Watch and follow BBC TV and radio coverage of day nine of Wimbledon (UK only)
GB's Cameron Norrie comprehensively beaten 2-6 3-6 3-6 by defending champion Carlos Alcaraz
World number one Aryna Sabalenka wins 4-6 6-2 6-4 against Laura Siegemund in quarter-finals
Amanda Anisimova wins 6-1 7-6 (11-9) against Anastasia Pavlyuchenkova
Taylor Fritz first player through to singles semi-finals, winning 6-3 6-4 1-6 7-6 (7-4) against Karen Khachanov
Britain's Alfie Hewett starts wheelchair title defence with 6-1 6-2 win over Daniel Caverzaschi, Gordon Reid also through
Norrie 2-5 Alcaraz*
Encouraging cheers from the Centre Court crowd as Cam Norrie thumps a serve down the T to complete a hold to 30.
A comeback in this first set seems highly unlikely but just getting that game under his belt should give him some confidence to take into the rest of the match.
Anisimova 6-1 6-5 Pavlyuchenkova*
Sonia Oxley
BBC Sport at Wimbledon
This looked like it was going to be over about 15 minutes ago but there's quite a lot of shuffling in seats as if people seem to sense that we could be settling down for quite a bit longer.
Anisimova greets her hold with an almighty roar, she really needed that.
Anisimova 6-1 6-5 Pavlyuchenkova*
With a double fault and an unforced error, Amanda Anisimova finds herself 0-30 down.
However, with a couple of bruising forehands, she levels the game before Anastasia Pavlyuchenkova nets a return for 40-30.
As she seals the game to once again move to within touching distance of the semi-finals, Anisimova lets out a roar of her own.
Jonathan Jurejko
BBC Sport senior tennis reporter at Wimbledon
I mean... wow. Alcaraz has got every shot in the locker - including the most unorthodox ones.
The way he whipped that forehand winner over and past Norrie's right shoulder exemplified his shot-making skills.
Coach Juan Carlos Ferrero was impressed judging by the way he uses his hand to mimic the loopiness.
Looked like he was doing paper aeroplanes without the paper.
*Norrie 1-5 Alcaraz
Laura Robson
Former British number one on BBC Radio 5 Live and BBC Sounds
Alcaraz has seriously stepped it up a the moment. His first serve has come out from wherever it has been sleeping.
Just about everything he is touching at the moment is touching the line.
*Norrie 1-5 Alcaraz
Image source, Getty ImagesThis set looks like it'll be over very soon.
A 136mph ace puts Carlos Alcaraz 40-0 up and he crunches a backhand winner to wrap up the most comfortable of holds.
Norrie 1-4 Alcaraz*
Jonathan Overend
BBC Radio 5 Live commentator
Alcaraz has turned on the style a bit in the last few minutes.
This is not the way Norrie intended the opening set to go in this match.
Norrie 1-4 Alcaraz*
Andrew Castle
BBC Sport tennis commentator on BBC One
Alcaraz doesn't give anything loose. We know what we are dealing with when it comes to him. Along with Sinner, he is building the bridge to the future.
The Spaniard is in total control here.
Norrie 1-4 Alcaraz*
Image source, Getty ImagesStunning from Carlos Alcaraz but big, big trouble for Cam Norrie.
With two points for a double break, Alcaraz runs along the baseline and lifts the ball over Norrie at the net, getting the dip he needs at the last moment.
The ball clips the baseline and Alcaraz is in complete control of this first set.
*Anisimova 6-1 5-5 Pavlyuchenkova
Pavlyuchenkova screams as she directs a forehand winner down the line for her second advantage of the game.
Amanda Anisimova hits her next return long and we're back on serve.
Anisimova 6-1 5-4 Pavlyuchenkova*
Image source, ReutersAnastasia Pavlyuchenkova saves the first point, Amanda Anisimova hitting the net with a forehand after a baseline battle. Had it gone over, Pavlyuchenkova would have been nowhere near it.
Next point, she brings out a teasing drop shot and although Anisimova gets there, she once again finds the net.
Deuce.
*Norrie 1-3 Alcaraz
Greg Rusedski
Former British number one on BBC Radio 5 Live and BBC Sounds
Alcaraz plays the most important points and pressure points better than anybody else on the planet at the moment.
Jonathan Jurejko
BBC Sport senior tennis reporter at Wimbledon
Well, that's dampened the mood.
Norrie really needed to get ahead on the scoreboard and whip up the home fans.
Instead they are sat back and admiring the control Alcaraz is showing after that early scare.
*Norrie 1-3 Alcaraz
Clinical from Carlos Alcaraz.
Down 0-30, he's cool as a cucumber again. His whipped forehand clips the line to get him going and he breezes through the next few points.
A crisp forehand winner consolidates the break.
Anisimova 6-1 5-4 Pavlyuchenkova*
Even with the break, Anastasia Pavlyuchenkova is serving to stay in the match and now she's facing two match points after hitting the ball millimetres long.
Norrie 1-2 Alcaraz*
John McEnroe
Three-time Wimbledon singles champion on BBC One
Alcaraz is standing far outside the tram lines when receiving serve. If you don't hit your serve as a leftie, he is going to take advantage.
Norrie has got to go after Alcaraz's second serves and make the most of him being careless at times.
Neither player is clicking quite yet.
Anisimova 6-1 5-4 Pavlyuchenkova*
Sonia Oxley
BBC Sport at Wimbledon
This crowd just want a contest! It's been too one-sided and so we finally get the biggest roars as Pavlyuchenkova converts a break point when Anisimova is serving for the match.
Norrie 1-2 Alcaraz*
Image source, Getty ImagesHaving saved four break points, Carlos Alcaraz comes out and breaks Cam Norrie.
A brilliant backhand return down the line gives the Spaniard two break chances.
Norrie saves the first with an ace but then double faults to hand the game to Alcaraz.
Anisimova 6-1 5-4 Pavlyuchenkova*
Anastasia Pavlyuchenkova breaks! She's finally converted a break point as Amanda Anisimova hits a cross-court forehand long.
The crowd is up.
*Anisimova 6-1 5-3 Pavlyuchenkova
No, she can't. Amanda Anisimova finds a big serve and Pavlyuchenkova can only just get a racquet on it.
Today at Wimbledon. BBC Sport.
Watch here at 20:00
