Madison Keys' victory over fourth seed Elina Svitolina Tuesday ensured four American women progressed to the quarterfinals in NY - the best performance by the U.S. since 2002, when five made it into the last eight. One thing that might count against Keys in this match is that she has become somewhat of a nocturnal animal at Flushing Meadows, playing almost all her matches in the night session.
When asked about facing Sloane Stephens in the semifinals, Williams asked reporters: "I don't think I have ever played her".
For years the United States Tennis Association (USTA) has been working on a plan to "Make American Tennis Great Again" and on Wednesday it all came together with American women completing a sweep of the U.S. Open quarter-finals. The vehicle ride over I was definitely feeling it but once I got out here I felt really good.
On Thursday, Keys faces Vandeweghe - with the victor reaching her first Grand Slam final - and No. 9 seed Venus Williams meets 83rd-ranked Sloane Stephens. "If someone told me this is where I would be right before Wimbledon I wouldn't have believe you. Maybe I'm going to feel better in the next Grand Slams".
Meanwhile, Pliskova's loss to Vandeweghe means there will be a new world No. 1.
Madison Keys defeated Kaia Kinepi in the quarterfinals of the US Open.
It's taking longer than most expected; that's equally true of the two other younger semifinalists who will take the court Thursday night.
CoCo Vandeweghe had been lamenting her inability to get past the second round of her home Grand Slam, going back to her first U.S. Open in 2008, when she lost in the first round as a 16-year-old but subsequently won the girls championship.
Alabama's Defense Too Much For Florida State In Loss
Some of the credit for those stalled drives, of course, goes to Alabama's defense for rising up almost every time FSU threatened. Daniel Gligich: Coming off a season opening win, is there any reason to doubt that Alabama is the best team in the country?
Vettel 'surprised' by pace of others at wet Monza
All of which would have been enough to grab the attention but behind him everyone, it seemed, wanted their time on centre stage. They were quick whenever they went out, which is what we expected. "The weather was obviously incredibly tricky for us all".
Root defends declaration after Headingley defeat
Each and every member of the team felt it; we were really hard on ourselves but it wasn't a situation where we could panic. Instead it was Broad who struck twice in contrasting fashion as the West Indies' 46 for none became 53 for two.
Sharapova played well and had some exciting matches, but Williams, Stephens, Vandeweghe and Keys have all stolen the show.
The No. 24 seed del Potro faces sixth-seeded Dominic Thiem, with the victor getting Federer if the five-time champion can improve his 31-1 record in night matches at Arthur Ashe Stadium.
And not since 2002 have American women been so prominent at the US Open.
Keys will take on Coco Vandeweghe - who earlier took out world No. 1 Karolina Pliskova on Day 10 - with the victor taking on Venus Williams or Sloane Stephen.
Muguruza has eight top 10 wins this year including victories over two reigning number ones, Angelique Kerber at Wimbledon and Pliskova in Cincinnati. I don't see any difference between this. That year, five of the top six players were American, and this year is even more impressive. "So for me, no changes".
"Let's make it 4-for-4", Vandeweghe said in an on-court TV interview.
Keys will face Vandeweghe (who upset World No. 1 Karolina Pliskova to reach the semis) in for the third time and Williams will meet Stephens for only the second time in their careers.