06:05 PM BST
Murray 3-3 Dimitrov*
The fans on Arthur Ashe are really getting their dollars worth. The average rally length on the Dimitrov serve is nine shots.
But in this service game for Murray, he holds to 15 in a much-needed comfortable hold.
05:58 PM BST
Murray* 2-3 Dimitrov
It has been a very demanding match and this is in the midday heat as well. But the quality of tennis has been very high so far.
Dimitrov continues to use his backhand slice in rallies but a forehand error gives Murray a break point.
Timely first ace of the match by Dimitrov to get back to deuce. Dimitrov holds on to take the lead again.
05:52 PM BST
Watch: Incredible shot by Murray
05:51 PM BST
Murray 2-2 Dimitrov*
Dimitrov is using the backhand slice down the line a lot and it is causing Murray some trouble. Another Murray forehand error gives Dimitrov a break point.
Big 122mph serve from Murray to save break point. Murray complains that he can’t see the ball due to the shade. Most of the service breaks have come from the far side.
Break point Dimitrov after a 22-shot rally. Dimitrov slices a backhand into the net, deuce. We are approaching the 10 minute mark now.
This has been a very physical start to the match. What an effort from Murray to finally hold and get level.
05:37 PM BST
Murray* 1-2 Dimitrov
The ball striking from both players has been pretty impressive. The players have noted that the court plays a bit quicker during the day compared to the evening.
Murray hasn’t found his range yet as he sends another forehand long, 30-15. But a double fault and an overhead smash long from Dimitrov gives Murray a break back chance.
Opportunity for Murray to pass Dimitrov at the net with his backhand but the ball sails long. That was a bad miss.
Rally of the match so far, Murray dictates from the baseline, pushing Dimitrov wide and eventually the Bulgarian nets a sliced backhand.
Dimitrov saves the break point when his forehand catches the baseline and Murray can’t get the ball back in play.
We pass the 11 minute mark and neither player is yet able to win this game. Incredible hustle from Dimitrov, Murray must think he’s won the point at least three times but the Bulgarian holds his nerve to win it.
Oh my word. Remember this man has a metal hip but he sprints to a ball that has clipped the net, gets there and angles the ball over the net for a winner. Unreal.
Dimitrov backhand volley into the net and Murray finally breaks after 15 enthralling minutes.
05:20 PM BST
Murray 0-2 Dimitrov*
A couple of errors from Murray means he slips to 0-30. A forehand into the net by Murray means he is in immediate trouble on serve as he faces three break points.
Murray’s movement looks a bit sluggish and he nets another forehand to concede the break.
Not the best start from the three-time grand slam winner.
05:16 PM BST
First Set: Andy Murray* 0-1 Grigor Dimitrov (*denotes next server)
The Arthur Ashe stadium is the biggest in the world but with its roof, it creates a rather annoying shade in the middle of the day. So 80 per cent of Murray’s side of the court is covered.
Dimitrov holds comfortably to 15 to start the match.
05:07 PM BST
05:03 PM BST
Boulter loses first set
After failing to take three set points, Boulter is broken in the very next game and Wang serves out the set to love, winning it 7-5.
Boulter is on the back foot on Court 5.
04:55 PM BST
Boulter squander three set points
After breaking back, the British No 1 earns herself two set points at 4-5 but fails to take them.
She gets a third set point after a cross-court forehand winner but can’t take it after netting a forehand.
04:48 PM BST
First set Draper
The young Briton has made an excellent start against Hurkacz, taking the first set 6-2.
Draper has looked assured, aggressive and patient. This would be a major scalp for him if he gets the job done.
04:39 PM BST
Swiatek & Murray in mixed doubles?
04:30 PM BST
Contrasting starts for Draper and Boulter
Out on Court 5, Boulter is down a break at 2-3 to Yafan Wang while on Court 12 Draper has made a confident start against 17th seed Hubert Hurkacz, breaking to lead 2-1.
04:17 PM BST
A taster of what could be in store between Murray and Dimitrov
04:10 PM BST
US Open day four order of play
Arthur Ashe Stadium
5pm UK time (12pm local)
Andy Murray (GB) v 19-Grigor Dimitrov (Bulgaria)
Yanina Wickmayer (Belgium) v 17-Madison Keys (U.S.)
Not before 7pm UK time
Patricia Maria Tig (Romania) v 3-Jessica Pegula (U.S.)
Louis Armstrong Stadium
4pm UK time (11am local)
Lorenzo Sonego (Italy) v 6-Jannik Sinner (Italy)
Jodie Burrage (GB) v 2-Aryna Sabalenka (Belarus)
26-Elina Svitolina (Ukraine) v Anastasia Pavlyuchenkova (Russia)
Not before 7pm UK time
13-Daria Kasatkina (Russia) v Sofia Kenin (U.S.)
3-Daniil Medvedev (Russia) v Christopher O’Connell (Australia)
Find the rest of Thursday’s schedule here
04:00 PM BST
US Open Day four
Hello and welcome to day four of the US Open with six Brits in action at Flushing Meadows.
Andy Murray headlines the action as he faces Grigor Dimitrov in the opening match on Arthur Ashe Stadium. An intriguing sub-plot to the showdown is that Dimitrov is being coached by Dani Vallverdu and Jamie Delgado, who have both worked with Murray. But the three-time US Open champion insists he isn’t worried.
“I’ve played quite a lot of matches against ex-coaches. I think I’ve only lost once,” he said. “So, yeah, I’ve said this a lot: it’s not just with me, but with tennis in general, certain things look sort of easy from the outside, strategy-wise or tactically against lots of players.
“Once you get on the court, it’s not always that easy to just go out and execute it. It’s difficult. Shots that maybe look like they’re easy to attack, when you’re out there, it’s not quite the same.
“I mean, it probably should be a big advantage for him to have two guys that have worked with me over the years.”
Elsewhere, our coverage begins with updates on Katie Boulter and Jack Draper, who are also in second-round action.
Jodie Burrage, Cameron Norrie and Dan Evans also play today are looking to keep the British tennis flag flying in New York.
“Having other Brits do well in the draw’s amazing for British tennis,” Draper said. “You always say it, but we can all push each other to be better. I don’t think there should be any difference.
“Seeing other players do well that I’m training with on a daily basis makes me really happy because I see what they’re going through, their journey. I wish them all the best and hopefully we can all support each other moving forward in big tournaments like this.”