Third seed Jessica Pegula turned the newest top-ranked participant to chunk the mud on the US Open on Monday as Carlos Alcaraz regarded to maintain his title defence on monitor.

A day after world primary and reigning girls’s champion Iga Swiatek was despatched crashing out on Sunday, Pegula discovered herself heading for the exit as she slumped to defeat in opposition to American compatriot and shut buddy Madison Keys.

Pegula had gone into the US Open dreaming of a primary ever Grand Slam title, buoyed by victory in final month’s WTA 1000 Canadian Open in Montreal.

However the 29-year-old’s US Open marketing campaign got here to an abrupt halt in entrance of a packed Arthur Ashe Stadium as 2017 US Open finalist Keys recorded a dominant 6-1, 6-3 win in simply 61 minutes.

Pegula was left with no reply as Keys unleashed a stream of 21 winners to her six.

Keys additionally punished her buddy’s shaky serve, breaking her 5 instances en path to victory.

“It is at all times robust having to play a buddy however we have been doing it our entire lives at this level,” Keys, 28, mentioned.

“Once we get on the court docket it is all enterprise and once we get off the court docket we return to being mates.”

The Seventeenth-seeded Keys will now face Wimbledon champion Marketa Vondrousova of the Czech Republic within the quarter-finals on Wednesday.

Ninth seed Vondrousova booked her place within the final eight with a battling win over unseeded American Peyton Stearns, coming from a set all the way down to win 6-7 (3/7), 6-3, 6-2.

Vondrousova made historical past in July after changing into the primary unseeded lady to win Wimbledon, her first Grand Slam title.

The 24-year-old has by no means been previous the fourth spherical on the US Open, and admitted after her win on Monday she had stunned herself by advancing to the final eight.

“She was enjoying nice from the start, and I simply tried to remain within the recreation,” Vondrousova mentioned of Stearns.

“I am very completely satisfied. I really did not count on it after Wimby — it was loads of stress. We’ll see what occurs subsequent.”

The identities of two different girls’s quarter-finalists can be determined later Monday, with second seed Aryna Sabalenka — destined to be the brand new girls’s world primary after Swiatek’s exit on Sunday — going through Russia’s Daria Kasatkina.

Tunisia’s fifth-seeded Ons Jabeur faces China’s Zheng Qinwen within the different girls’s fourth spherical conflict.

Within the males’s draw in the meantime, present world primary Alcaraz goals to advance to the quarter-finals when he faces Italy’s shock package deal Matteo Arnaldi.

Arnaldi, the world quantity 61, reached the final 16 after upsetting British sixteenth seed Cameron Norrie in straight units.

That has now given Arnaldi an opportunity of a dream shot in opposition to Alcaraz.

“After I noticed the draw, that was my aim, to go and play in opposition to him,” mentioned Arnaldi of the prospect of enjoying Alcaraz.

“I do not need to say we play very related. However he is very bodily, and I feel I am a bit bodily.”

In different males’s matches on Monday, Britain’s Jack Draper takes on eighth-seeded Russian Andrey Rublev whereas third seed Daniil Medvedev, the 2021 champion, faces Australian thirteenth seed Alex de Minaur.

Within the late recreation on Arthur Ashe, Germany’s Alexander Zverev, seeded 12, will purpose to derail Italian sixth seed Jannik Sinner.