Unseeded Karolina Muchova moved into the US Open quarter-finals as she upset fifth seed Jasmine Paolini on Monday.

Muchova, who made the semi-finals in New York in 2023, recovered from being 3-1 down in the opening set to secure a 6-3 6-3 victory over the Italian.

Paolini, 28, has had a great 2024, reaching the final of both the French Open and Wimbledon. But she struggled to deal with her Czech opponent’s serve as Muchova lost just five points when serving.

“I was a little bit nervous from the start so I was trying to get my shots to feel the ball,” said the 28-year-old. “Jasmine Paolini is an incredible player. I’m just really happy it’s worked again for me here.”