Wimbledon champion Marketa Vondrousova of the Czech Republic was left in tears on Tuesday despite progressing through to the quarter-finals.
Ninth seed Vondrousova booked her place in the last eight with a battling win over unseeded American Peyton Stearns, coming from a set down to win 6-7 (3/7), 6-3, 6-2.
However, she was seen in tears shortly after, having pulled out of the doubles draw with an injury.
Vondrousova made history in July after becoming the first unseeded woman to win Wimbledon, her first Grand Slam title.
The 24-year-old has never been past the fourth round at the US Open, and admitted after her win she had surprised herself by advancing to the last eight.
“She was playing great from the beginning, and I just tried to stay in the game,” Vondrousova said of Stearns.
“I’m very happy. I actually didn’t expect it after Wimby — it was a lot of pressure. We’ll see what happens next.”
She will face Madison Keys in the quarter-finals.
Alcaraz eases past Arnaldi to reach QF | 00:50
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WOMEN’S DRAW BLOWN WIDE OPEN
In the women’s draw meanwhile, Pegula joined world number one Iga Swiatek — upset in the fourth round on Sunday — in heading for the tournament exit, losing in straight sets to compatriot and close friend Madison Keys.
Pegula had gone into the US Open dreaming of a first ever Grand Slam, buoyed by victory in last month’s WTA 1000 Canadian Open in Montreal.
But the 29-year-old’s campaign came to an abrupt halt in front of a packed Arthur Ashe Stadium as 2017 US Open finalist Keys recorded a dominant 6-1, 6-3 win in just 61 minutes.
Pegula was left with no answer as Keys unleashed a stream of 21 winners to her six.
Keys also punished her friend’s shaky serve, breaking her five times on her way to wrapping up a comfortable victory.
“It’s always tough having to play a friend but we’ve been doing it our whole lives at this point,” Keys, 28, said.
“When we get on the court it’s all business and when we get off the court we go back to being friends.”
Pegula’s exit wasn’t the only upset of the day as China’s Zheng Qinwen ousted No. 5 seed Ons Jabeur in straight sets.
Qinwen rarely took her foot off the throttle en route to a 6-2, 6-4 win over the Tunisian star.
Ninth seed Vondrousova booked her place in the last eight with a battling win over unseeded American Peyton Stearns, coming from a set down to win 6-7 (3/7), 6-3, 6-2.
Vondrousova made history in July after becoming the first unseeded woman to win Wimbledon, her first Grand Slam title.
The 24-year-old has never been past the fourth round at the US Open, and admitted after her win on Monday she had surprised herself by advancing to the last eight.
“She was playing great from the beginning, and I just tried to stay in the game,” Vondrousova said of Stearns.
“I’m very happy. I actually didn’t expect it after Wimby — it was a lot of pressure. We’ll see what happens next.”
Two other women’s quarterfinalists will be decided later Monday, with second seed Aryna Sabalenka — destined to be the new women’s world number one after Swiatek’s demise on Sunday — facing Russia’s Daria Kasatkina.
ALCARAZ MARCHES ON
Carlos Alcaraz swept into the quarter-finals of the US Open with a straight sets demolition of Italy’s Matteo Arnaldi.
Defending champion Alcaraz, who has only dropped one set on his journey into the last eight, produced a dominant display to overwhelm world No.61 Arnaldi, winning 6-3, 6-3, 6-4 in 1hr 57min.
The 20-year-old Alcaraz is bidding to become the first man since Roger Federer in 2008 to successfully defend the US Open after winning the title for the first time last year.
The identity of the Spaniard’s quarter-final opponent will be confirmed later Monday, with Alcaraz due to face either Germany’s Alexander Zverev or Italy’s sixth seed Jannik Sinner in the last eight on Wednesday.
A match with Sinner would be a repeat of last year’s quarter-final classic between the two men, which set a record as the latest ever finish for a US Open game after wrapping up at 2.50am.
“I think the intensity from the beginning until the last ball, I played a really solid match, less mistakes,” Alcaraz said after Monday’s brisk victory.
“I’m really happy with the performance in general.”
