14:30 CET - Good afternoon and welcome back to our coverage of the US Open this Sunday! The fourth round begins in a few hours, with several really exciting clashes to look forward to.

Up first on Arthur Ashe at 17:30 CET, world number one and two-time defending champion Aryna Sabalenka is set to take on the home crowd when she meets charismatic American Taylor Townsend.

That is followed by what is sure to be a really entertaining encounter between men's defending champion Carlos Alcaraz and Tommy Paul - two players who are certainly going to bring some style.

The night session sees a third American of the day, Ben Shelton, clash with the resurgent Stefanos Tsitsipas, before Emma Navarro will be hoping to end the day on a high for the home crowd against Anna Kalinskaya.

Meanwhile, Linda Noskova gets proceedings underway on Louis Armstrong at 18:30 CET against the impressive Marta Kostyuk, in a rematch of their semi-final meeting during the Czech's run to the Wimbledon title earlier this year.

Former champion Daniil Medvedev then faces off against Frances Tiafoe, before Jessica Pegula continues her quest for a maiden Grand Slam title against Sorana Cirstea.

There is just one singles match on Grandstand today, as Alex Michelsen and Tomas Martin Etcheverry aim to reach their first US Open quarter-final.

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