Kostyuk 4-6 7-6 (7-2) 6-4 Saville
Image source, Getty ImagesUkrainian 18th seed Marta Kostyuk comes back from a set behind to progress past Australian Daria Saville, who fought until the last ball, denying Kostyuk several match points before she eventually served it out on court 14.
Wang 6-4 2-2 Pegula*
Charlotte Coates
BBC Sport at Wimbledon
Jessica Pegula’s body language isn’t looking great at the moment.
“Give yourself small goals” says her team as she double faults.
The fifth seed is in danger of being knocked out here.
Fearnley 3-6 2-1 Djokovic*
The Brits are alright.
Jacob Fearnley is coming to the net more, and serves-and-volleys his way to a hold to 15.
Boulter 6-4 0-4 Dart*
Laura Robson
Former British number one on BBC Radio 5 Live and BBC Sounds
Harriet Dart is now looking so much more positive than she was.
Of course, the scoreline helps that but maybe she took a wider look at how she was playing in that first set.
Boulter 6-4 0-4 Dart*
Excellent from Harriet Dart as she produces a winner to grab the double break and a 4-0 lead after a rapid-fire 17 minutes of set two.
This has been a superb response to losing the opening set and it's looks like we're heading for a deciding set on Court One.
#bbctennis on X, via WhatsApp on 03301 231826 or text 81111 (UK only, standard message rates apply)
I know it's a home tournament for the Brits but it's great to see so many of them actually competing with the best in the world. Such a shame Boulter and Dart and Draper and Norrie will be knocking each other out of the tournament already and haven't got the opportunity to meet later on.
Tim
Listen on BBC Sounds
BBC Sounds
In honour of Andy Murray’s final Wimbledon and impending retirement, a BBC Sounds mini-series has been released and it is called Sporting Giants: Andy Murray.
Introduced by BBC tennis correspondent Russell Fuller, the three episodes are re-versioned BBC 5 Live Sport documentaries celebrating the best years of Murray’s career: 2012, 2013 and 2016.
Relive Murray's incredible career with these three special documentaries.
Listen here.
*Boulter 6-4 0-3 Dart
And things could get even better for Harriet Dart as she has three break points for a double break and a 4-0 lead in the second set.
*Fearnley 3-6 1-1 Djokovic
Anything you can do....
Novak Djokovic responds with a love-hold of his own.
Right now Djokovic and Jacob Fearnley are matching each other nicely. To give you an idea, here's an epic rally between the two from the first set.
Fearnley finishes off 21-shot rally
*Boulter 6-4 0-3 Dart
Laura Robson
Former British number one on BBC Radio 5 Live and BBC Sounds
I almost thought at the end of the first set that Katie Boulter might run away with the second set but she is clearly still feeling some tension, understandably so.
It's slightly odd actually, to see her mis-time so many shots one after the other.
Harriet Dart has reset after the first set, it looks like she has relaxed a little bit. She is just trying to manoeuvre Boulter around the court.
A real reset is needed for Boulter, whether she can get this back in the second set, we will see.
*Boulter 6-4 0-3 Dart*
Alan Jewell
BBC Sport at Wimbledon
The loudest roars of the match so far greet that hold from Harriet Dart to back up her break. The previously non-committal Court One crowd want to see a contest.
*Boulter 6-4 0-3 Dart
Laura Robson
Former British number one on BBC Radio 5 Live and BBC Sounds
Image source, PA MediaHarriet Dart has come out so aggressively in the second set, Katie Boulter totally mistimed her first serve.
There were a few errors from Boulter in that last game, just planting her feet a bit too soon at times.
*Boulter 6-4 0-3 Dart
An excellent spirit shown by Harriet Dart as she not only gets the break of serve in the second game, but then backs that up by holding her serve in the next game to sprint into a 3-0 lead in set two.
Fearnley 3-6 1-0 Djokovic*
Really good start to the second set from Jacob Fearnley. So often Novak Djokovic opponents crumble after losing the first set.
Not the Scot though, who holds to love.
*Fearnley 3-6 0-0 Djokovic
Image source, Getty Images
Image source, PA MediaTV adventurer Bear Grylls and Australian cricketer Pat Cummins are among the guests in the Royal Box on Centre Court today...
*Fearnley 3-6 0-0 Djokovic
John Lloyd
Former GB Davis Cup captain on BBC TV
Image source, Getty ImagesWith the pressure Novak Djokovic puts on you with the returns of serve and the depths of his groundstrokes, you've got to do something special to win points and you have to really earn it.
Not many freebies given from the great one that's for sure.
*Fearnley 3-6 0-0 Djokovic
Djokovic takes first set against Fearnley
Novak Djokovic cruises to the first set after going up a gear at the business end - as he so often does.
Jacob Fearnley made a good account of himself early on, but the Serb is just on another level. Djokovic won all 16 of his points on first serve.
Jonathan Jurejko
BBC Sport at Wimbledon
Amazed gasps greeted that delicious backhand winner down the line from Fearnley at the start of the game.
Disappointed groans met the sliced backhand which handed the break over.
The wind has been taken out of the sails of both Fearnley and the British fans.
Fearnley 3-5 Djokovic*
Novak Djokovic goes up 40-0. Three set points.
Fearnley 3-5 Djokovic*
Novak Djokovic is gifted a break at the first time of asking after his brilliant return sets up a forehand error from Jacob Fearnley.
The second seed will serve for the opening set.