Combination of quick, snappy serves from Katie Boulter and when the first serve goes in it's proving tricky for Danielle Lao. Boulter edges to 40-0 and then challenges a call - and for the second time in a row, she gets it right! Hawk Eye says that serve kissed the chalk and Boulter holds to love.

Jonathan Jurejko
BBC Sport at Wimbledon

The moment he’s been dreaming of.

Wimbledon stands to welcome Sir Andy Murray.

The British former world number one waves to the crowd as shouts of ‘Come on Andy’ ring in his ears.

Image source, BBC Sport

Andy Murray has the ball in his hand and he starts us off...by smashing down an ace with his opponent not moving.

Hip problems. Groin problems. What next in the Andy Murray story?

One thing for certain is it's absolutely brilliant to see him back where he belongs - Centre Court in the sunshine.

As always get involved with your thoughts on tonight's action - with Andy Murray back in singles action at Wimbledon for the first time in four years.

Tweet us using #bbctennis to get involved.

It was there to be hit! Katie Boulter worked it so well and the ball sat up in the middle of the court, ready for the Brit to put away, but she just gets her footing wrong and tugs a forehand into the tramlines for 30-15. Lao holds from there, and asks for a water at the change of ends.

Image source, Getty Images

So who is the man standing in Andy Murray's way on his return to singles action at SW19?

Nikoloz Basilashvili is the 24th seed at Wimbledon this year and clinched his fifth ATP Tour title last month when he won the BMW Open, his second title this year after also winning in Doha.

The Georgian arrives at the All England Club having reached the semi-finals in Halle last week, losing to Andrey Rublev, and enjoyed his best run at Wimbledon when he reached the third round in 2015.

The 29-year-old, whose father was a dancer in the Georgian national ballet, face Murray in a competitive match for the first time.

Jonathan Jurejko
BBC Sport at Wimbledon

The last time Andy Murray’s face was on the Wimbledon scoreboard - without that of a doubles partner alongside him - came four years ago.

The last time the Scot played on this court by himself he was barely able to walk, limping around on one leg to somehow take Sam Querrey to five sets before losing.

What he has been through since would have forced most other players into retirement.

Not Andy Murray. Where will this latest comeback - at the age of 34 - take him?

I don’t think he knows. Let’s enjoy it, whatever happens.

Image source, BBC Sport

The hero returns. A huge round of applause from the Centre Court crowd. This is who they all want to see.

Andy Murray has provided some brilliant moments over the last 15 years for tennis fans, what has he got for us today? A tentative wave to the fans and we've got 7,500 in there.

"Come on, Katie!" Is the cry from the crowd, as the 24-year-old sends down a string of powerful serves to hold and level up in the deciding set.

And Katie Boulter takes it this time, throwing down a big serve and following it up with a sweeping forehand after Danielle Lao's return drops into mid-court. The American responds with a sensational return off the next, but Boulter sizzles down an ace. It's like a boxing match out there. 30-30.

Lengthy exchange as Katie Boulter stretches side to side, hanging in there, before undercooking from the baseline. She follows up with a double fault, although will challenge this one... and what a challenge! Just nipped the chalk, great shout.

Image source, Getty Images

Andy Murray enjoyed his last Wimbledon visit, competing in the mixed doubles alongside Serena Williams, but returning to the singles draw is a different ball game.

The two-time champion limped off Centre Court following a quarter-final defeat in 2017 and has not been back in that draw since - the hip problem that had bothered him throughout the tournament resulted in surgery in January 2018 and again in January 2019.

The second operation - a resurfacing procedure that means Murray has a metal hip - came shortly after he tearfully announced at the Australian Open he thought the problem would force his retirement.

While the surgeries have derailed the three-time Grand Slam champion's career, they have not ended it and Murray made his singles comeback at Queen's last week following a niggling groin injury,

"I didn't know if I would be back playing singles," he said. "Now I'm hoping my body holds up and gives me a chance to compete."

The big question is how fit is Andy Murray after some injury-hit years?

Here's what the man himself has to say.

And Katie Boulter takes it first time!

The Brit seizes on a short ball with a ferocious forehand that skips beyond Danielle Lao.

This deciding set is back on serve.

Katie Boulter is digging in here and a forehand that lands just inside the baseline causes Danielle Lao problems, forcing the 30-year-old into the tape. Two break back points.

It's been a long time coming.

Andy Murray has not played a singles match at SW19 since 2017, because of a series of injuries and the postponement of last year's event because of the coronavirus pandemic.

But four years after his last appearance in the men's main draw, the Scot returns to take on Georgian 24th seed Nikoloz Basilashvili.

It's BBC Two right now for the Andy Murray v Nikoloz Basilashvili match, which starts soon.

Urgh. A Katie Boulter groundstroke goes begging and it hands Danielle Lao a chance to break at 30-40. And she gets it! The American forces the British hopeful deep and Boulter can only find the tape.

Boulter, from having four break points in the previous game, is broken herself.

Some quotes from Sloane Stephens, who has knocked out Petra Kvitova. Stephens says: "Seeing the first round I thought 'oh boy this will be a difficult task'.

"Coming here knowing we'd have fans here was really incredible. It's so special, not playing on grass for two years and to have my first match back here on Centre Court it's special.

"I love grass. It's been a couple of years since I've had a good result on grass. Here is a good start beating a really good grass court player."