Venus Williams (US) beats Maria Sakkari (Gre) 6-3 6-4
Kyle Edmund (GB) retires with neck injury while trailing 3-6 6-3 6-3 1-0 to Denis Shapovalov (Can)
*Shapovalov 3-6 6-3 2-3 Edmund
Right, we are back in play after a quick massage.
For Edmund, not for us.
Although that would be lovely if you want to send someone over to BBC Sport HQ.
Image source, AFP/Getty Images
Naomi Broady
British number three on BBC Radio at Flushing Meadows
That is definitely not a good sign.
It looks like something is trapped at the top of Kyle's shoulder or his neck.
*Shapovalov 3-6 6-3 2-3 Edmund
Ay up, we have a problem here.
Kyle Edmund has called for his trainer as he's got a stiff neck. He looks in quite a bit of pain.
Whilst play is delayed, the crowd are treated to some big tunes on the tannoy.
Image source, Rex Features*Shapovalov 3-6 6-3 2-3 Edmund
Shapovalov robs the first two points from Edmund's serve, the little rascal.
The world number 42 recovers to 30-30 and comes out on top after a defensive rally for 40-30.
But then he finds the net with a low, low effort and we go to deuce.
Eventually, Edmund prevails and we stay with serve for now.
Image source, Rex FeaturesNaomi Broady
British number three on BBC Radio at Flushing Meadows
Shapolalov has one of my favourite backhands on the men's tour now.
I don't remember it being this good on the grass.
Shapovalov 3-6 6-3 2-2 Edmund*
Shapovalov executes another glorious backhand winner for 30-0, but follows it up with a double fault.
Image source, Getty ImagesNo bother, though, because the teenager lands a mid-air backhand on to the line for 40-15. Another beauty.
A forehand error from the Canadian makes it 40-30 before he plants a heavy winner into an empty court and holds.
Naomi Broady
British number three on BBC Radio at Flushing Meadows
I love that the draws are so unpredictable. It was almost boring when Djokovic, Federer, Nadal and Murray were beating everyone.
The matches that were the only fun ones to watch were when they played each other.
Now there are so many good matches in the early rounds.
*Shapovalov 3-6 6-3 1-2 Edmund
Image source, EPAAnother great rally from this young pair. While Shapovalov stays glued back to his baseline, Edmund marches forward and volleys over the winner from close range.
He gets a thumbs up from his opponent for that.
But Shapovalov isn't rolling over. He's brought up break point.
It goes amiss, though, and Edmund composes himself to hold.
Piers Newbery
BBC Sport at Flushing Meadows
Image source, ReutersGasps and a few delirious giggles around the media seats as Cilic joins the exodus of names and seeds from the bottom half of the men's draw, which began with Murray pulling out on Saturday and now leaves us with John Isner as the top seed remaining at number 10.
Only one man, Sam Querrey, has reached a Grand Slam semi-final - so the winner of this match on Ashe right now has as good a chance as any of reaching the final.
Cilic 6-4 5-7 5-7 4-6 Schwarzman
Image source, AFPMarin Cilic is out!
The Croatian 2014 champion and fifth seed has been knocked out by Argentine 29th seed Diego Schwarzman 4-6 7-5 7-5 6-4.
The highest ranked player in the bottom half of the draw is now world number 15 John Isner.
We are also guaranteed a new Grand Slam finalist from that half of this year's US Open draw.
Remarkable.
Shapovalov 3-6 6-3 1-1 Edmund*
Image source, AFP/Getty ImagesDenis Shapovalov with a 'whatever you can do I can do better' attitude.
He also holds to love, finishing off with a big serve which Edmund can only return long.
*Shapovalov 3-6 6-3 0-1 Edmund
Although the Arthur Ashe Stadium is surprisingly empty for a reported sell-out, there are still a few pesky spectators who haven't found their seats quick enough and are disrupting play.
You've got to be quick, folks. Especially when Kyle Edmund holds to love.
The British number three makes the perfect start to the third set.
Image source, EPAPiers Newbery
BBC Sport at Flushing Meadows
"C'mon, Shapstick!"
There is plenty of (North) American support for the Canadian out here, and a sure sign of a teenager on the up is when their player box is rammed with family, friends, coaches, agents etc.
The Edmund box is considerably emptier, with coaches Leon Smith and Mark Hilton in there and dad Steven sitting behind them. Kyle changed his management earlier this week, a behind-the-scenes change that suggest steadier times ahead after a degree of turbulence in Team Edmund over the summer.
Cilic 6-4 5-7 5-7 4-5 Schwarzman*
Image source, Getty ImagesPressure on fifth seed Marin Cilic over on Grandstand.
Diego Schwarzman is serving for the match against this year's Wimbledon runner-up and former US Open champion.
Schwarzman will be nervy too. He lead 5-2 in this set but now we're back to 5-4.
Cat Archer
BBC Radio 5 live at Flushing Meadows
The New York Times have been watching what BBC Radio 5 live do in New York.
Christian is the man lurking behind the camera.
Image source, BBC SportShapovalov 3-6 6-3 Edmund
Image source, Getty ImagesShapovalov brings up set point number five and lets out his biggest roar yet as he overpowers his opponent with a huge serve to finally bag it.
This just got very, very interesting.
Shapovalov 3-6 5-3 Edmund*
What a shot from Kyle Edmund! He absolutely pummels a forehand into the corner for a 0-15 lead.
Image source, Getty ImagesShapovalov racks up his fourth double fault for 15-30 but then sends down his quickest serve of 131mph to level again. Jekyll and Hyde stuff.
Edmund finishes off a superb rally with a smash to earn break point but the Briton can't do anything with it.
We go to deuce again in this intriguing battle.
*Shapovalov 3-6 5-3 Edmund
Rejoice! Someone's taken the game!
And it's gone to Kyle Edmund, who staves off four set points along the way.
Shapovalov will serve for the set.
*Shapovalov 3-6 5-2 Edmund
Set point four? Nope.
Deuce number six? Yes.
*Shapovalov 3-6 5-2 Edmund
How about a third set point for Shapovalov...
Nope. That's gone too. He swipes into the net after Edmund's dart forward.
We continue.
Image source, rex