'German team clinging on to hope'published at 19:22 Greenwich Mean Time
*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.
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LIVE: Emma Raducanu 6-4 Jule Niemeier
Followed by: Katie Boulter v Laura Siegemund
Olivia Nicholls and Heather Watson will team up if deciding doubles is needed
Winners will face defending champions Canada in quarter-finals
Emily Salley & Marissa Thomas
*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.
*Niemeier 4-6 2-2 Raducanu
Another one! That net cord is working wonders for Emma Raducanu and it brings up two break points for the 2021 US Open winner.
*Niemeier 4-6 2-2 Raducanu
Lucie Ahl
Former British number one
We're seeing more and more variety from Jule Niemeier and she has got the skills to do it.
Excellent play.
Full credit to her, she has been feeling the pressure out there but she is trying to relax and enjoy it.
*Niemeier 4-6 2-2 Raducanu
We're back level! A clenched fist and a big smile from Jule Niemeier as Emma Raducanu pushes the ball into the net.
There's been a huge momentum shift here.