Tie-breakpublished at 16:39 British Summer Time 10 June
Dart 6-6 (3-0) Boulter*
Harriet Dart gets a mini-break, taking the first three points after some wild Katie Boulter errors.
Dominic Stricker v Dan Evans 3-6, 6-4 play suspended
Katie Boulter beats Harriet Dart 6-7 (5-7) 6-4 7-5
Heather Watson defeats Kayla Day 4-6 6-0 6-4
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Joe Rindl
Dart 6-6 (3-0) Boulter*
Harriet Dart gets a mini-break, taking the first three points after some wild Katie Boulter errors.
Dart 6-6 (0-0) Boulter*
A double fault means Boulter breaks to love and we head to a tie-break.
Four breaks in a row. Serving is becoming impossible.
*Dart 6-5 Boulter
Nobody is serving well right now. The windy conditions really aren't helping anyone. Dart slips to 0-30.
And then it gets worse for the British number two as an umpire correction says a Boulter shot is in, not out. 0-40.
*Dart 6-5 Boulter
Harriet Dart will have another opportunity to serve for the first set. She breaks to 15 after the wind catches a Katie Boulter forehand, dropping it long and wide.
Dart 5-5 Boulter*
Serving is a big challenge in these windy conditions. Boulter errors, setting up two break points.
Dart 5-5 Boulter*
Katie Boulter completely underhits a drop shot attempt. 0-30 and very sloppy.
Boulter worked so hard to get back in this set, but she's up against it again now.
Dart 5-5 Boulter*
Katie Boulter is still in the first set! Her powerful return flicks off the frame of Harriet Dart's racquet and into the crowd.
The British number one and number two are treating us to a edgy encounter. There's nothing between these two!
*Dart 5-4 Boulter
Harriet Dart is struggling to close this one out. She hits the net and then goes long. Another twist? 15-40.
*Dart 5-4 Boulter
Dart takes the first point but Boulter levels at 15-15 with a deep forehand which Dart can only return into the net.
*Dart 5-4 Boulter
Katie Bouter saves the first break point but she can't keep out the second, erroring under pressure.
Harriet Dart will serve for the set after the change of ends. Who saw this coming after Boulter went a break ahead just a handful of games ago?
Dart 4-4 Boulter*
Another Harriet Dart forehand winner and suddenly it's 15-40. This to put the Briton to within a game of the first set...
Dart 4-4 Boulter*
Harriet Dart gets that crucial hold. She plays a great forehand winner and then levels up with a strong first serve which Katie Boulter can't return.
One thing I've not yet mentioned is the wind. There were rallies in that game where both players opted not to volley. Neither player looks fully convinced with balls suddenly changing direction mid-flight.
*Dart 3-4 Boulter
Katie Boulter backhands into the net. Deuce.
*Dart 3-4 Boulter
Big point coming up at 30-30 on Dart's serve.
The pair get locked into an intense rally and it's British number one Boulter who comes out on top with a crosscourt forehand winner that clips the net on the way over.
*Dart 3-4 Boulter
And Dart does punch back, benefitting from a Boulter error to break to 15. We're on serve again in the opening set.
Dart 2-4 Boulter*
This match is properly seesawing now!
Harriet Dart sets up two break-back points of her own with a forehand winner on the run, into the corner, which even has Katie Boulter applauding.
Dart 2-4 Boulter*
Dart saves the first but she can't defend the second as the reigning champion hits a passing winner to lead by a break.
*Dart 2-3 Boulter
Harriet Dart is having a bit of a wobble. She hits a forehand long and her shoulders suddenly drop a bit.
After such a positive start the British number two is now up against it in the opening set. 0-40.
*Dart 2-3 Boulter
Dart isn't happy. I think she wasn't ready for a Boulter serve at 30-15.
Boulter aced it and then takes the next point to hold. It means she leads for the first time in this match.
Dart 2-2 Boulter*
Harriet Dart smashes a backhand into the net and we're level again!
Katie Boulter breaks back.