US Open LIVE: Tiafoe seeking semi-final spot after Sabalenka battles past Noskova

23:29 CET - We could be in for a long night in the city that never sleeps, with Tiafoe leading the fourth set 3-0 after fighting back from a break down to win the third 7-5 - we have a real contest on our hands now!

22:06 CET - Michelsen has now taken a two-set lead, winning the second 6-3. He's yet to drop a single set at this tournament, and Tiafoe will now have to take three off him if he wants to survive.

This is some performance from the young American, who has hit 26 winners to his opponent's eight.

21:20 CET - Alex Michelsen is two sets away from the US Open semis! World number 12 Frances Tiafoe headed into the first men's quarter-final, an all-American clash, very much as the favourite, but 22-year-old Michelsen has claimed the first set 7-5 in 50 minutes.

20:10 CET - That was one heck of a fight, with Sabalenka fighting back from a break down in a decider that ultimately went all the way to a tiebreak, which she then edged 10-7 to claim a 7-6, 3-6, 7-6 victory in two hours and 22 minutes.

Both played excellently in the final set, upping their first-serve percentages and hitting far more winners than unforced errors, but despite some serious quality and spirit from Noskova, the world number one just about had enough to progress.

20:05 CET - Aryna Sabalenka battles into the US Open semi-finals!

19:14 CET - One set all! After fending off two break points in the opening game, Noskova kept things on serve before breaking Sabalenka to make it 4-2, and the Wimbledon champion then saw things out to take this match into a decider.

She played some excellent tennis across the set, hitting 14 winners and winning nine points at the net, and this quarter-final now hangs in the balance.

18:30 CET - Sabalenka wins a rollercoaster of a first set!

The world number one raced into a 5-2 lead, but Noskova then bounced back to win three games in a row and ultimately take things to a tiebreak. There though, Sabalenka took back the initiative to win it 7-1 and take a one-set lead after 48 minutes.

15:45 CET - The quarter-finals are underway! We'll be providing set-by-set updates of Sabalenka's clash right here, and you can click here to follow every point of it.

14:00 CET - Hello, and welcome to our coverage of the day's play at the 2026 US Open for September 8th. The singles tournaments are really starting to feel pointy now, with the quarter-finals getting underway on both the men's and women's sides. There will be two from each side today, with the stage to conclude on Wednesday.

We'll get going with a bang as women's top seed and title holder Aryna Sabalenka takes on this year's Wimbledon winner Linda Noskova in the early match on Arthur Ashe Stadium.

That is followed by Frances Tiafoe vs Alex Michelsen in the first of the men's quarters, and then a second all-American affair as Jessica Pegula takes on Emma Navarro past midnight.

Closing out the day, we have arguably the best match last, with defending men's champion Carlos Alcaraz meeting the red-hot Ben Shelton in a blockbuster clash.

Check out a preview of today's quarter-finals here, and see the full program below with estimated start times listed:

Aryna Sabalenka vs Linda Noskova - 17:30 CET

Frances Tiafoe vs Alex Michelsen - 19:00 CET

Jessica Pegula vs Emma Navarro - 01:00 CET

Ben Shelton vs Carlos Alcaraz - 02:30 CET