Gigi Salmon
BBC Sport tennis commentator

Galfi started playing tennis at the age of five because her father had two tennis courts. That's handy isn't it?

Dalma Galfi sees out the first set at the first opportunity with a lovely backhand down the line.

Harriet Dart will be regretting that slow start, but certainly improved as the set went on. She'll be wanting to land that first serve more often though.

Courtney Nguyen
WTA reporter on BBC Radio

It's been a very good comeback from Dart. Scores can go very quickly on these courts. It's a very good effort from Dart to keep that scoreboard pressure on and stay within striking difference. It's really important to force Galfi to serve this out.

On her serve, Dart moves 30-0 up but then puts too much power behind a forehand and it soars deep over the line. She then double-faults, giving Galfi a sniff of another break. Her first serve success rate is only 33% at the moment.

She's able to hold though. Galfi will serve for the set.

Naomi Broady
British player on BBC Radio 5 Live

I think Murray was referring to a tough year for Berrettini. He has been out and not as match fit as he would be at this time of year. The fact he has dropped a set today shows me he's at a human game-style and level. If Andy plays as aggressively as he did today it will be difficult for anyone

Harriet Dart has found her feet in this match, holding to love after that break back.

Dalma Galfi holds her serve in the next game and is one away from sealing the first set, but does a determined Dart have other ideas?

There's a glimmer of hope for Harriet Dart in the first set as she gets a break back.

She needs two break points to do it, sending over a return that Dalma Galfi can only deflect out on her own side of the net.

Murray will face either 13th seed Matteo Berrettini or French world number 119 Hugo Grenier next. Berrettini is 2-1 up and it's on serve in the fourth set currently.

Asked about a possible meeting with Berrettini, Murray said: "He's had a bit of an unlucky year.

"I know he got Covid at the beginning of Wimbledon. When he has been on the court he's done really well.

"We played a tough three-set match in Stuttgart. I'm expecting it to be really difficult but if I play well and my return's on point then I've got a good chance."

Dalma Galfi has not allowed Harriet Dart to settle one bit, and it doesn't help that some sort of rattling audible on court is distracting the Brit.

That said, Dart does now have a game on the board, with a hold to 15 wrapped up with an ace.

After the previous match, the court clean-up was still taking place when Dart and Galfi arrived on court. Turns out they've missed some, as the chair umpire asks spectators to pick up any rubbish they see around them to stop them noisily bouncing around in the wind.

Murray is back working with coach Ivan Lendl and he says that brings "confidence".

"There's a lot of belief in the relationship because of results we've had in the past.

"I trust that if I play with a game-style he wants me to that will bring me success.

"He knows what it takes to win and perform well at this tournament. It's great to have him back."

Andy Murray said after reaching the third round of the US Open for the first time since 2016: "Physically this is the best I've felt in the last few years. My movement is by far the best it's been in a long time. I'm getting closer to where I want to be and hopefully I can have a deep run here."

Naomi Broady
British player on BBC Radio 5 Live

I think this match forced him to be more aggressive, which is what Lendl wants him to do. He's alive - and he has another round.

This is not going well for Harriet Dart.

She finds herself a double break down against Dalma Galfi and has picked up just three points so far, interspersed with two unforced errors and a double fault.

Murray, who has been keeping a close eye on his liquid intake because of cramping issues, celebrates his win by lining up his four empty water bottles next to his chair. Presumably a quick count that he's had his allotted amount.

We'll bring you his on-court interview as soon as possible.

Naomi Broady
British player on BBC Radio 5 Live

I feel like in this match today Murray has turned a corner. If he kept working he would get through.

Ouch.

Emilio Nava looks dangerously close to doing the splits as he slides to try and reach Murray's drop shot. Even more painful because he doesn't get there.

Murray has three match points.

And another one.

Another stellar return pushes Emilio Nava to hit the ball out and Andy Murray will serve for the match next.

Nava looked so close to a hold, but not close enough.

Emilio Nava follows up a 129mph ace with... a double fault.

Deuce.