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NOW: Matteo Berrettini v Corentin Moutet in US Open second round
British teenager Emma Raducanu beats China's Zhang Shuai 6-2 6-4 to reach third round
German fourth seed Alexander Zverev beats Albert Ramos-Vinolas in straight sets in just one hour 14 minutes
Top seed Ashleigh Barty beats Denmark's Clara Tauson 6-1 7-5, while Belinda Bencic, Iga Swiatek & Petra Kvitova also advance
World number one Novak Djokovic faces Tallon Griekspoor in night session (00:00)
Harry Poole
Zhang v Raducanu
A drier day four at the 2021 US Open is kicking into gear.
First up today, we'll be bringing you coverage as British 18-year-old Emma Raducanu aims for a place in the third round.
China's Zhang Shuai stands in her way and that match will be under way shortly.
Welcome all!