Top seed Karolina Pliskova has crashed out of the US Open following a straight-sets defeat in the second round.
The world no.3 lost 6-1, 7-6 (2) to France’s Caroline Garcia, who will now face 28th seed, American Jennifer Brady.
Elsewhere, sixth seed Petra Kvitova overcame a shaky start to defeat Kateryna Kozlova 7-6 (3), 6-2 in her second-round match, while the 2018 champion, Naomi Osaka, cruised past Camila Giorgi 6-1, 6-2.
In the men’s draw, top seed Novak Djokovic overcame Kyle Edmund 6-7 (7-5), 6-3, 6-4, 6-2 to set up a third-round matchup against No. 28 Jan-Lennard Struff.
Fourth seed Stefanos Tsitsipas also advanced to the third round following a 7-6 (2), 6-3, 6-4 win over wild card Maxime Cressy.
Substitute Jhon Duran scored two late goals as Aston Villa fought back to salvage a 3-3 home draw with Liverpool on Monday and take a significant step towards a place in the Champions League next season.
Arsenal's Leandro Trossard capitalised on dreadful defending to secure a 1-0 win against Manchester United that saw the Gunners climb back to the top of the Premier League, ensuring the title race will be decided on the final day.
UAE Team Emirates rider Tadej Pogacar has retained his overall lead after Dutchman Olav Kooij won stage nine of the Giro d'Italia on Sunday, pipping Jonathan Milan by half a wheel right at the finish line in a breathless sprint at the end of a 214-km ride from Avezzano to Naples.
Rory McIIroy claimed his fourth Wells Fargo Championship after a superb back nine saw him finish -17 par having trailed by two shots after seven holes.