Postpublished at 19:26 Greenwich Mean Time
*Niemeier 4-6 3-5 Raducanu
Jule Niemeier saves the first with a huge overhead winner.
And there goes the second one as Emma Raducanu finds the net.
Deuce.
Great Britain beat Germany 2-0 to reach last eight at Billie Jean King Cup Finals
Katie Boulter seals victory with dominant 6-1 6-2 win over Laura Siegemund
Emma Raducanu gave GB lead by beating Jule Niemeier 6-4 6-4
GB will face defending champions Canada in quarter-finals on Sunday
Emily Salley, Marissa Thomas & Emma Smith
*Niemeier 4-6 3-5 Raducanu
Jule Niemeier saves the first with a huge overhead winner.
And there goes the second one as Emma Raducanu finds the net.
Deuce.
*Niemeier 4-6 3-5 Raducanu
Surely this is it?! Two match points for Emma Raducanu.
*Niemeier 4-6 3-5 Raducanu
"Let's go Emma, come on," shouts GB captain Anne Keothavong.
Raducanu is still a break up.
*Niemeier 4-6 3-5 Raducanu
Lucie Ahl
Former British number one
The German team are clinging on to a little bit of hope here.
*Niemeier 4-6 3-5 Raducanu
After seeing three net cords go against her, finally one works in Jule Niemeier's favour and what a time for it to happen.
This match isn't over just yet. Niemeier gets a break back.
Niemeier 4-6 2-5 Raducanu*
Another double fault for Emma Raducanu. Advantage and break point, Jule Niemeier.
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Anon: Emma Raducanu gives off that same energy as Andy Murray, you think she's down and then she pulls something out of the bag! Once those big injuries are healed she'll get back to the top, US Open wasn't a fluke. Future Wimbledon champ for sure, and what a moment that will be.
Niemeier 4-6 2-5 Raducanu*
And now it's Jule Niemeier's turn. She flings an aggressive forehand across the court and Emma Raducanu can only get the slightest of touches.
The Briton hits a cross-court winner of her own, though, to bring us back to deuce.
Niemeier 4-6 2-5 Raducanu*
Not the time to double fault, Emma. Deuce.
Niemeier 4-6 2-5 Raducanu*
Emma Raducanu sends the serve out wide and all Jule Niemeier can do is send the ball back into the net.
Match point Raducanu.
Niemeier 4-6 2-5 Raducanu*
Jule Niemeier goes long on the return, but Emma Raducanu replies with a wayward shot on the next point. 30-30.
Niemeier 4-6 2-5 Raducanu*
That's more like it! An ace pulls Emma Raducanu level. 15-15.
Niemeier 4-6 2-5 Raducanu*
Not the best start for Emma Raducanu. A double fault. 0-15.
Niemeier 4-6 2-5 Raducanu*
Lucie Ahl
Former British number one
We said it had a different feeling at 2-2 but Emma Raducanu has been able to bounce back quickly to put herself in this position and put the pressure on Jule Niemeier.
Niemeier 4-6 2-5 Raducanu*
What a return that is from Emma Raducanu, hitting the backhand across the court and out of Jule Niemeier's reach.
It's a long way back for the German.
Raducanu, meanwhile, is one game away from putting GB 1-0 up. Can she serve out the win?
*Niemeier 4-6 2-4 Raducanu
Another break point opportunity for Emma Raducanu as Jule Niemeier hits her eighth double fault of the match.
*Niemeier 4-6 2-4 Raducanu
Katie Boulter is no longer present on the GB bench. The British number one could be in action very shortly if Emma Raducanu keeps up this form.
*Niemeier 4-6 2-4 Raducanu
Lucie Ahl
Former British number one
It's going to be interesting to see what belief Jule Niemeier has left in her.
She has struggled to read which way Emma Raducanu is going to go with the serve.
*Niemeier 4-6 2-4 Raducanu
After failing to hold in her last service game, Emma Raducanu makes no mistake with this one.
She wraps up a love hold as Jule Niemeier scuffs a return into the stands.
Niemeier 4-6 2-3 Raducanu*
Emma Raducanu sends the first break point into the net, but the favour is returned by Jule Niemeier on the next point as Raducanu restores her lead.