Niemeier breakspublished at 13:53 British Summer Time 11 April
Kartal 5-4 Niemeier*
Jule Niemeier is hanging in there and applies the pressure to secure the break.
That's a sixth break of serve in nine games in this match.

Great Britain 2-1 Germany in BJK Cup qualifying
Olivia Nicholls/Harriet Dart lose to Laura Siegemund/Anna-Lena Friedsam in doubles
Katie Boulter comes from set down against Tatjana Maria to give GB unassailable lead
Sonay Kartal earlier beat Jule Niemeier on debut to give GB lead
Great Britain will take on the Netherlands tomorrow in a bid to top Group F and qualify for the Final
Jess Anderson, Millie Sian and Maisie Gallen
Kartal 5-4 Niemeier*
Jule Niemeier is hanging in there and applies the pressure to secure the break.
That's a sixth break of serve in nine games in this match.
*Kartal 5-3 Niemeier
Naomi Cavaday
Former British tennis player on BBC Red Button
Sonay Kartal is really getting the better of Jule Niemeier at the back of the court.
You can see how hard she is having to work to cover a lot of ground.
Maybe could Niemeier maybe go a bit bigger on the return, she does have that extra bit of firepower.
*Kartal 5-3 Niemeier
A long looping forehand from Sonay Kartal hands Jule Niemeier a break-back point.
*Kartal 5-3 Niemeier
Jule Niemeier deploys back-to-back drop shots to get on level terms 30-30 as she tries to prevent Sonay Kartal taking the opener.
*Kartal 5-3 Niemeier
Sonay Kartal is starting to dominate the rallies from the baseline and she edges closer to the first set with a couple of forehands that force mistakes from Jule Niemeier.
*Kartal 5-3 Niemeier
Naomi Cavaday
Former British tennis player on BBC Red Button
No signs of nerves on show whatsoever from Kartal. She is getting on the front foot now and is ready to get to those drop shots and slice them cross-court.
Niemeier will be frustrated with those last couple of points, her coach will try to keep her positive.
*Kartal 5-3 Niemeier
Jule Niemeier shakes her head as she once again goes down a break.
Sonay Kartal will serve for the first set.
Kartal 4-3 Niemeier*
Jule Niemeier has indeed used the drop shot to her advantage so far but Sonay Kartal is starting to anticipate it and she does just that for 15-30 on the German's serve.
Niemeier fumes as she misses the overhead smash, sending it into the net to hand Kartal a break point.
Kartal 4-3 Neimeier*
Naomi Cavaday
Former British tennis player on BBC Red Button
We are already into double figures of the number of drop shots Kartal has had to chase down. They are coming quick and fast.
There is plenty of grip and rip on the ball from Niemeier, she was determined to get that break back. Some tougher and longer points have gone her way but that first set is still up for grabs.
Kartal 4-3 Niemeier*
Ah, Jule Niemeier immediately breaks back after Sonay Kartal sends her two-handed backhand wide of the line.
Will she hold her serve to get back on level terms?
*Kartal 4-2 Niemeier
Nice shot from Jule Niemeier, whipping round the ball to send it down the line and that brings up a break-back point for the German.
*Kartal 4-2 Niemeier
Naomi Cavaday
Former British tennis player on BBC Red Button
Sonay Kartal is getting used to the pace from Jule Niemeier.
She is just soaking it up and looking more and more comfortable out there.
*Kartal 4-2 Niemeier
That's four in a row for Sonay Kartal!
She takes a very impressive break to love to nudge further ahead in this opening set.
Kartal 3-2 Niemeier*
Some big looping forehands from the back of the court in a long rally that ends with Jule Niemeier hitting wide and handing Sonay Kartal three break points.
Kartal 3-2 Niemeier*
Naomi Cavaday
Former British tennis player on BBC Red Button
This is good progress for Sonay Kartal.
If you wanted to know how long it was going to take her to settle into her first-ever Billie Jean King Cup match, the answer is two games.
She has just rattled through three in a row here...
Kartal 3-2 Niemeier*
Russell Fuller
Tennis correspondent in the Netherlands
Jule Niemier’s confidence must be fragile after a heavy defeat yesterday, and a poor run in recent months, but she has started much more confidently today.
The crowd is sparse, but having seen too many ties on neutral ground, I can tell you this is one of the better ones. And the drums, tambourines and maracas sure make a difference.
Kartal 3-2 Niemeier*
Sonay Kartal seems to have found her stride here and she takes the hold with some powerful strokes from the baseline.
Jule Niemeier edges back into the game with a brilliant passing return shot followed by a deft drop shot but she sends her return wide to concede the game and Kartal is ahead for the first time in the match.
*Kartal 2-2 Niemeier
Naomi Cavaday
Former British tennis player on BBC Red Button
It took her a couple of games to get into it but Kartal is now matching Neimeier stride for stride.
*Kartal 2-2 Niemeier
Jule Niemeier saves the first break point but Sonay Kartal takes her chance at the second opportunity and we're back on serve in the Netherlands.
Kartal 1-2 Niemeier*
Sonay Kartal has sized up her opponent and is now finding her groove in this match.
She brings up a couple of break points.