Postpublished at 16:02 British Summer Time 3 July 2022
Jonathan Jurejko
BBC Sport at Wimbledon
Cam Norrie comes under pressure for the first time and it is greeted with murmurs of concern from the home fans.
Novak Djokovic wins 6-2 4-6 6-1 6-2 v Tim van Rijthoven
Britain's Cameron Norrie into quarter-finals after 6-4 7-5 6-4 win over Tommy Paul
Venus Williams & Jamie Murray lose 6-3 4-6 6-7 (16-18) to O'Mara/Barnett
GB's Heather Watson defeated 6-2 6-4 by Jule Niemeier in last-16 match
GB's Joe Salisbury and Rajeev Ram through to men's doubles quarter-finals
Third seed Ons Jabeur beats Elise Mertens 7-6 (11-9) 6-4
Jannik Sinner defeats Carlos Alcaraz 6-1 6-4 6-7 (8-10) 6-3
Twelfth seed Jelena Ostapenko beaten 7-5 5-7 5-7 by Tatjana Maria
Michael Emons and Chris Bevan
Jonathan Jurejko
BBC Sport at Wimbledon
Cam Norrie comes under pressure for the first time and it is greeted with murmurs of concern from the home fans.
*Norrie 3-2 Paul
Break point saved!
But Norrie gives away another as his forehand fails to curl back in and instead stays wide.
*Norrie 3-2 Paul
Cam Norrie is playing with such place that the Court One hubbub has hardly died down before he claims a point on his serve.
Tommy Paul looks unbothered as he throws his racket in the air and catches it between serves. As if the backwards cap weren't enough to cement his cool-guy image...
And it seems the relaxed approach is working as the American earns a break point.
Sinner v Alcaraz
Carlos Alcaraz and Jannik Sinner are both trying to reach the Wimbledon quarter-finals for the first time, which would equal their best Grand Slam results, but by reaching the last 16 they have already registered their best performances at SW19.
They have met twice before at Challenger or Tour level, with Alcaraz winning on both occasions - but it is unlikely they will fall out today, whatever the result.
"Well obviously everybody knows the level of Jannik," Alcaraz said after beating Oscar Otte on Friday. "He's a great player. He plays very well here on grass as well. He plays great, very aggressive.
"We are friends off the court so I would say on the grass we are going to have a great rivalry in so many years."
*Norrie 3-2 Paul
Andrew Castle
BBC Sport tennis commentator on BBC One
Cameron produces a relentlessly high standard. He's hitting the ball harder and harder, I have so much respect for him. He is known for having this great engine - his dad was a squash player and his mum a distance runner.
*Norrie 3-2 Paul
Cam Norrie almost sneaks an excellent backhand down the line past Tommy Paul, but the American is onto him.
Norrie comes into the net next and that move works, bringing up 15-15.
Court One is overjoyed by an exchange at the net on the next point but less than pleased that it is Paul who comes out on top.
A Norrie forehand long and some more great work at the net from Paul wraps up a hold for the American.
Sinner v Alcaraz
Two of the most exciting young talents in the men's game go head to head next on Centre Court, when Spanish teenager Carlos Alcaraz, 19, takes on 20-year-old Jannik Sinner, of Italy.
Their fourth-round meeting is the youngest Wimbledon men's singles match - in terms of combined age - in the last 16 or later, since a 17-year-old German by the name of Boris Becker beat a 21-year-old French player called Henri Leconte in the quarter-finals in 1985.
I wonder what happened to them?
Watson 2-6 4-6 Niemeier
German Jule Niemeier speaking on Centre Court after her victory over Heather Watson:
"I can't believe it. I want to say sorry I had to kick out a British player today. The atmosphere was incredible and I want to say thank you to everyone for coming today and supporting us.
"I was nervous - as soon as I stepped on the court I felt pretty confident so I just tried to focus on my game and play point by point. It went well.
"I'm super proud of myself, after playing on Court One and playing a really good match two days ago and coming out again and performing without missing that many balls was pretty good so I'm really happy with today.
"I didn't want to watch the show before the match because I was pretty nervous and I saw all the players I didn't want to see it. It's a special place, one of the biggest courts on tour, the court is so beautiful and I feel so proud to have won here."
Norrie 3-1 Paul*
If you like a good baseline slog, this might be the match for you.
Cam Norrie and Tommy Paul smash the ball back and forth until one of them blinks.
Paul does the most blinking in this game and Norrie holds to maintain his lead.
Watson 2-6 4-6 Niemeier
Harry Poole
BBC Sport at Wimbledon
Huge applause for Heather Watson as she exits Centre Court.
Jule Niemeier draws a laugh from the crowd as she apologises for her win, and what a win that is for her.
Into a quarter-final in only her second Grand Slam. Imagine the feeling!
#bbctennis
Rubes: Absolutely gutted for @HeatherWatson92, external but what a player. Well done her for beating her Wimbledon record in singles.
Andrew: Bad luck Heather
Watson 2-6 4-6 Niemeier
Nick Mullins
BBC Sport commentator at Wimbledon
Well for a young German called Jule Niemeier life is full of wonder right now, for Heather Watson, her best ever run at Wimbledon draws to it's conclusion.
That was a fabulous performance from a player who very few of us knew very much about at the start of the week. She can barely believe it as well.
Norrie 2-0 Paul*
Cam Norrie follows up an opening break with a hold to love which is over in a couple of minutes.
It's all business for the ninth seed so far.
Watson 2-6 4-6 Niemeier
Jule Niemeier will face Tatjana Maria in an all-German quarter-final.
She starts her on-court interview by apologising for knocking out a Brit.
*Norrie 1-0 Paul
OK so if you're a British fan that Heather Watson result wasn't what you wanted.
But dust yourself down and get back in the fight because Cameron Norrie has got off to a great start on Court One.
Norrie batters his opponent Tommy Paul with powerful shots to claim an opening break. Looking good in his first ever Grand Slam fourth round match.
Watson 2-6 4-6 Niemeier
That match may not have gone the way Heather Watson will have hoped, but she can hold her head high after a brilliant singles campaign at the All England Club.
A first time in a Grand Slam fourth round, it's onwards and upwards from here.
Watson 2-6 4-6 Niemeier
Heather Watson doesn't give up without a fight, but is angry at herself when she returns a Jule Niemeier serve into the net at 30-30, but is given a bit of respite as the German finds the net herself. Deuce.
Watson's suffers a broken string as she hands Niemeier a second match point, and a new racquet does the trick as she beats her opponent with a lob. Back to deuce we go.
After another rally, Watson pings a backhand wide and it's match point once again for Niemeier. Third time lucky? Yes.
Jule Niemeier defeats Heather Watson and is through to the quarter-finals.
Watson 2-6 4-5 Niemeier*
Harry Poole
BBC Sport at Wimbledon
Heather Watson gets the crowd going again as she produces a superb lob to stay in the fight. She throws her arms up to the crowd, who respond with huge cheers.
What a time to produce that! She's hanging on in there.
Jonathan Jurejko
BBC Sport at Wimbledon
Whooosh! Norrie starts with a bang as he smacks a forehand winner down the line.
Not the biggest crowd yet on Court One as the fans take a breather after the first match.
But those who resisted the temptation to pop off for a Pimms were well rewarded.
Norrie v Paul
Jonathan Jurejko
BBC Sport at Wimbledon
Buddies off the court but rivals on it today.
That's the scenario for Cameron Norrie and Tommy Paul.
The pair have been practising together at the All England Club, but they will be facing each other across the net for real.
"We've actually practised maybe two or three times already here. We know each other's game very well," says the British men's number one.
"We're good friends off the court. But we're going to both leave that aside and it's going to be a battle, for sure."