Confident serving from Raducanu sees her move to 40-15, but Sakkari is really struggling to keep the ball in the court at the moment. She is up to 14 unforced errors after her latest shot goes long of the baseline.

Raducanu then comes out on top of an exchange at the net after getting slightly fortunate with a drop shot that Sakkari should have put away.

But everything is going Raducanu’s way at the moment and that was a simple hold for the 18-year-old, her first of the match.

Sakkari claims the first point of her next game with a quick-fire one-two punch, but Raducanu is doing a great job of attacking the Greek’s serve.

She puts Sakkari under pressure to win the next point before Sakkari makes the double to set up an opening for Raducanu at 15-30.

Raducanu looks frustrated after going long with a forehand, and that’s too good from Sakkari at 30-30 as she hits a big serve down the T and follows it up with the crosscourt winner.

But that only serves to bring out Raducanu’s best point of the match, as she attacks Sakkari with two strong groundstrokes before playing a cushioned volley at the net to move to deuce.

And wow, that is brilliant from Raducanu. She viciously goes after the Sakkari serve and pins the Greek behind the baseline to bring up a break point - which she then saves with impressive depth of her own.

Sakkari swivels to plays a backhand winner across court but a forehand volley under no pressure on the next point goes long to bring up another deuce.

A stunning backhand winner down the line from Raducanu earns her another break point. And a double fault from Sakkari hands Raducanu a second break!

Can you believe this?! Raducanu is 2/3 on break points while Sakkari is 0/7.

Sakkari responds with a booming forehand winner across court to quickly move into a 0-30 lead in the next game, before a forehand from Raducanu drops long of the baseline to bring up three break-back points.

Sakkari has a look at a second serve but hits the forehand into the middle of the net before Raducanu meets a backhand volley at the net to force Sakkari into the miss and save the second.

A wild swing from Sakkari goes wide as the third break point goes begging, but another one quickly presents itself as Raducanu goes long when under pressure with a forehand from behind the baseline.

A wicked serve down the T from Raducanu saves the fourth break point, and she follows that up with a brilliant second serve out wide on deuce.

And Raducanu finally escapes as she puts Sakkari on the back foot with a crosscourt forehand, as she holds!

Raducanu has saved seven break points so far but holds a 3-0 lead in the opening set. It’s a dream start.

Raducanu wins the opening point on the Sakkari serve as she extends the rally under pressure to force the miss from her opponent.

She attacks Sakkari’s second serve on the next point but hits the forehand long, before Raducanu comes out on top in the latest lengthy rally to bring up 15-30.

Sakkari goes big on her second serve but misses to set up two break points for Raducanu - before Sakkari nets on the next point!

It’s advantage Raducanu early in the opening set!

Sakkari wins the opening point of the match as she comes out on top in a lengthy rally as Raducanu hits the net with a forehand.

Raducanu nets again following a second long rally but an ace out wide at 0-30 is welcomed.

Raducanu then steps into a forehand at 15-30 but hits the shot long of the baseline to bring up two break points for Sakkari.

The 17th seed goes long on the first break point before Raducanu saves the second with a stunning backhand winner across court to bring up deuce.

The pressure continues as Sakkari forces Raducanu into the miss to bring up another break point, but then goes long again as her third chance goes calling.

Raducanu responds with a fierce ace down the middle before Sakkari nets to bring a long opening game to a close. It’s an important hold for Raducanu after facing three break points.

And breathe...

Here we go! Can Emma Raducanu continue her extraordinary run in the US Open? The 18-year-old will serve first in the biggest match of her career.

*denotes next server

“With each match I’ve been in confidence, I’m just looking forward to getting out there tonight,” says Emma Raducanu in her pre-match interview.

“To play on Ashe in a night match under the lights is one of the most iconic things in tennis, so I can’t wait to get out there.”

“I’ve just been focusing on myself,” she says when asked whether she has been inspired by Leylah Fernandez’s victory in the previous semi-final.

Raducanu has just been introduced to the Arthur Ashe crowd.

“Nerves and execution,” says 18-time Grand Slam champion Martina Navratilova, when asked for the factors that will decide this semi-final.

“These teenagers have nothing to lose. They are dangerous. Sakkari has the biggest firepower but Emma has been surprising everybody,” she says on Amazon Prime.

Emma Raducanu will be playing under the lights at Arthur Ashe for the first time and won’t get her match underway until at least 10pm local time in New York.

Hopefully the majority of the home crowd remain despite the late finish and provide a similar atmosphere to the one that was created in the previous semi-final between Fernandez and Sabalenka.

Just look at these scenes.

Leylah Fernandez said in her on-court interview that she couldn’t have won without the support of the crowd on Arthur Ashe.

The fans in the stadium were fully behind Fernandez, which certainly made things tough for Sabalenka on the crucial points in the match.

Raducanu is likely to receive a similar backing from the Arthur Ashe crowd, with the 18-year-old having also enjoyed loud support in her previous matches on the court.