Jonathan Jurejko
BBC Sport at Flushing Meadows

Ashe greets Gauff with an ear-splitting roar as she struts out.

Even her cans - probably pumping out J Cole, SZA or Jaden - won't have kept that noise out.

Coco Gauff and Karolina Muchova met for the very first time just 18 days ago.

Then, in the Cincinnati final, the American prevailed in straight sets 6-3 6-4.

That victory came during Gauff's ongoing 10-match winning streak as she bids to make her first US Open final.

If she can, expect some atmosphere inside Arthur Ashe Stadium this evening. There's already a lively atmosphere, with plenty of seats still to be filled.

Image source, Getty Images

The players are ready for the first of tonight's women's semi-finals.

A huge cheer goes up as Coco Gauff takes to the court and prepares to serve first on Arthur Ashe Stadium.

Here we go!

Jeff Tarango
Former American tennis player on BBC Radio 5 Sports Extra

Both players are coming to the peak of their careers.

Muchova is very talented. She was born an athlete.

And then you have Coco, who turned pro at 15 and got into some finals.

People said it was a fluke and she’s done a good job to prove it wasn’t. She’s a really great player and she could change American tennis.

Coco Gauff has not had things her own way on her way to the semi-final. She has been taken the distance three times, twice coming from a set behind.

• R1: Laura Siegemund 3-6 6-2 6-4
• R2: Mirra Andreeva 6-3 6-2
• R3: Elise Mertens 3-6 6-3 6-0
• R4: Caroline Wozniacki 6-3 3-6 6-1
• QF: Jelena Ostapenko 6-0 6-2

Image source, Getty Images

Karolina Muchova, by comparison, looks to have had the easier route through to her first US Open semi-final.

• R1: Storm Hunter 6-4 6-0
• R2: Magdalena Frech 6-3 6-3
• R3: Taylor Townsend 7-6 (7-0) 6-3
• R4: Wang Xinyu 6-3 5-7 6-1
• QF: Sorana Cirstea 6-0 6-3

Jonathan Jurejko
BBC Sport at Flushing Meadows

Image source, BBC Sport

Rather apt that Taylor Swift is booming out as excited fans fill up Ashe.

'Welcome To New York', obviously, is the DJ's choice.

Both players appear on the jumbotron as they answer a few final questions from the US broadcaster in the tunnel.

Silence for Muchova. Adulation for Gauff.

Karolina Muchova is through to her third major semi-final, three months after reaching her first Grand Slam final at the French Open.

The Czech 27-year-old, who is currently at a career-best 10th in the world, beat Sorana Cirstea in straight sets in the last eight and has so far lost just a single set in five matches in New York.

She holds a record of 32-3 at Grand Slams after winning the opening set - winning each of her last 11 when doing so.

Image source, Getty Images

BBC Radio 5 Sports Extra

You can follow live radio coverage of the first semi-final between Coco Gauff and Karolina Muchova.

Listen in by clicking the audio icon at the top of this page on the BBC Sport website and app.

Or, you can catch it via BBC Sounds.

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It's been a good day for Great Britain in the wheelchair events.

Alfie Hewett, Gordon Reid and Andy Lapthorne all reached the semi-finals in their respective events, with Lucy Shuker the only exit after a straight-set defeat by top seed Diede de Groot.

Hewett continued his US Open title defence with a dominant win over Japan's Takuya Miki, while Reid beat fourth seed Martin de la Puente.

The British pair will team up shortly on Louis Armstrong Stadium to take on France's Stephane Houdet and Takashi Sanada of Japan for a place in the final as they bid for a sixth doubles title at Flushing Meadows.

Meanwhile, Lapthorne progressed to the quad semi-finals with a win over his doubles team-mate Donald Ramphadi.

The pair are now playing together against Slovakia's Tomas Masaryk and Brazil's Ymanitu Silva in the doubles semi-final and they're a set up.

Full report.

Image source, Getty Images

Three really is a magic number for third seeds Rajeev Ram and Joe Salisbury.

They battled hard to book their place in the men's doubles final for a third consecutive year, beating second seeds Ivan Dodig and Austin Krajicek.

Ram said: "It’s been a tough year for us. To play to this level and stick together like we did, I just think we did great, I am so proud of our performance."

They are the first team to reach three consecutive US Open finals since Todd Woodbridge and Mark Woodforde in 1994-96, and are aiming to be the first team in the Open Era (since 1968) to win three straight US Open titles.

Salisbury said: "We didn’t think we would be here, but there is something about this place that is very special and seems to bring out the best of us."

They will face sixth seeds Rohan Bopanna and Matt Ebden, who beat the French pairing of Pierre-Hugues Herbert and Nicolas Mahut, 7-6 (7-3) 6-2.

Jonathan Jurejko
BBC Sport at Flushing Meadows

Gauff and Muchova are contesting the first semi-final after having the benefit of an extra day off since their quarter-finals.

Sabalenka and Keys both played yesterday, meaning they are given the later start.

The weather is still balmy at Flushing Meadows this evening. A stiff breeze has made the temperature slightly cooler, but the humidity has risen.

Gauff, Keys and Sabalenka all live and train in Florida, anyway.

"What can be worse than Florida," laughed Sabalenka when asked about the heat yesterday.

With her victory over Jelena Ostapenko in the last eight, Coco Gauff became the 10th American teenager to reach the US Open semi-finals.

And the 19-year-old is the first to do so since Serena Williams in 2001.

Gauff's best previous US Open run saw her reach the quarter-finals last year, while she is one victory away from matching her best ever Slam result, having reached the French Open final in 2022.

Image source, Getty Images

Here's what's coming up tonight - and roughly when.

Get the kettle on, grab your snacks of choice, and settle down for what should be a couple of great semi-finals in New York.

Image source, BBC Sport

We're into the final four days of the 2023 US Open.

And just four players still have their title ambitions intact in the men's and women's singles draws.

Tonight, home hopes Coco Gauff and Madison Keys will attempt to reach the final in New York.

First up, Gauff faces 10th seed Karolina Muchova, before Keys takes on world number one in waiting Aryna Sabalenka.

Welcome!

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images