Francisco Comesana gets a mini-break from the first point of the tie-break and races into a 3-0 lead with two more points on serve.

A great first serve from Francisco Comesana saves the first break point, before Cameron Norrie blasts a forehand away for a winner to secure the break.

Into a tie-break we go...

Definitely a chance now.

Jonathan Jurejko
BBC Sport senior tennis reporter at Flushing Meadows

You won’t be surprised to learn the Argentines are back in a boisterous mood.

Norrie is fuming with himself. He clicks his tongue before gesturing his annoyance.

Re-gripping his racquet might be his way of a cathartic release.

Great defence from Cameron Norrie, who outlasts Francisco Comesana in a long rally to get to 0-30.

Chance.

Francisco Comesana's supporters have found their voices again, raising the noise levels as their man emerges from his chair to attempt to wrap up the third set.

This one is far from over yet.

Cameron Norrie approaches the net but can't put away a forehand volley. 30-30.

Then Norrie sends a backhand into the net and the Briton needs to save a break point... and he goes long with the forehand.

Francisco Comesana will get a second opportunity to serve for the third set.

Jonathan Jurejko
BBC Sport senior tennis reporter at Flushing Meadows

Comesana is showing signs of life in this match has enthused the Argentine fans dotted around a packed outside court.

At either side adjacent to the baseline, there are two groups of particularly vocal lads.

Terrace-style chants, and that familiar hand-under-the-chin gesture, are being busted out by those wearing football jerseys including La Albiceleste, as well as club sides Boca Juniors and River Plate.

Norrie breaking back has quietened them down.

But Cameron Norrie takes the fourth break point! All square again in the third set!

Cameron Norrie gives himself some hope with a backhand passing shot to bring up 30-30, before a double fault gives him a break point, but the Briton goes long.

Norrie controls a rally at deuce and gets a second break-point chance in the game. Comesana puts away an overhead to save another one.

Another double fault! Break point number three... great forehand winner from Comesana!

Ken Skupski
Former British player on BBC Radio 5 Sports Extra and BBC Sounds

And that work done by Norrie is a bit of a reminder of the work that Comesana was doing at the back end of the second set. He didn't win it, but it actually gave him the platform to start really strongly in this third and actually give himself a fighting chance in this match.

When you go to two sets to love, everything's going well for you, you don't really need to change too much, it's your opponent who has to change and come up with a new game plan. It probably takes a little bit of time to figure out what that game plan might become.

Image source, Getty Images

There's a big shock on Court 17, where 12th seed and 2022 US Open runner-up Casper Ruud loses in five sets against Belgium's Raphael Collignon.

Ruud, who reached the final of the mixed doubles with Iga Swiatek at Flushing Meadows last week, was two sets to one up but 23-year-old Collignon, playing in his first Grand Slam main draw, has fought back to win 6-4 3-6 3-6 6-4 7-5.

World number 107 Collignon squandered his first two match points with double faults but held his nerve on the third for the biggest win of his career.

Defeat completes a miserable year of Grand Slams for Ruud, who also lost in the second round at both the Australian and French Opens, and missed Wimbledon with a knee injury.

Cameron Norrie holds and makes sure Francisco Comesana will have to serve out the set to reduce his deficit.

Cameron Norrie hits a forehand winner to get to 30-30 on his opponent's serve but then goes long with a second-serve return. Chance possibly missed there.

Francisco Comesana sends away another winner to take a 5-3 lead in set three and throws in a couple of fist pumps towards his supporters for good measure.

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Cameron Norrie races into a 40-0 lead but a couple of unforced errors give Francisco Comesana a sniff of another chance to break.

The Briton eventually gets it done and trails 4-3.

Francisco Comesana is edging closer to winning the third set.

Francisco Comesana certainly believes he can mount a comeback and is pushing Cameron Norrie in the third set.

Norrie has to dig deep to hold serve and keep himself just the one break down.

Image source, Getty Images

Ken Skupski
Former British player on BBC Radio 5 Sports Extra and BBC Sounds

Cameron Norrie can be doing all the right things but if Francisco Comesana gets his feet back under him, it can very quickly look like an entirely different match.

He's just put a racquet in to go to the stringers which, in theory, takes 25-30 minutes. He thinks that there's potential, that there's lots more tennis in this match, and it's the reason why he's doing it.

His tail is up. He was out there hitting winners at the end. If he can just find a way to get a couple of service games under his belt, get that confidence back and hold his serve, then he can believe that he can get right back into the match.

Norrie is still in control, but he just needs to make sure he doesn't let this run away too quickly.

A roar from Cameron Norrie as Francisco Comesana goes long with a groundstroke with the Briton looking to get back level in set three.

Norrie sends his return long on break point, though, and the Argentine passes an advancing Norrie to back up his break of serve in the previous game.

Cameron Norrie is 15-30 down on serve but sends a brilliant forehand down the line for a winner.

Then a lengthy rally at 30-30 is interrupted when a stray ball from a nearby practice court rolls across the court.

Francisco Comesana earns himself a break point but Norrie saves it well with an overhead winner. Another break point, an unreturnable serve from Norrie.

Backhand winner from Comesana to bring up a third break point - and this one, he takes!

Image source, Getty Images