Day seven of Wimbledon as singles fourth round gets under way
Defending champion Carlos Alcaraz beats Andrey Rublev 6-7 (5-7) 6-3 6-4 6-4
He will play GB's remaining singles hope Cameron Norrie next after he earns epic five-set victory over Nicolas Jarry
World number one Aryna Sabalenka wins 6-4 7-6 against Elise Mertens
Britain's Sonay Kartal beaten 7-6 (7-3) 6-4 by Anastasia Pavlyuchenkova
Electronic line-calling system fails at crucial moment in first set
Karen Khachanov, Taylor Fritz and Laura Siegemund all progress to quarter-finals
Image source, PA MediaThat error with the electronic line-calling system is going to be a hot topic for the rest of the day.
Umpire Nico Helwerth was quickly on the phone to try and get the issue resolved.
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Jarry 3-3 Norrie*
Apart from that first game when Cameron Norrie saved a break point, the server has been completely dominant.
Image source, Getty Images*Kartal 6-7 (3-7) 0-0 Pavlyuchenkova
Naomi Broady
British player on BBC Radio 5 Live and BBC Sounds
I do often feel that fortune favours the brave in tie-breaks.
If you can step up and just be that little bit more aggressive, because your opponent might be holding back five percent, you just have that bit more time on the ball.
Anastasia Pavlyuchenkova was really being brave there. She got her racquet speed up and started to go body.
*Jarry 2-3 Norrie
That's another easy hold of serve for Cameron Norrie, who is likely to move back into the top 50 in the world if he wins today.
*Kartal 6-7 (3-7) 0-0 Pavlyuchenkova
Image source, Getty ImagesAnastasia Pavlyuchenkova wraps up the tie-break and takes a dramatic first set.
It feels like justice has been served after that error with the electronic line calling system denied Pavlyuchenkova the chance to lead 5-4.
*Kartal 6-6 (3-6) Pavlyuchenkova
Naomi Cavaday
Former British tennis player on BBC TV
You can really feel the edginess in this match; the crowd are feeling the tension as well. Pavlyuchenkova is doing well to return the strength of Kartal.
Kartal is staying cool under the pressure.
*Kartal 6-6 (3-6) Pavlyuchenkova
Sonay Kartal can't close the gap any further and is now facing three set points.
It may not be glorious sunshine, but the most important thing is that it is dry again.
That means we can get going again on the outside courts.
In the other women's fourth-round singles match that is currently under way, Germany's Laura Siegemund has managed to get an early break against Argentina's Solana Sierra on court two.
There is also plenty of action in the doubles and junior tournaments.
A notable name in the girl's singles sees Mimi Xu - who lost to Emma Raducanu in the opening round of the women's event - up against American Thea Frodin and is serving for the match on court 12.
Kartal 6-6 (3-4) Pavlyuchenkova*
Anastasia Pavlyuchenkova puts Sonay Kartal on the backfoot with a booming forehand but the Briton returns and hangs on to win the point.
A wide serve from Kartal skips up and leaves Pavlyuchenkova unable to return.
Jarry 2-2 Norrie*
A couple more aces by Nicolas Jarry and it's a hold to love for the qualifier from Chile.
*Kartal 6-6 (1-4) Pavlyuchenkova
Sonay Kartal strikes back.
The Briton wipes off one of those mini-breaks but can't close the gap any further when a baseline return is long.
Kartal 6-6 (0-3) Pavlyuchenkova*
Image source, Getty ImagesAnastasia Pavlyuchenkova keeps the momentum going with a mini-break for 2-0 lead.
The Russian benefits from another enforced error to take complete control of the tie-break with a double mini-break.
*Jarry 1-2 Norrie
Tim Henman
Former British number one on BBC TV
Cam Norrie seems in a great place right now. He has got a great team around him and he is doing what he does well.
He stays in the rallies, he is not over-pressing, he loves that atmosphere and he feels like it is a bit livelier out on Court One and he seems to be having success out there.
I think we are all pretty happy he can continue there and if he can get through this round then he will definitely be on Centre Court.
*Kartal 6-6 (0-1) Pavlyuchenkova
Sonay Kartal puts a forehand long and Anastasia Pavlyuchenkova is on the board in the tie-break.
*Jarry 1-2 Norrie
Both players are striking the ball well in the early going.
Cameron Norrie tries to get Nicolas Jarry moving around the court as much as possible and holds more comfortably this time for a 2-1 lead in the first set.
Image source, Getty ImagesKartal 6-6 (0-0) Pavlyuchenkova*
Anne Keothavong
Former British number one on BBC TV
I am full of admiration for Pavlyuchenkova and how she is handling this situation. She is staying calm and focused out here. Most people would not have been able to handle it as well as she is.
Kartal is doing a great job at making Pavlyuchenkova move forward and play that volley. You are sensing the uncertainty from Pavlyuchenkova whenever there is a short ball.
Kartal 6-6 Pavlyuchenkova*
Sonay Kartal quickly overcame her Centre Court debut nerves after a couple of games in this opening set.
She's now serving to stay in the first set. Can she keep those nerves at bay?
Kartal gets to 40-15 without any drama and an ace seals the hold to take us to a tie-break.
*Kartal 5-6 Pavlyuchenkova
Naomi Broady
British player on BBC Radio 5 Live and BBC Sounds
Two serves, two missed returns.
These are good quality serves from Sonay Kartal. She is really hitting her spots at the moment.
Jarry 1-1 Norrie*
Nicolas Jarry is 6ft 7in and a BIG server. Breaking serve will be a tough ask for Cameron Norrie today.
Making the points longer is probably Norrie's best hope, despite Jarry's outstanding power, and the Briton gets the better of a couple of extended rallies to get to 30-30.
However, a 132mph ace and a tremendous serve-and-volley pick-up earn Jarry his first game of the match.
Image source, Getty Images*Kartal 5-6 Pavlyuchenkova
No break points to deal with this time.
Anastasia Pavlyuchenkova gets the hold to 15 and is guaranteed at least a tie-break in this opening set.
