Second Grand Slam of the season starts in secure bio-bubble at Flushing Meadows in New York
Kyle Edmund beats Kazakhstan's Alexander Bublik 2-6 7-5 7-5 6-0 in first round
Britain's Cameron Norrie comes from two sets down to beat Argentina's ninth seed Diego Schwartzman 3-6 4-6 6-2 6-1 7-5
American teenager Coco Gauff loses 6-3 5-7 6-4 to Anastasija Sevastova
Women's top seed Karolina Pliskova reaches second round; Petra Kvitova and Angelique Kerber also through
Novak Djokovic & Naomi Osaka play in the night session
*Schwartzman 6-3 6-4 2-6 1-6 4-3 Norrie
Schwartzman has called for a physio to come to the court. Maybe it's something to do with his fall earlier. It might be some clever tactics but who are we to judge?
*Schwartzman 6-3 6-4 2-6 1-6 4-3 Norrie
Schwartzman does get the 51st break point, but he squanders the first one as he bats his forehand long.
It's Norrie's error that wraps things up though as his cross-court forehand lands wide. FIVE breaks of serve in this set.
Image source, EPASchwartzman 6-3 6-4 2-6 1-6 3-3 Norrie*
Fifty break points clearly is not enough for these two. Schwartzman is on his way to another as Norrie taps the ball into the net and the Argentine goes 30-0 up.
Bit greedy if you ask me.
Schwartzman 6-3 6-4 2-6 1-6 3-3 Norrie*
Schwartzman hits the ball long and it's back on serve.
What an effort this is from Norrie.
*Schwartzman 6-3 6-4 2-6 1-6 3-2 Norrie
The drama! Norrie taps a drop-shot over the net and Schwartzman slips as he runs forwards for it, leaving the court open from the Brit to hit a winner.
The Argentine is up and doesn't look to be in too much pain, but it's break point Norrie - the 50th of the match.
*Schwartzman 6-3 6-4 2-6 1-6 3-2 Norrie
Norrie looks like he's up for the challenge though as he steps up and slams a backhand winner to go 15-0 up.
He keeps the pressure up but Norrie's 60th unforced error of the match brings up 30-30.
Naomi Broady
British player on BBC Radio 5 Live Sports Extra
Norrie had success with the drop-shot in the third and fourth sets but the drop-shots here weren't quite good enough.
*Schwartzman 6-3 6-4 2-6 1-6 3-2 Norrie
This has been so impressive from Norrie, taking it to a fifth set.
But can he close it out when he's a break down in the decider against the ninth seed? Quite tricky that one.
*Schwartzman 6-3 6-4 2-6 1-6 3-2 Norrie
A series of sublime backhands saves the first break point for Norrie.
A less impressive Schwartzman backhand, which lands in the net, saves the second.
But the third time is the charm for the ninth seed as Norrie is caught on the run and knocks his forehand long.
Schwartzman 6-3 6-4 2-6 1-6 2-2 Norrie*
Suddenly, Schwartzman looks to be the more confident of the two. Norrie goes for a serve and volley but the Argentine eases a lob over his head.
A forehand into the net gives Schwartzman three break points.
Schwartzman 6-3 6-4 2-6 1-6 2-2 Norrie*
Schwartzman taps a backhand into the net to bring up deuce. Norrie looks to be in control but it's swinging back on forth in the decider.
Norrie clings on to the game for as long as he can, running all over the place to stay in a rally. But he eventually finds the net and the ninth seed gets a hold.
Jonathan Jurejko
BBC Sport tennis writer
Who wants a remarkable stat? There have been 45 break points (FORTY-FIVE!) so far in this match.
That can't be far off some kind of record, surely.
Norrie has won eight of 25 (32%) and saved 15 of 21 (71%).
Image source, EPA*Schwartzman 6-3 6-4 2-6 1-6 1-2 Norrie
Finally, a hold!
An ace straight down the middle seals the deal for Norrie. He's still on track for a big upset.
Schwartzman 6-3 6-4 2-6 1-6 1-1 Norrie*
Schwartzman showers Norrie with powerful forehands but eventually ends things with a backhand error. Deuce.
Schwartzman 6-3 6-4 2-6 1-6 1-1 Norrie*
Schwartzman lands a smash at the net to level things at 30-30.
And another double fault gives the ninth seed break point.
*Denotes next server
Naomi Broady
British player on BBC Radio 5 Live Sports Extra
That is a huge game to break for Cameron - not only for his confidence levels but for his energy, to know he is still in this match.
The energy levels are the difference between them at the moment. They are moving similarly at the back of the court but Cam is just bringing a bit more energy.
Schwartzman 6-3 6-4 2-6 1-6 1-1 Norrie*
Surely not, could this be a straightforward hold for Norrie?
We're yet to see one in the fifth set but the 25-year-old is quickly up to 30-0 after a couple of well-constructed points.
Then he undoes it with a double fault. Sigh.
Schwartzman 6-3 6-4 2-6 1-6 1-1 Norrie*
Finally! The first two games in this set have been around the 10-minute mark and neither player really has anything to show for it as we're back on serve.
Schwartzman hits a backhand into the net, Norrie celebrates.
*Schwartzman 6-3 6-4 2-6 1-6 1-0 Norrie
It feels as though Norrie has to win this one.
Schwartzman gives him an opening with a double fault. Both these players are getting pretty tired now.
Norrie comes to the net and it doesn't work so well this time as he taps a half-volley long. Deuce again.
*Schwartzman 6-3 6-4 2-6 1-6 1-0 Norrie
But it's break point squandered. The error count is stacking up on both sides of the net. Norrie goes down the line and it's nowhere near in. Deuce.