Day eight - women's quarter-finals and doubles action
Serena Williams beats Camila Giorgi to reach semi-finals
Williams beats Italian 3-6 6-3 6-4 and will face Julia Gorges
13th seed Gorges fights back to see off Bertens 3-6 7-5 6-1
11th seed Kerber defeats Kasatkina 6-3 7-5 and will play Ostapenko
12th seed Ostapenko overcomes Cibulkova 7-5 6-4
Del Potro beats Simon in four sets to reach men's last eight
GB's Dominic Inglot and Franko Skugor reach men's doubles semi-final
*Williams 3-6 6-3 0-1 Giorgi
Camila Giorgi bounces around at the back of the court again to try and get herself going again. I mentioned she needed to find her first serve and the 26-year-old does so. One ace up near 120mph and another serve that Serena can only frame into the stands.
Confident start to the set from the Italian. She's still in it.
Bertens 6-3 5-5 *Gorges
Another deuce. Another hold for Kiki Bertens. Whoever wins this quarter-final, will certainly have deserved their place in the semis.
Williams 3-6 6-3 0-0 Giorgi*
Once again there wasn't much in that set. Camila Giorgi will need to find her first serve a few more times than the 43% there though.
Williams 3-6 6-3 0-0 Giorgi*
No problems for Serena Williams.
A huge scream of "come on".
We're going the distance.
Wimbledon 2018: Serena Williams wins the second set against Camila Giorgi
Bertens 6-3 4-4 Gorges
Jonathan Jurejko
BBC Sport at Wimbledon
All this match is missing is a rope across the net. Every game has been a tug o' war between Bertens and Gorges.
Only two of the 17 games have ended in holds to love, none held to 15, and eight going to deuce.
Tomorrow looks good...
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*Williams 3-6 5-3 Giorgi
Serena Williams can't quite believe Camila Giorgi found the line with another backhand. She shakes her head in disbelief.
Giorgi holds to force Serena to serve it out.
Williams 3-6 5-2 Giorgi*
A comfortable hold for Serena. She's a game away from leveling this match.
Bertens* 6-3 3-4 Gorges
Kiki Bertens has the break she needs. If she can hold her next service game, it will be level again in the second set.
New balls are on their way too.
Image source, Getty Images*Williams 3-6 4-2 Giorgi
Chanda Rubin
American former world number six at Wimbledon
This was an important game for Giorgi. To make a stand, stop the run of games and keep herself within striking distance in this set.
*Williams 3-6 4-2 Giorgi
Camila Giorgi isn't showing any signs that she'll be affected physically by this match. The hair is still perfectly in place behind the white headband and there's no sign of fatigue in the face.
Serena hits some more powerful returns but the Italian comes through.
While men and women continue to play separately at Wimbledon the UK’s Local Tennis Leagues are thriving on mixed games.
The league, set up thirteen years ago by Sally Kinnes, began with 12 players and today it has 8,000.
Men and women compete by ability not just by gender with some women preferring to play with the opposite sex.
BBC Radio 4 went along to find out what it was all about. Listen to the podcast here.
Williams 3-6 4-1 Giorgi*
Serena berates herself after missing a backhand. "Come on, come on," she says. Giorgi is still pushing but Serena is on top right now. Her ground strokes have a little more zip. They're pushing Giorgi back.
*Williams 3-6 3-1 Giorgi
You can't fault Camila Giorgi there. Brutal hitting from Serena. She does everything right and breaks for the first time.
Williams grabs the advantage in this second set.
Serena Williams breaks in second set
Williams 3-6 2-1 Giorgi*
Perfection on the returns from Serena, right at the toes of Camila Giorgi. Here are two break points for the American.
Bertens 6-3 1-3 Gorges*
Kiki Bertens played a thumping backhand down the line and a slick cross-court forehand but still couldn't hold off three break points against Julia Gorges.
The 13th seed takes a crucial lead in the second set.
Wimbledon 2018: Julia Gorges breaks in the second set against Kiki Bertens
Williams 3-6 2-1 Giorgi*
"The decibel level is starting to rise," says Sam Smith on comms and she's right. Serena is getting louder and louder as the situation gets graver.
"Come on," the American shouts as she holds from 0-30 down.
*Williams 3-6 1-1 Giorgi
That's a chance. Serena can only chip one back mid-court and Giorgi steps into a backhand but goes long.
30-30.
*Williams 3-6 1-1 Giorgi
A shocked silence falls over Centre Court. Serena makes an uncharacteristic error.
0-30.
Trouble.
*Williams 3-6 1-1 Giorgi
Serena sways at the back of the court, waiting to pounce on the Giorgi serves but they're still too strong. This one is a huge effort out wide that is followed by with a smash from deep in the court by the Italian.
Williams responds with a return winner but then Giorgi slams an ace to level. A few on Centre are starting to believe.