Billie Jean King
Six-time Wimbledon singles champion on BBC TV

Alcaraz is the player to beat. He is so imaginative. Every generation gets better and he could go on to be the best player ever.

I hope he continues to love playing and takes advantage of the gift that he has been given.

Amanda Anisimova holds to love for the first time in the match. The penultimate point is the pick of the game, with Anisimova advancing to the net and driving a huge forehand winner.

The pressure is back on Anastasia Pavlyuchenkova.

Image source, Getty Images

What a noise!

Cameron Norrie and Carlos Alcaraz are greeted by an enormous cheer as they emerge onto Centre Court.

The home crowd will surely be backing the Brit but Alcaraz is such a big favourite at the All England Club that the fans would be almost as happy to see him advance.

Image source, EPA

Anastasia Pavlyuchenkova saves both break points and comes through to hold serve, making the most of a couple of uncharacteristically poor returns into the net from Amanda Anisimova.

She needed that hold. It's her turn to pump her first.

John McEnroe
Three-time Wimbledon singles champion on BBC One

Alcaraz will have a crowd against him so he will not be used to that. It will be interesting to see who the crowd will be backing, he will still have some fans.

Cam will be starting to bubble out there. He finds it when he needs it and he has been getting better and better.

Alcaraz is the most skilled player of his age that I have ever seen. That will inspire the youth and will hopefully change things in a positive way.

Amanda Anisimova pumps her fist in celebration. On the run, she's nailed a cross-court backhand beyond the reach of Anastasia Pavlyuchenkova.

She sprays a forehand deep into the corner for 15-30 before a double fault brings up two break points.

Jamie Delgado
Former Great Britain Davis Cup player

Norrie has been playing better and better this year. His forehand is much improved and he is more aggressive on that side. His backhand has always been consistent.

He has never had a Nadal-Federer style where he just plays people off the court. He needs that extra energy from the crowd and he really enjoyed that in his previous match. He loves the atmosphere.

It will be an uphill battle for him however. If Carlos is on it, it's going to be tough to beat him.

Anastasia Pavlyuchenkova is furious after missing another opportunity to get a foothold in this game.

From 40-0, Amanda Anisimova puts a tame drop shot attempt into the net before Pavlyuchenkova bludgeons a cross-court backhand winner.

However, with yet another long return, she surrenders a possible deuce.

Jonathan Jurejko
BBC Sport senior tennis reporter at Wimbledon

Beating 22-year-old Alcaraz is one of the most difficult tasks in the sport right now.

The five-time major champion is on a 22-match winning streak, having claimed the Rome and French Open titles on the clay before heading to Ibiza for a now traditional pre-Wimbledon break.

Norrie, 29, decided to try the same strategy, spending time in Pacha nightclub as well as playing golf and chilling on the beach.

"I was telling my team, let's see if the Carlos method can work because he went to Ibiza and he won Wimby," he told British newspapers., external

"When you come to the court fresh, and you've had a few days on the beach or a few days in the sun relaxing, you feel ready to compete again."

Anastasia Pavlyuchenkova has her hand on her hip as another forehand goes long: 15-all.

She's later pegged back to 30-30 but completes an important hold as Amanda Anisimova fires a down-the-line backhand into the tramlines.

Gary Rose
BBC Sport at Wimbledon

There was more controversy around the electronic line call system at Wimbledon during this afternoon's quarter-final action as a point in Taylor Fritz's match with Karen Khachanov had to be replayed because of a "malfunction" with the technology.

Wimbledon organisers apologised on Saturday after human error led to the system on Centre Court being turned off by mistake and missed three calls during Anastasia Pavlyuchenkova's match with Britain's Sonay Kartal.

This time, 'fault' was erroneously called during play in the first match of the fourth set, with Fritz leading 15-0 after taking the first two sets 6-3 6-4, but losing the third 1-6.

After checking what the issue was over the phone, the umpire said: "Ladies and gentleman we will replay the last point because of a malfunction. The system is now working."

Anastasia Pavlyuchenkova misses two returns off second serves to spurn a promising opportunity after pulling the game back to 40-40.

She clutched her elbow a few times during the opening game of the second set.

The BBC has teamed up with Wimbledon: Tennis Showdown for a tennis-themed adventure on Roblox.

Using BBC Wonder Chase, players will transform into a bouncing tennis ball for a unique two-part quest, featuring vibrant obstacle courses and a Doctor Who-themed tennis match against the Doctor.

Players who complete the quest will earn a virtual TARDIS tennis backpack and a unique tennis hairstyle to personalise their Roblox avatars.

This is free to play across BBC Wonder Chase, external and Wimbledon: Tennis Showdown, external by clicking on the links or on Roblox via PC, mobile, Xbox, and PlayStation.

Image source, Getty Images

World number one Aryna Sabalenka, speaking after beating Laura Siegemund to reach the Wimbledon semi-finals: "That was a real test. I need some time to cool down and recover after this.

"She pushed me so much. After the first set I was looking at my box and thinking, 'book the tickets, we are about to leave this beautiful place'. She played an incredible tournament and match. I'm just super happy with the match and win.

"The atmosphere was another level. Thank you guys for your support, you don't understand how much you helped me to stay in the game and enjoy playing in front of you all."

On Siegemund's style: "It is a smart game. She is really making everyone work against her, you know you have to work for every point.

"It doesn’t matter if you are a big hitter, big server, you have to work, you have to run and to earn the victory. I had to make sure I didn’t show I was annoyed by her, even if I was slightly, I didn’t want to give her that energy."

On having days of and how tough the the second week of a Grand Slam is: "It is tough, but beautiful. If you make the second week, it means you are achieving your goals and dreams.

"It is about balance - hard work is hard work but also you have to do things you enjoy outside of the court and that has helped me enjoy these battles."

Amanda Anisimova starts the second set with a serve into the net and later double faults to bring the game back to 30-all.

However, such is her ground stroke dominance that whenever she does get a serve in, she can set up camp on the baseline and attack on the front foot.

Sonia Oxley
BBC Sport at Wimbledon

Pavlyuchenkova left Court One at the end of that set - she needs to find some energy. Her opponent has too much - she's spent the break jumping around on the baseline.

Jonathan Jurejko
BBC Sport senior tennis reporter at Wimbledon

As he prepares to face Cameron Norrie in the Wimbledon quarter-finals, Carlos Alcaraz does have one losing record against a British player this fortnight.

The Spanish superstar might have been unbeatable on the tennis court - having won the Queen's title before moving confidently into the SW19 last eight - but Sir Andy Murray has been quick to reveal Alcaraz is not as dominant on the golf course.

The pair have been playing together over the past 10 days, with the recently-retired Scot edging a best-of-three contest.

"It's true he beat me. But golf is a sport that is really helpful for me to switch off my mind," Alcaraz said.

"I'm trying to play as much golf as I can on my days off."

Peter Odgers
BBC Sport commentator

A bazooka of a backhand from Anisimova in that game. Some ripping returns from her. She has just dealt with playing a quarterfinal better than her opponent.

Anisimova has not found many first serves but other than that she has been impressive.

Image source, BBC Sport

We're being told Henman Hill is full with watching fans.

Spectators are being prevented on making their way there currently - with Aryna Sabalenka v Laura Siegemund having been so gripping and British hope Cameron Norrie next up against defending champion Carlos Alcaraz, it's little surprise!

Amanda Anisimova wraps up the first set in 27 minutes as Anastasia Pavlyuchenkova loops another forehand long.

The American has out-muscled Pavlyuchenkova and converted three of her four break points.

However, she'll be keen to improve her serve in the second set - her first serve percentage is down at 45%.