Emma Raducanu has pulled out of next month's Billie Jean King Cup, citing a wrist injury.

The former US Open champion had been named as part of Great Britain's team for the tournament, which will take place at Emirates Arena in Glasgow between November 8-13.

Raducanu was selected alongside Harriet Dart, Katie Boulter and Heather Watson, with a fifth member to be added at a later date, and made her Billie Jean King Cup debut in April's qualifier against Czech Republic.

However, after pulling out of the Transylvania Open earlier this month with the same right-wrist issue, the 19-year-old confirmed on Friday she had been told by doctors she will not recover in time.

"It's disappointing to get the news from the doctors that I won't be ready in time, particularly with it being on home soil," Raducanu said.

"I tried to do everything possible to get it ready in time. 

"Since my last tournament I've been working every day on physical training and rehab. I've got confidence in my team-mates and look forward to playing next year."

Great Britain will be one of 12 teams participating in Scotland, and have been drawn in a group with Kazakhstan and Spain.

Elina Svitolina is taking a much-needed break from tennis due to physical and mental stress brought on by injuries and Russia's invasion of her native Ukraine. 

The world number 20 revealed she had been struggling with a back injury that affected her preparations for tournaments, falling at the first hurdle in each of her past two events.

Svitolina, the 2018 WTA Finals champion, reached the last eight at the Monterrey Open, where she refused to play Anastasia Potapova unless the Russian was classed as a neutral athlete at the start of the month, but she lost in her first match at both Indian Wells and the Miami Open.

Svitolina's sabbatical means she will be absent from Ukraine's Fed Cup clash with the United States next month, and it remains to be seen if she will return in time for the French Open at the end of May.

The 27-year-old posted on Twitter: "It's been an extremely difficult couple of months for me not only mentally, but physically. 

"For quite a long time, I've been struggling with my back; the pain didn't let me prepare for the tournaments at my best.

"Meanwhile, observing with unbearable pain in my heart what is happening in my homeland of Ukraine and with how much bravery and courage our Ukrainian people are defending our country, this gave me a huge push to continue and fight on court.

"Now, my body can't handle it anymore and I need to rest, therefore I'm sad to announce that I will be missing the Fed Cup and a few of my favourite tournaments in Europe. But, I'm sure I will see you around soon, thank you for all your support in this challenging period."

Simona Halep has withdrawn from the Miami Open after aggravating a thigh injury.

Former world number one Halep was due to face Australia's Daria Saville in the round of 64 on Thursday but felt unable to contest the match.

Halep said she sustained a thigh injury during her Indian Wells semi-final defeat to Iga Swiatek the previous week and it caused her discomfort again while training on Wednesday.

The 30-year-old two-time major winner expects to sit out the Charleston Open and will miss the start of the Billie Jean King Cup.

In a tweet posted on her official Twitter account, Halep wrote: "While I was practising in Miami yesterday I felt a sharp pain in my left leg.

"I had been struggling with the thigh since my semi-final in Indian Wells and hoped it would improve, but I went for an MRI last night and unfortunately it showed a tear.

"My body needs time to heal and as a result I will be out of competition for three weeks. This means I have had to make the super tough decision to pull out of Miami, Charleston and Fed Cup [Billie Jean King Cup].

"While it feels like really disappointing news to share, I am keeping the confidence from my great start to the year and am motivated to do everything to be ready for the clay-court season.

"Thanks for your continued support through the highs and lows."

Lucky loser Harmony Tan will take Halep's place in the draw.

Russia have been replaced by Serbia in the Davis Cup and Australia in the Billie Jean King Cup, the International Tennis Federation (ITF) has confirmed.

Russia, who won both competitions in 2021, have been suspended from competing in international team events following the country's invasion of Ukraine.

As the highest-ranked losing semi-finalist from last year, Serbia will take Russia's place in the Davis Cup Finals.

The wild card previously handed to Serbia will now go to one of the 12 nations knocked out in the qualifiers that took place earlier this month.

Likewise, as the highest-ranked side among the 2021 losing Billie Jean King Cup semi-finalists, Australia will replace Russia in that competition.

Australia were due to take part in April's qualifiers, but opponents Slovakia will now receive a bye and advance directly to the Finals.

Belarus have also been barred from competing in both events, meaning Belgium will receive a walkover in their qualifying match and advance to the Billie Jean King Cup Finals.

Late stand-in Liudmila Samsonova produced a mesmerising fightback to beat Olympic champion Belinda Bencic and clinch the Billie Jean King Cup for the Russian Tennis Federation.

After Daria Kasatkina swept to a 6-2 6-4 win over Jil Teichmann to put the Russians ahead against Switzerland, Samsonova produced a high-quality performance to win 3-6 6-3 6-4 against Bencic.

It meant there was no need for a doubles decider, with the Russian squad taking the match 2-0.

Samsonova had not expected to be involved in the singles contest in Prague, but a knee problem forced Anastasia Pavlyuchenkova to pull out just minutes before Saturday's final got under way, forcing Russian captain Igor Andreev into a reshuffle.

A worthy substitute, Samsonova is ranked 40th in the world, while Bencic sits at number 17, and this win was the Russian's third victory in three meetings this year with the Tokyo 2020 gold medallist.

One of those came in the final of the Berlin grass-court tournament, and the 22-year-old was not over-awed by another big occasion this time.

Just as she did in Berlin, Samsonova lost the opening set but then dominated, and by doing so she secured a fifth Russian triumph in this team competition, previously known as the Fed Cup.

Samsonova said: "I have too many emotions now. It's unbelievable. I'm unbelievably happy. It was an incredible fight. It was a more nervous game. It was more than tennis."

Andreev spoke of the strong bond in his squad, saying: "It's an historical win for us. It's been a long time without any trophies in team tennis. I'm very proud and very happy for the girls, the way they played.

"They're amazing, they're heroes, and they achieved this because they're a team – a real team – and real friends."

Russia dominated this event from 2004 to 2008, winning four of five titles, while Switzerland had only previously been to one final, when Martina Hingis and Patty Schynder were outmatched by Arantxa Sanchez Vicario and Conchita Martinez in the 1998 showpiece.

Veronika Kudermetova and Liudmila Samsonova propelled a Russian tennis squad into their first Billie Jean King Cup final since 2015 as they sealed a 2-1 victory over the United States.

The Russians will meet Switzerland in the trophy showdown on Saturday, after Olympic champion Belinda Bencic defeated Ajla Tomljanovic to secure an unassailable 2-0 lead for the Swiss over Australia.

While Switzerland did not need a doubles decider, the Russian team, who are competing this week as Russian Tennis Federation, did.

Samsonova, who clinched her maiden singles title on the WTA Tour earlier this year, put them ahead in their tie against the USA, downing 2017 US Open champion Sloane Stephens 1-6 6-4 6-3.

Yet the USA hit back through Danielle Collins, who defeated Anastasia Pavlyuchenkova 6-7 (9-11) 7-6 (7-2) 6-2 – a contest that lasted two hours and 42 minutes in Prague.

Momentum was with the 18-time champions, but the Russians recovered in the doubles, with Samsonova and Kudermetova ultimately having little trouble in seeing off Shelby Rogers and Coco Vandeweghe 6-3 6-3.

Bencic saw off Tomljanovic to confirm Switzerland's place in the final, with Jil Teichmann having earlier overcome Storm Sanders 6-0 6-3.

Russia dominated this event, previously known as the Fed Cup, in the mid to late 2000s, winning four out of five editions from 2004 to 2008, but they have not triumphed since. Switzerland recorded their best result when a team featuring Martina Hingis finished second to Spain, way back in 1998.

Australia and Switzerland secured their spots in the semi-finals of the Billie Jean King Cup and will go up against each other for a place in the final.

Belarus proved no match for Australia, who got the job done across their two singles matches on the day in the Czech Republic.

Storm Sanders got the ball rolling as she comfortably saw off Yuliya Hatouka 6-3 6-3 in the first contest of the day in Group B.

Ajla Tomljanovic was made to work a little harder by Aliaksandra Sasnovich as she lost the first set but eventually rallied to overcome her opponent 4-6 6-2 6-3.

It meant the two countries' doubles meeting was a dead rubber – Belarus at least took the opportunity to avoid a 3-0 annihilation as Sasnovich teamed up with Lidziya Marozava in the 6-4 6-4 defeat of Olivia Gadecki and Ellen Perez.

In Group D, Switzerland and the Czech Republic claimed one victory apiece in the singles – Marketa Vondrousova had too much for Viktorija Golubic in a 6-4 6-2 success that gave the Czechs the upper hand.

But Belinda Bencic levelled things up despite the unenviable task of facing world number three Barbora Krejcikova, emerging with a 7-6 (7-2) 6-4 success.

Bencic was then involved in the doubles decider as well, getting the better of Lucie Hradecka and Katerina Siniakova with Jil Belen Teichmann, their 6-3 6-3 win sealing the semis spot for the Swiss.

The Russian Tennis Federation – who eliminated defending champions France on Wednesday – and the United States are due to contest the other semi-final.

France's Billie Jean King Cup defence ended at the hands of the Russian Tennis Federation, who will meet the United States in the semi-finals after Wednesday's play in Prague. 

Clara Burel put France on course for the 3-0 victory they needed to advance from Group A with a three-set victory over Ekaterina Alexandrova, but Anastasia Pavlyuchenkova outlasted Alize Cornet in the second rubber to ensure a new champion will be crowned. 

Pavlyuchenkova saved six of 10 break points and racked up an impressive 34 winners en route to a crucial 5-7 6-4 6-2 success against Cornet. 

"I'm so, so happy and so proud of myself because I think it was an incredible match. It was very good tennis but more importantly I think it was an amazing fighting spirit from both of us," said Pavlyuchenkova. 

"We were like two tigers. Nobody wanted to give the other anything and I think that's what matters. That's the sport we're playing." 

Veronika Kudermetova and Liudmila Samsonova comfortably defeated Cornet and Burel in the doubles to consign the reigning champions to a 2-1 defeat. 

The RTF will go up against the USA in the first semi-final, with the Americans comfortably seeing off Spain in the singles rubbers. 

Sloane Stephens bested Nuria Parrizas-Diaz 6-4 6-4 before Danielle Collins swept Sara Sorribes Tormo aside 6-1 6-0 in under an hour. 

Collins won 83 per cent of points behind her first serve and forced Sorribes Tormo into 24 errors during a resounding victory. 

Spain avoided a 3-0 defeat, though, with Aliona Bolsova and Rebeka Masarova beating Caroline Dolehide and CoCo Vandeweghe 6-3 6-4 in the doubles rubber. 

Belinda Bencic fought back to beat Angelique Kerber in a blockbuster showdown and help Switzerland eliminate Germany on day two of the Billie Jean King Cup in Prague.

Germany lost to hosts Czech Republic on the opening day and were brushed aside 3-0 by Switzerland on Tuesday, with world number nine Kerber losing 5-7 6-2 6-2 to Bencic.

Kerber was carrying an injury and was outlasted by the Olympic gold medallist, with that triumph coming after Viktorija Golubic defeated Andrea Petkovic 6-4 7-5.

Golubic and Jil Teichmann added further gloss to the scoreline by overcoming Anna-Lena Friedsam and Nastasja Mariana Schunk in the doubles.

Switzerland will now meet the Czech Republic in a winners-takes-all contest to determine who finishes top of Group D.

The upset of the day came in Group B as Australia beat Belgium 2-1, with Daria Gavrilova kicking things off by beating Greet Minnen 6-4 1-6 6-4.

Storm Sanders then battled back to beat Elise Mertens 4-6 7-6 (7-5) 6-0, rendering Mertens and Minnen's doubles win nothing more than a consolation. 

In Group A, Russia cruised to a 3-0 win over Canada.

Daria Kasatkina beat Carol Zhao 6-3 6-1 and Anastasia Pavlyuchenkova was too strong for Rebecca Marino as she prevailed in three sets.

Slovakia top Group C, meanwhile, after beating the United States 2-1. Shelby Rogers fell 6-4 6-4 to Viktoria Kuzmova before Danielle Collins levelled with a 6-3 6-2 win against Anna Karolina Schmiedlova.

That set up a decider in the doubles, which went the distance as the Slovakian pair of Kuzmova and Tereza Mihalikova prevailed 6-2 6-7 (5-7) 12-10 in a thriller with Caroline Dolehide and CoCo Vandeweghe.

Canada sensationally upset top-ranked France on day one of the inaugural Billie Jean King Cup, winning a decider in the doubles to secure victory at the O2 Arena in Prague on Monday.

The tournament, formerly known as the Fed Cup, kicked off in exciting fashion with three of the four ties going to a final rubber match.

The most notable result of the day came in Group A as the lowest-ranked team Canada beat the reigning champions France 2-1. A singles win for world number 353 Francoise Abanda against Fiona Ferro was followed by the pairing of Gabriela Dabrowski and Rebecca Marino defeating Clara Burel and Alize Cornet to clinch it.

Elsewhere, Group D began with hosts Czech Republic beating Germany 2-1, despite world number three Barbora Krejcikova losing to world number nine Angelique Kerber in the second match.

The Czechs have won six of the last nine Fed Cups, and will be hoping to reclaim the crown in their home tournament.

History was made by Belgium's Greet Minnen in Group B as she became the first person to win a match in the competition’s new format, beating Iryna Shymanovich of Belarus 6-2 6-2. Elise Mertens sealed the win for the Belgians immediately after, though Belarus won the dead rubber doubles contest.

In Group C, Spain were able to overcome Slovakia in their deciding doubles match as Sara Sorribes Tormo and Carla Suarez Navarro beat Viktoria Kuzmova and Tereza Mihalikova.

Day two sees Canada take on the Russian Tennis Federation, while Australia start their tournament against Belgium, Slovakia face USA, and Germany will look to get back on track against Switzerland.