Jack Draper vs Jannik Sinner LIVE: US Open latest tennis scores and updates as British No 1 loses tight first set

A key game this already. Sinner finds the pass as Draper comes into the net, before a further double fault from the 22-year-old. Trotman is urging his player to “use your legs” and get more uplift on his serve.

Sinner locks in on the baseline to get to deuce, before Draper makes a further error on the forehand side – this one going long.

An early break point for Sinner in the second set. Unreal return from Sinner out wide, but Draper saves behind the forehand.

Sinner looks extra imposing on the baseline all of a sudden as he outlasts Draper on a long rally to move 30-0 up.

Draper floats one long on the backhand – and suddenly it’s three set points for Sinner to take the lead in this US Open semi-final.

And that’s wild from Draper on the forehand return – straight out and the World No 1 takes a tight first set 7-5.

Draper’s coach James Trotman is making it perfectly clear that he has to find a way to shorten the points against Sinner.

The Italian is now dominating the longer exchanges, and Draper is putting extra pressure on himself with the number of double faults he is making.

On deuce, Sinner follows in his forehand and Draper pushes the pass long of the baseline! A second break point chance for Sinner, but the Italian goes long on the return!

Draper flirts with the baseline on the backhand-forehand exchange with Sinner, before he pushes into the net! Sinner outlasts him.

Break point #3: Draper can’t find the ace this time…. DOUBLE FAULT from Draper! Oh no. A third double fault from Draper, and Sinner will serve for the set.

Draper will be so annoyed with that game… he was 30-0 up and double faulted on game point after saving break point.

Draper has sent to have his rackets regripped …. Laura Robson, who is courtside for Sky Sports, is saying he is losing his grip on his racket because he is sweating so much.

It’s typically hot and humid in New York.

A fourth double fault of the set from Draper gets Sinner back into the game at 30-30, with the 22-year-old looking a little unsettled there.

Draper finds a big serve out wide, but Sinner reacts to Draper’s drop shot before landing a tricky approach onto the baseline. We head to deuce.

Another serve and volley play from Draper… Sinner attacks on the forehand and Draper can’t react to the volley!

Suddenly it’s break point: but Draper finds a big ace at 128mph. And another! This time flat and out wide on deuce.

But the double fault comes back to haunt Draper! The second of the game and we continue on deuce.

Sinner’s last service game was messy, and there’s a mistimed forehand on the baseline from the World No 1 at the start of this crucial tenth game.

He steadies on the long baseline rally, as Draper pushes wide on the backhand side after the crosscorurt exchange. Comfortable for Sinner.

He moves to 40-15 with the forehand winner from inside the baseline, but then gives away another cheap point with a forehand miss.

Another miss from Sinner! Draper has got to deuce, with a fine return and an error from Sinner on the baseline. Potentially two points away from the set.

There’s tension on the longest rally of the match at 15 shots, but Draper is pushed into the forehand miss as Sinner went deep into his corner.

ACE from Sinner. Big hold. 5-5.

STUNNER from Draper! And at a huge moment with Sinner pressing at 15-30! The Italian found a wicked return on the backhand crosscourt, but Draper scampers wide and delivers a bomb of a forehand winner down the line!

Brilliant, and now Sinner nets on 30-30. Draper goes for the wide serve and net approach – Sinner fires wide on the forehand!

Great response from Draper after making his third double fault of the set early in the game. Sinner will have to hold to stay in this opener.

Hang on, though. A couple of unforced errors from Sinner gives Draper the chance to break back at 0-30.

Good depth from Draper in the baseline rally – and Sinner nets on the forehand! There will be three break points for Draper.

Sinner finds a big first serve down the middle on the first, then Draper lets a loose forehand fly long on the second.

One more chance for now: Draper doesn’t do much on the backhand return, but Sinner hesitates. Then the World No 1 crashes the forehand into the net!

How unlike the Italian! Draper is back in it at 4-4!

Draper loses the opening point on serve for the third game in a row, and Sinner is showing that he will attack the Draper second serve with ruthless intent.

The Italian jumps on the second serve from Draper on the forehand, swatting it back. There’s another chance on 15-30, but Draper replies with an excellent forehand winner down the line.

30-30. Draper looks to come forward on the serve down the middle, but Sinner finds the backhand pass inside the line!

First break point: the first serve goes wide from Draper, Sinner pushes to find the angle, and Draper sends his forehand out of play!

Ah, that net approach on 30-30 was not the one from Draper. Sinner’s eyes lit up at the chance.

Sinner replies with a commanding hold of serve for his own, with the World No 1 dictating from the start of the game by moving Draper around the baseline. There are a few grunts starting to come from Draper, as he is faced with the sheer volume and direction of blows from Sinner.

An ace from Sinner seals it.

I like how Draper is working himself into this set. The 22-year-old is showing no fear as he pushes Sinner back onto his backhand before moving into the net to put away the volley.

Draper needs variety to beat such a strong baseline player, and that’s what he finds. His net approach is followed by two big serves, the second out wide out of Sinner’s reach.

That’s a love-hold. Nicely done.