Coco Gauff will face the toughest challenge of her Wimbledon campaign when she takes on Simona Halep on ‘Manic Monday’, with British number one Johanna Konta also in action.

After a day off on Sunday, play will resume as Konta plays Petra Kvitova.

Elsewhere in the women’s singles, world number one Ashleigh Barty – who is yet to drop a set – plays Alison Riske.

Defending champion Novak Djokovic and former winners Roger Federer and Rafael Nadal also return in the fourth round.

Djokovic will take on Frenchman Ugo Humbert on Court One, while on Centre Court, eight-time champion Federer faces Italian Matteo Berrettini and Nadal plays Portugal’s Joao Sousa.

Seven-time Wimbledon champion Serena Williams plays Spain’s Carla Suarez Navarro and Karolina Pliskova faces fellow Czech Karolina Muchova.

• Nadal & Federer into Wimbledon fourth round
• Williams & Kvitova ease into round four
• Murray & Williams win on mixed doubles debut
• ‘I hope Beyonce saw that!’ – Gauff’s wish after winning run continues

‘It’s cool that Michelle Obama knows I exist’

Week one of the Championships was a whirlwind for 15-year-old American qualifier Gauff, beating one of her “idols” Venus Williams before victories over Magdalena Rybarikova and Polona Hercog followed.

Twelve months ago, she was knocked out in the quarter-finals of the juniors competition at SW19 but has now become a household name around the globe, the world mesmerised by her journey.

Yet for this teenager, who can only enter 10 professional tournaments between her 15th and 16th birthdays, it’s the social media messages from Michelle Obama and Jaden Smith that have given her the biggest smile.

On the tweet by Obama, Gauff – who describes herself as “weird” and “goofy” – said: “I was super excited. She’s one of my role models, so it was just cool to see that she knows I exist.

“We don’t talk personally. I don’t have her number or anything. I would like that.”

In former world number one Halep, Gauff faces a player who, like herself, has dropped just one set in the tournament so far. Halep, though, has experience of the latter stages at Wimbledon, reaching the semi-finals in 2014 and two quarter-finals since then.

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‘Kvitova will be very inspired’ – Konta ready for battle

British number one Konta, who reached the Wimbledon semi-finals in 2017, faces Czech two-time Wimbledon champion Kvitova in the fourth round. It is their fifth meeting, but only their second at a Grand Slam.

They have twice met on grass, the latter occasion coming in Birmingham last year, with Kvitova winning in straight sets.

Kvitova, who won Wimbledon in 2011 and 2014, has yet to drop a set this campaign and Konta said she was looking forward to playing a “great champion”.

“I’m going to be coming up against a very, very inspired and very, very tough Petra,” said Konta.

“She’s also been playing incredibly well in the past couple of years.”

Kvitova acknowledged the British support for Konta, adding it would be a “difficult match”.

“Jo, I think for her, the grass is really going in the good way when she’s playing flat shots from both sides, especially from the backhand,” she said.

“I think she likes to play on the grass. Of course, the crowd will be on her side. I know what she’s able to do.”

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Serena Williams says she felt like she wanted to watch her highly-anticipated Wimbledon mixed doubles match with Andy Murray rather than play in it – and will try to see a video of their win.

American Williams and Britain’s Murray entertained Centre Court with a 6-4 6-1 win over Germany’s Andreas Mies and Chile’s Alexa Guarachi.

“This match was so hyped that I want to see it,” Williams, 37, said.

“We have a lot we want to get better on as a team.”

Williams and the Scot, 32, made the dream start to a blockbuster partnership that has been one of the main talking points at the All England Club this fortnight.

• Murray and Williams start with impressive win
• Konta into last 16 as Evans loses epic
• Fognini apologies over bomb outburst

Anticipation had been high for their first appearance together, which was delayed until Saturday evening after Friday’s play on Centre Court and Court One moved the match back a day.

Eventually, it was played on Wimbledon’s main 15,000-seat arena in front of a healthy crowd in dwindling light, with those cheering on Murray and Williams soon rewarded.

The illustrious pair, who have 26 Grand Slam singles titles between them, had too much quality for the battling Mies and Guarachi as they won in one hour and 16 minutes.

But the intense focus in the build-up left even Williams, who reached the last 16 in the singles earlier on Saturday, feeling “a lot” of pressure.

“I thought, I have to do well because this match is so hyped that I want to see it,” she said. “I didn’t even want to be in it, I kind of just wanted to watch it. Maybe I’ll try to get a video of it or watch it somewhere.

“Overall I think I was able to handle my nerves pretty good, do better than I thought I was going to do.”

Murray and Williams gelled quickly in their first outing, breaking serve in the first game on their way to winning the opening set 6-4, before being more clinical in a one-sided second set.

They will meet 14th seeds Fabrice Martin and Raquel Atawo in the second round next week.

Murray only made his comeback from serious hip surgery last month, while Williams’ playing time this year has been hampered by a knee injury.

“We created lots of chances in the first set, but maybe weren’t as clinical as maybe we’d like to be,” Murray said. “That comes with matches a little bit. Neither of us have played much recently, but that will come.”

Williams added: “We have a lot we want to get better on as a team. I think we did great for the first day. We just want to keep it up.”

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Johanna Konta is the only Briton left in the Wimbledon singles after staging a determined comeback against American Sloane Stephens to reach the last 16.

The 2017 semi-finalist had trailed by a set and was under pressure on her serve before regrouping to win 3-6 6-4 6-1.

Compatriot Dan Evans had many chances against Portugal’s Joao Sousa but lost 4-6 6-4 7-5 4-6 6-4 in an epic battle.

Fellow Briton Harriet Dart was earlier overwhelmed 6-1 6-1 by Australian world number one Ashleigh Barty.

Konta will face Czech 2011 and 2014 champion Petra Kvitova for a place in the quarter-finals on Monday.

“I just kept plugging away more than anything,” Konta told BBC television.

“I was fully prepared to not be coming back in that second set because she really was playing well. I was really pleased I could keep battling, I was pleased I could mix things up and I did a good job in getting her out of that zone.”

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Konta turns frustration into fightback

Konta had dominated Stephens in a 6-1 6-4 victory in the French Open quarter-finals last month, playing some of the best tennis of her career.

But the 28-year-old struggled to find her rhythm and became frustrated with herself at times against the 26-year-old American on Court One.

After losing the first set when she netted a backhand, Konta found herself under increasing pressure on her serve in the second.

She showed glimpses of the mental negativity that has hampered her in the past, shooting glances at her coach Dimitri Zavialoff and berating herself for her wayward shots.

But she then translated that into fighting spirit in the fifth game of the second set when she was taken to deuce six times and saved three break points before eventually holding.

That proved to be the start of a comeback as she went on to break the American in the 10th game to take the set and force a decider.

From then on she did not look back – the overcooked forehands found the lines and the head-shaking at changeovers became fist pumps as she won five games in a row from late in the second set to surge ahead in the third.

And her victory was complete when Stephens hit long with just over two hours on the clock.

“I’m really pleased that I’ve been able to make it to the second week in two successive Grand Slams. I’ve never been able to do that before,” Konta said.

Evans lets chances slip

Evans had prepared for his third-round match by having a one-hour hitting session with 20-time Grand Slam champion Roger Federer on Friday and he started well with a break in the opening game.

He continued to put Sousa’s serve under pressure, carving out but failing to convert four other break points, and dominated to take the first set.

He went a break up early in the next two sets but both times allowed the Portuguese to get back into the sets with some excellent net play. Evans double-faulted to gift the second set to Sousa and then hit wide to hand over the third.

Evans again broke early in the fourth and let the advantage slip but this time he clawed his way back from brink when Sousa was one game from victory, delivering a cross-court forehand winner that sent the Court One crowd to their feet.

With the light fading, the new roof was closed on the court for the fifth set, and Evans once again went a break up but let that slip in the next game.

He went match point down on his own service game and with the clock ticking just past four hours, he netted to send Sousa into a last-16 encounter with 18-time Grand Slam champion Rafael Nadal.

“It is a hard one to take,” Evans, 29, said. “It’s just disappointing to lose such a tight one.”

He was keen to keep perspective, having enjoyed a successful grass-court season with two titles, and when asked how long it would take for him to get over the defeat he replied bluntly: “About 45 minutes.

“It is not the end of the world. It just hurts but what can I do? Feeling sorry for myself isn’t going to help.”

Dart learns ‘tough lesson’

Dart exits with her head held high after a tournament that marked her first back-to-back wins at tour level.

The world number 182 had said beforehand that the match against French Open champion Barty would provide her with a good measure of where her tennis was at.

Having lost 6-0 6-0 to Maria Sharapova in her last match against a high-profile player on a Grand Slam main show court at January’s Australian Open, she can be comforted by the fact she got herself on the scoreboard in the 53-minute defeat by Barty.

The Australian – who has been beaten by only one player outside the world’s top 10 this year – dropped just three points on serve in the first set, moving a double break up before the world number 182 was finally able to hold.

Dart went a double break down at the start of the second set before showing signs of her form of previous rounds, reaching four break points before allowing Barty to hold.

“It’s a good learning curve for me,” she said. “She played great. She didn’t let me in the match at all.

“It’s a tough lesson to learn. It’s been a great tournament for me. I should take a lot of positives from it.”

Barty, who is the first Australian to reach the women’s singles fourth round at Wimbledon since 2010, said the young Briton had a bright future.

“Harriet is going to have a fantastic career. I know she will play out on Centre Court again soon,” said the Australian, who will play American Alison Riske in the fourth round.

During Wimbledon, six-time Grand Slam doubles champion Jamie Murray is writing a column for BBC Sport. In his second, he discusses his mixed start to the tournament, brother Andy’s partnership with Serena Williams, and his ambition to help the tennis stars of the future.

My men’s doubles partner Neal Skupski and I lost in the first round of Wimbledon on Friday and it was a disappointing result. We got outplayed by Ivan Dodig and Filip Polasek and lost 2-6 7-6 (7-2) 3-6 6-1 6-4.

Those guys played really well. They played very aggressively and were serving big, so we just got overrun a bit, which was unfortunate.

Play had started on Thursday but was suspended because of bad light, and it was disappointing for us not to be able to finish the match then because we were looking stronger, but that was just bad luck on our part and it didn’t work out so well for us.

Unfortunately, it was just one of those things. It’s only really at Wimbledon that it happens – at other tournaments, it only occurs if there are strong winds or you get rain. It’s happened to me a few times before and it is never ideal because you have to start again from scratch; it’s a new day, new feelings.

It also gives the players of both teams time to speak to their coaches, and to get a better handle on what has been happening in the match.

It changes the momentum in a way because it’s a fresh start. We were just unlucky because I think we were the only court that didn’t finish that night.

Neither Neal nor I felt that we did a lot wrong. It’s a new partnership and I think we both felt good together on the court.

We didn’t have great results instantaneously but that doesn’t mean we’re not going to be a good team and have a successful partnership going forward. We haven’t lost any belief at all in the team. We just have to look ahead now and prepare for the hard court season.

• Jamie Murray progresses in mixed doubles but goes out of men’s competition

‘I’m really happy we won our mixed doubles opener’

Later on Friday afternoon, I had my first round mixed doubles match with my partner Bethanie Mattek-Sands. We beat Joe Salisbury and Katy Dunne 7-5 7-6 (10-8) but it took me a little while to get going because it was pretty soon after the disappointment of the men’s doubles.

Bethanie is great fun, a great character and a great player as well, and she’s a good partner to have in that situation. I was really happy that we were able to get the win and hopefully we will have a good few matches together over the next week.

Moving from clay to grass takes a bit of adjusting. On clay, you’re sliding around, the ball is bouncing up and you’re having to play a lot of balls around shoulder height.

But then you get on grass and you need a lot of small adjustment steps. The ball is bouncing lower so you are using a lot of different, smaller muscles and you need a stability that maybe you don’t need on other surfaces.

You’re able to move the ball around a lot more too. On serve, you can swing the ball a lot more so you get a lot more help from the grass courts than you would on other courts.

I prefer playing on hard courts; that is where I have had all my best results throughout my career. I do like playing on grass, but it’s such a short season and sometimes it feels like it’s over before it’s even started.

‘Andy and Serena playing together is unique’

I think it’s really cool that Andy has partnered up with Serena Williams in the mixed doubles. We didn’t speak about it before it was announced, but it’s great for the event because it puts it in the spotlight a lot more than it normally would be.

You’ve got two greats of the game competing with each other. We never get that at a Grand Slam, so it’s a unique situation.

Hopefully, they can compete hard and play until the end of the tournament because it would be great for the event of mixed doubles.

There was a lot of build-up pre-match and it was fun to see them playing in front of a packed Centre Court on Saturday night.

‘I want to coach when I finish playing’

I have recently launched a YouTube channel because I wanted to document my life as a tennis player, because it’s a very unique life that we live.

I wanted to showcase all the things we have to go through in our daily lives that the public wouldn’t see. They see us on TV hitting tennis balls but they don’t necessarily see what goes into getting us onto the match court in terms of the preparation.

There will also be a lot of instructional videos going up, with tips, advice and tactics on the game, and on training. Singles and doubles are very different and I just thought it would be interesting for people to see how we train.

I would like to coach once my playing career is over, but whether I would like to coach on the Tour, I’m not sure, because I have been travelling for so long.

I would like to help some of the younger players in our country. Not a lot of people have made it to the top of the game and can therefore share their experiences. I certainly feel that’s something I would be passionate and enthusiastic about.

Jamie Murray was speaking to BBC Sport’s Katie Falkingham at Wimbledon.

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