US Open champion Emma Raducanu will miss this week's Mubadala World Tennis Championship after testing positive for coronavirus.

The 19-year-old had been due to take on Tokyo Olympics gold medallist Belinda Bencic in the exhibition event in Abu Dhabi.

However, Raducanu announced on Monday that she will not be able to take part in the tournament as she is now self-isolating. 

"I was very much looking forward to playing in front of the fans here in Abu Dhabi, but unfortunately after testing positive for Covid-19, I will have to postpone until the next opportunity," Raducanu said.

"I'm isolating as per rules and hopefully will be able to get back on court soon."

Raducanu became the first qualifier to win a grand slam title with victory at Flushing Meadows in September, but she has won just two of her five matches since then.

The British teenager, who recently appointed Torben Beltz as her new coach after parting company with Andrew Richardson, will next be in action at the Melbourne Summer Set early in the new year as preparation for the Australian Open.

World number one Ash Barty will start her 2022 season at the Adelaide International along with eight of the other current 10 top players in the world.

Barty has held top spot in the women's rankings since September 2019 and collected five titles – including Wimbledon – in the 2021 season but missed the French Open with a hip injury.

She also opted to not play in the season-ending WTA Finals in Mexico due to coronavirus-enforced quarantine concerns that could disrupt her preparation for the following campaign.

The Women's Tennis Association (WTA) confirmed on Friday that Barty would begin her 2022 season in Adelaide on January 2, along with defending champion Iga Swiatek, WTA Finals victor Garbine Muguruza and Roland Garros winner Barbora Krejcikova, as the world's elite players prepare for the Australian Open.

The entry list for the WTA 500 tournaments also includes Tokyo Olympics gold medallist Barbara Bencic, who finished runner-up to Swiatek in 2021, former world number one Karolina Pliskova and US Open runner-up Leylah Fernandez.

The field boasts 12 major trophies between them, but three grand slam winners will kick-start their seasons in Melbourne the day after.

Naomi Osaka, who is aiming to defend her title at the Australian Open, gets her preparations underway in the Melbourne Summer Set.

Two-time major winner Simona Halep and reigning US Open champion Emma Raducanu will play in the Melbourne Summer Set.

The trio are among 20 of the top 50 ranked players in the world for the two WTA 250 tournaments starting on January 3, with the entry list split between the competitions the week before matches start.

Raducanu will feature in just her eighth Tour-level event, and her fourth tournament since winning her first major, while Osaka will be appearing for the first time since an early defeat in the third round of the US Open to Fernandez.

Amelie Mauresmo has become the first woman to be appointed tournament director at the French Open, promising to show "fierce ambition" in the role.

Former Wimbledon and Australian Open champion Mauresmo succeeds fellow former tour professional Guy Forget in the top job at Roland Garros.

Mauresmo enjoyed 39 weeks at number one in the world at the height of her career but struggled to stamp a mark at her home grand slam. She captured the junior title in 1996 but appearances in the 2003 and 2004 quarter-finals were her best performances as a professional.

The 42-year-old aspires to make a greater impact on the Paris tournament during her time in charge, having been appointed to serve until 2024.

She steps into the role after spending several years working successfully as a coach, having helped players including Marion Bartoli, Andy Murray and Lucas Pouille. She and Pouille parted company in October of last year.

Mauresmo said she was "very proud" and explained: "This tournament created a vocation within me. I started dreaming about tennis thanks to Roland Garros! At age four, I sat in front of the television and decided I wanted to become a tennis player, thanks to 'Roland'.

"I stayed here in the National Training Centre when I was younger, I played in the grounds. It was my playground! This site is still very dear to me, even though the stadium has changed a lot. I qualified at age 15, I won the junior tournament.

"My career here featured many ups and downs, in part due to all those emotions I experienced when I was younger. And, after my career, I saw a different side to the event. I have coached various players, been a television pundit, a spectator and a television viewer, too. I don't know if anyone has seen the tournament from more angles than I have.

"This gives me a certain responsibility and a fierce ambition to push Roland Garros even further. The event is already fantastic, extraordinary. We are going to try and make it even better!"

Mauresmo, who retired from playing in 2009, has also served as France's Fed Cup captain.

Tennis great Billie Jean King sent a message of congratulations, and French sports minister Roxana Maracineanu welcomed the appointment.

Maracineanu said: "I salute the arrival of Amelie Mauresmo at the head of the most beautiful tennis tournament in the world. As well as being an exceptional athlete and an engaging women, she represents the necessity of tolerance and modernity. Bravo."

Serena Williams has withdrawn from the Australian Open as she is not yet ready to make a comeback from injury.

Williams has not played since suffering a torn hamstring at Wimbledon in June.

The 40-year-old stated last month that she was "better" and planned to play in the first grand slam of 2022 at Melbourne Park.

Williams will not go in search of a record-equalling 24th major title next month, though, revealing she is not fit enough to take her place in the draw.

She said in a statement: "Following the advice of my medical team, I have decided to withdraw from this year's Australian Open. While this is never an easy decision to make, I am not where I need to be physically to compete. 

"Melbourne  is one of my favourite cities to visit and I look forward to playing at the AO every year. I will miss seeing the fans but am excited to return and compete at my highest level."

The legendary American's last grand slam triumph came at the Australian Open in 2017.

While Williams will not compete, world number one Ash Barty will participate, as will US Open champion Emma Raducanu and four-time grand slam winner Naomi Osaka.

Novak Djokovic has been included in the official entry list for the 2022 Australian Open, with Tennis Australia adamant that no loopholes are being explored.

The world number one, who has won nine of his 20 grand slam titles in Melbourne, has not yet disclosed his COVID-19 vaccination status, meaning there is doubt over whether he will be able to participate.

Every person competing or attending the grand slam next month will need to have been fully vaccinated against coronavirus.

However, despite the uncertainty, the 34-year-old was named in the official list of players for the tournament draw.

Djokovic had already been named in Serbia's team for the ATP Cup, which is to be held in Sydney, leading to speculation that he could enter Australia by travelling directly to New South Wales, which has different COVID-19 restrictions to the state of Victoria, and may then seek a medical exemption to get around the rules applying to unvaccinated travellers.

James Merlino, Victoria's deputy premier, responded to these reports, which also suggested Djokovic had the backing of Tennis Australia.

"My view on this is really clear and really simple," Merlino said on Wednesday. "Everyone's looking forward to the Australian Open and everyone who will attend – spectators, players, officials, staff – everyone is expected to be fully vaccinated.

"They're the rules. Medical exemptions are just that – it's not a loophole for privileged tennis players. It is a medical exemption in exceptional circumstances if you have an acute medical condition."

Tennis Australia responded to Merlino's comments with a statement of their own.

"Any suggestion that Tennis Australia is seeking 'loopholes' within this process is simply untrue. Adjudicating on medical exemptions is the domain of independent medical experts. We are not in a position to influence this process and nor would we," the statement read.

"Any application for a medical exemption must follow strict government guidelines based on ATAGI (Australian Technical Advisory Group on Immunisation) clinical advice. This is the same process that applies to any person wanting to enter Australia."

While Djokovic's participation is unclear, Serena Williams is a big-name absentee. The 40-year-old, who is one shy of matching Margaret Court's record tally of 23 grand slams, had been expected to play in Melbourne.

Roger Federer had already confirmed his absence, but Rafael Nadal is set to compete for the first time since August.

World number two and US Open champion Daniil Medvedev takes his place in the draw, as does 2020 Australian Open finalist Dominic Thiem.

Australian world number one Ash Barty headlines the women's field, with Naomi Osaka, US Open winner Emma Raducanu and WTA Finals champion Garbine Muguruza also in the draw.

Bianca Andreescu, the 2019 US Open champion, has decided to skip the event to focus on her mental wellbeing.

Ash Barty has won the WTA's Player of the Year award for a second time, while Emma Raducanu's sensational 2021 season was capped with the Newcomer of the Year prize on Tuesday.

Barty collected the tour's top individual year-end award in 2019, having won the French Open and finished that season as the world number one.

And after Sofia Kenin succeeded her in 2020, Barty is back on top this year.

This was the third straight season the Australian superstar claimed the year-end number one ranking, and it saw her land a second major title at Wimbledon. Barty's five WTA titles in 2021 were unsurpassed.

But she has had to share the limelight in recent months with Raducanu, and that was the case again as the 19-year-old Briton was unsurprisingly hailed as the tour's star newcomer.

Raducanu became the first qualifier to win a grand slam when she swept to glory at the US Open, having also impressed in a run to the last 16 at Wimbledon.

The teenager, who has risen from 343rd to 19th in the rankings in the past year, won 10 straight matches without dropping a set from the first qualifying round to the final at Flushing Meadows.

Elsewhere, Roland Garros champion Barbora Krejcikova collected a pair of awards, scooping Most Improved Player and, alongside Olympic, WTA Finals and French Open-winning partner Katerina Siniakova, the Doubles Team of the Year.

Carla Suarez Navarro, who retired in 2020 and was then diagnosed with Hodgkin's Lymphoma, returned to the tour cancer free in 2021 for a farewell season and carried off the Comeback Player of the Year award.

Bianca Andreescu will miss the 2022 Australian Open to focus on her mental health after suffering a "very challenging" couple of years.

Andreescu has struggled with physical and mental concerns since winning the US Open two years ago.

The 21-year-old has felt the strain even more this year, with her grandmother in intensive care after contracting COVID-19, Andreescu also testing positive and spending significant time in isolation.

The former world number four has decided to skip the first grand slam next year as she takes extra time out to "reset, recover and grow", but vowed to return "stronger than ever."

The Canadian tweeted: "As you all know, the past two years have been very challenging for me for a variety of reasons.

"Especially this year in particular, I spent multiple weeks in isolation quarantining which affected me greatly – both mentally and physically. In addition, my grandmother spent several weeks in the ICU due to a covid infection, something that really hit me hard.

"A lot of days, I did not feel like myself, especially while I was training and/or playing matches. I felt like I was carrying the world on my shoulders.

"I could not detach myself from everything that was going on off the court; was feeling the collective sadness and turmoil around it and it took its toll on me.

"I want to give myself extra time to reset, recover and grow from this (as cliche [sic] as that sounds) and continue to inspire by doing charity work, giving back and working on myself because I know by doing this, I will come back stronger than ever.

"I will therefore not start my season in Australia this year, but will take some additional time to reflect, train and be ready for the upcoming 2022 season."

Novak Djokovic has backed the stance of the WTA after it suspended all tournaments in China amid ongoing concerns of the safety and wellbeing of Peng Shuai.

Peng made sexual assault allegations in early November against Zhang Ghaoli, the ex-vice-premier and member of the Chinese Communist Party's Politburo Standing Committee, and has not been seen in public since.

She posted the allegations on Chinese social media site Weibo, though her post has since been removed and her whereabouts have been unclear.

The International Olympic Committee (IOC) has held two video calls with Peng, including one on Thursday, but the WTA chairman Steve Simon said neither the first call nor an email allegedly received from the tennis player alleviated concerns.

The WTA, who run the women's tennis tour, suspended its upcoming tournaments in China on Wednesday amid continuing concerns over Peng's safety and Djokovic agrees with the organisation's stance.

"I support fully the WTA's stance because we don't have enough information about Peng Shuai and her well-being," the men's world number one told reporters at Thursday's Davis Cup news conference.

"I think the position of the WTA is very bold and very courageous."

The IOC said it will hold a "personal meeting" in January with Peng as they released a statement on the same day as the second call to repeat the message of the "quiet diplomacy" route that was being taken with Chinese sport bodies.

The International Olympic Committee says it has spoken to Peng Shuai for a second time and will hold a "personal meeting" in January with the Chinese tennis star amid continuing concerns for her safety.

In a statement issued on Thursday, the Olympic body repeated a previous message that it was taking a "quiet diplomacy" route and speaking to Chinese sport bodies about what it described as "the difficult situation she is in".

Peng made allegations in November of sexual assault against Zhang Gaoli, the ex-vice premier and member of the Chinese Communist Party's Politburo Standing Committee. The two-time doubles grand slam winner posted the allegations on social media site Weibo, though her post has since been removed and her whereabouts since have been unclear.

The WTA, which runs the main women's tennis tour, suspended its upcoming tournaments in China on Wednesday owing to its ongoing worries about Peng's wellbeing.

An email allegedly sent by Peng was received recently by WTA chairman Steve Simon, with the message saying the sexual assault allegations were false and that the tennis star was safely at home. Simon said that email only heightened his worries over Peng's safety.

International Olympic Committee (IOC) president Thomas Bach was pictured in conversation by video link with Peng last month, and now the IOC says there was further contact on Wednesday with the 35-year-old former French Open and Wimbledon doubles winner.

The IOC said: "We share the same concern as many other people and organisations about the well-being and safety of Peng Shuai. This is why, just yesterday, an IOC team held another video call with her. We have offered her wide-ranging support, will stay in regular touch with her, and have already agreed on a personal meeting in January.

"There are different ways to achieve her well-being and safety. We have taken a very human and person-centred approach to her situation. Since she is a three-time Olympian, the IOC is addressing these concerns directly with Chinese sports organisations.

"We are using 'quiet diplomacy' which, given the circumstances and based on the experience of governments and other organisations, is indicated to be the most promising way to proceed effectively in such humanitarian matters.

"The IOC's efforts led to a half-hour videoconference with Peng Shuai on 21 November, during which she explained her situation and appeared to be safe and well, given the difficult situation she is in. This was reconfirmed in yesterday's call. Our human and person-centred approach means that we continue to be concerned about her personal situation and will continue to support her."

Beijing, China's capital, is due to host the Winter Olympics in February. There could be a heightened focus on Peng should the situation not be satisfactorily resolved by then.

There has been no suggestion of the Games being in any doubt due to the global concern over Peng, but the women's tennis tour will not be visiting China for the foreseeable future, barring a change in circumstances.

WTA chairman Simon said on Wednesday: "In good conscience, I don't see how I can ask our athletes to compete there when Peng Shuai is not allowed to communicate freely and has seemingly been pressured to contradict her allegation of sexual assault."

The WTA has suspended its upcoming tournaments in China amid concern over the safety of Peng Shuai after she made allegations of sexual assault against a top Chinese government official.

Peng was not seen in public for several weeks after leveling the accusations against Zhang Gaoli, the ex-vice premier and member of the Chinese Communist Party's Politburo Standing Committee.

She posted the allegations on social media site Weibo in early November, though her post has since been removed and her whereabouts have been unclear.

In mid-November, an email allegedly sent by Peng was received by WTA chairman Steve Simon, who expressed his confusion and disbelief at the message, which claimed the sexual assault allegations were false and that the tennis star was safely at home.

The WTA also welcomed pictures of Peng on a video call with International Olympic Committee president Thomas Bach, but a spokesperson for the women's tennis organisation insisted that did not alleviate the concern.

Simon called for a full investigation into the incident as he said the prior email only heightened his worries over Peng's safety, also threatening to suspend WTA tournament action in China until the matter was resolved.

He has since confirmed the suspension will be imposed on tournaments in China in a statement released on Wednesday.

"When on November 2, 2021, Peng Shuai posted an allegation of sexual assault against a top Chinese government official, the Women's Tennis Association recognised that Peng Shuai's message had to be listened to and taken seriously," Simon's statement read. 

"The players of the WTA, not to mention women around the world, deserve nothing less.

"From that moment forward, Peng Shuai demonstrated the importance of speaking out, particularly when it comes to sexual assault, and especially when powerful people are involved.

"As Peng said in her post, 'Even if it is like an egg hitting a rock, or if I am like a moth drawn to the flame, inviting self-destruction, I will tell the truth about you.' She knew the dangers she would face, yet she went public anyway. I admire her strength and courage."

The statement outlined a number of grievances with the way the Chinese state has handled the matter, before adding: "As a result, and with the full support of the WTA Board of Directors, I am announcing the immediate suspension of all WTA tournaments in China, including Hong Kong.

"In good conscience, I don't see how I can ask our athletes to compete there when Peng Shuai is not allowed to communicate freely and has seemingly been pressured to contradict her allegation of sexual assault."

Former British number one Johanna Konta has announced her retirement from tennis after a continuous battle with a knee injury.

Konta, who is a three-time Grand Slam semi-finalist, has not featured on the WTA Tour since August and decided to step away aged 30.

She became the first British woman in 39 years to reach the Wimbledon semi-finals in 2017, while also making the last four at the Australia Open a year earlier and at the French Open in 2019.

Australia-born Konta, a former world number four, collected four titles on the WTA Tour and represented Great Britain in the Fed Cup.

In a statement posted on social media on Wednesday, Konta said: "Grateful. This is the word that I've probably been used to the most during my career, and is the word that I feel explains it best at the end.

"My playing career has come to an end, and I am so incredibly grateful for the career that it turned out to be.

"All the evidence pointed towards me not 'making' it in this profession. However, my luck materialised in the people that came into my life and impacted my existence in ways that transcended tennis.

"I am so incredibly grateful for these people. You know who you are."

Konta made her last tour-level appearance at the Cincinnati Open on August 18 when she lost in the first round to Karolina Muchova.

The Briton had only one win in her last five majors since reaching the quarter-finals of the US Open in 2019 and dropped to 113th in the rankings but remains thankful for the opportunities she has been granted.

"Through my own resilience and through the guidance of others, I got to live my dreams," she added. "I got to become what I wanted and said as a child.

"How incredibly fortunate I count myself to be. How grateful I am."

China has called for people to stop "deliberately and maliciously hyping up" the Peng Shuai saga.

Two-time grand slam doubles champion was reported to have been missing since making sexual assault allegations against Zhang Gaol, the ex-vice premier and member of the Chinese Communist Party's Politburo Standing Committee, more than three weeks ago.

The Women's Tennis Association (WTA) welcomed pictures that showed Peng on a video call with International Olympic Committee (IOC) president Thomas Bach, but say the images do not alleviate its concerns about her wellbeing.

According to the IOC, Peng said she is "safe and well" in the call on Sunday and the 35-year-old spoke to president Bach for half an hour.

Despite footage released by Chinese state-run media on Saturday purporting to show Peng in a restaurant with friends, followed by images of her at a youth tournament on Sunday, concerns have continued to be raised regarding her safety.

Serena Williams, Naomi Osaka and Novak Djokovic are among many fellow players to have issued a plea for answers over Peng's whereabouts.

Human rights group Amnesty International stated the IOC is "entering dangerous waters" by taking part in a call with Peng and "should be extremely careful not to participate in any whitewash of possible human rights violations."

There was a firm message from China's foreign ministry on Tuesday, declared the issue is "not a diplomatic matter".

"I believe you have all seen that she recently attended some public events and had a video call [with IOC president Bach]," spokesman Zhao Lijian told reporters.

"I think some people should stop deliberately and maliciously hyping [the issue] up, let alone politicise this issue."

Ash Barty has announced her engagement to Liverpool fan and golfer Garry Kissick, capping a memorable year in style.

Barty added another sparkler to her collection when she revealed an engagement ring on Tuesday, having already landed the glistening Wimbledon trophy and an Olympic medal in the 2021 season.

She posted a picture of herself and Kissick on Instagram, showing off her ring and captioning the shot "Future Husband".

Kissick is a trainee professional at Brookwater Golf Club, a venue close to Brisbane, and is often seen in a Liverpool Football Club shirt, as was the case with the engagement picture.

He and Barty have visited Liverpool's home ground of Anfield together.

Speaking about having the likes of Kissick and coach Craig Tyzzer with her on the road, Barty said during her run to the Wimbledon title in July: "It's nice to be able to share some of these awesome moments with those that put so much time and energy into my career and allow me, encourage me, help me kind of work and figure out a plan and a way that they try and achieve our dreams. I think being able to share that with them is really special."

Barty won a bronze in mixed doubles at Tokyo 2020 alongside long-time friend John Peers, describing that achievement as "a dream come true".

She also won the Yarra Valley Classic, the Stuttgart Open, and WTA 1000 titles at Miami and Cincinnati before calling time on her season after a third-round exit from the US Open, where she lost to Shelby Rogers.

Barty finished the season as world number one for a third successive year, despite her recent inactivity.

She said a major triumph in her homeland was a priority for 2022, saying: "My focus is now on the Australian summer and doing everything I can to win the Australian Open. I can't wait to play at home again."

The Women's Tennis Association (WTA) has welcomed pictures that show Chinese tennis player Peng Shuai on a video call with International Olympic Committee (IOC) president Thomas Bach, but say they do not alleviate its concerns about her well-being.

The 35-year-old had been widely considered to have been missing since making sexual assault allegations against Zhang Gaol, the ex-vice premier and member of the Chinese Communist Party's Politburo Standing Committee, more than three weeks ago.

According to the IOC, Peng said she is "safe and well" in the call with president Bach on Sunday.

The IOC said in a statement that Peng had spoken to president Bach for 30 minutes.

"She explained that she is safe and well, living at her home in Beijing, but would like to have her privacy respected at this time," the statement added.

"That is why she prefers to spend her time with friends and family right now. Nevertheless, she will continue to be involved in tennis, the sport she loves so much."

In response, a WTA spokesperson said: "It was good to see Peng Shuai in recent videos, but they don't alleviate or address the WTA's concern about her well-being and ability to communicate without censorship or coercion.

"This video does not change our call for a full, fair and transparent investigation, without censorship, into her allegation of sexual assault, which is the issue that gave rise to our initial concern."

Despite footage released by Chinese state-run media on Saturday purporting to show Peng in a restaurant with friends, followed by images of her at a youth tournament on Sunday, concerns have continued to be raised regarding her safety.

Serena Williams, Naomi Osaka and Novak Djokovic are among those to have called for answers on Peng's whereabouts.

Chinese tennis player Peng Shuai said she is "safe and well" in a video call with International Olympic Committee (IOC) president Thomas Bach on Sunday, the governing body said.

Peng had been widely considered to have been missing since making sexual assault allegations against Zhang Gaoli, the ex-vice premier and member of the Chinese Communist Party's Politburo Standing Committee, more than three weeks ago.

Despite footage released by Chinese state-run media on Saturday purporting to show Peng in a restaurant with friends, followed by images of the 35-year-old at a youth tournament on Sunday, concerns have been raised regarding her safety.

However, with the likes of Serena Williams, Naomi Osaka and Novak Djokovic calling for answers on Peng's whereabouts, the former world number 14 has now spoken publicly for the first time since November 2.

In a statement released on Sunday, the IOC said Peng had spoken to president Bach for 30 minutes.

The announcement added: "She explained that she is safe and well, living at her home in Beijing, but would like to have her privacy respected at this time.

"That is why she prefers to spend her time with friends and family right now. Nevertheless, she will continue to be involved in tennis, the sport she loves so much."

The statement included an image of the video call between Bach and Peng, who was smiling to the camera.

IOC member Li Lingwei and IOC Athletes Commission chair Emma Terho were also on the call, with the latter adding: "I was relieved to see that Peng Shuai was doing fine, which was our main concern. 

"She appeared to be relaxed. I offered her our support and to stay in touch at any time of her convenience, which she obviously appreciated."

Prior to Sunday's latest development, the Women's Tennis Association (WTA) called for more information about Peng.

"I am glad to see the videos released by China state-run media that appear to show Peng Shuai at a restaurant in Beijing," said WTA chairman and chief executive officer Steve Simon in response to the restaurant footage.

"While it is positive to see her, it remains unclear if she is free and able to make decisions and take actions on her own, without coercion or external interference. 

"This video alone is insufficient. As I have stated from the beginning, I remain concerned about Peng Shuai's health and safety and that the allegation of sexual assault is being censored and swept under the rug. 

"I have been clear about what needs to happen and our relationship with China is at a crossroads."