the Test. Opener Kraigg Brathwaite had earlier struck a solid 95 after being dropped by Alastair Cook on four.
"We both have the plan to play aggressive, but I think she's a little bit, not messy sometimes, but she's just going for her shots". I think one of the best, even this year.
For the first time since 2002, half of the women's quarterfinalists at the U.S. Open are Americans.
This time, she took the lead 4-0 against an opponent obviously nervous, and then she won the second round even more uneven. Keys and Vandeweghe are joined in the quarters by Americans Venus Williams and Sloane Stephens. "My energy dropped. Once I got broken in the third, I just kept telling myself just try to figure it out, just get as many balls in as you can". It's pretty incredible where I am now compared to where I was few months ago. Kanepi, who's missed nearly two years of play with plantar fasciitis, is playing her first Grand Slam since the 2015 US Open. Kanepi, ranked No. 418 in the world, became the lowest-ranked quarterfinalist at the U.S. Open since computer rankings began in 1970.
With Wimbledon champion Garbine Muguruza knocked out on Sunday night by Petra Kvitova, this now appears a golden chance for Pliskova to win her maiden grand slam title. If she'll manage to pull out something special in NY she will make her reign even more legitimate.