Serena Williams is bowing out, and she will end her remarkable career at the place she truly broke onto the world stage.

Williams' upcoming appearance at Flushing Meadows won't just be her last at the US Open, but her last in any tournament. She is retiring at the age of 40, with 23 grand slam singles titles to her name.

That is a record haul for any player, male or female, in the Open Era, but it is one short of Margaret Court's all-time tally.

Barring an unlikely charge for a first major win since the 2017 Australian Open, Court's record will remain intact for now.

The first slam singles title for Williams came way back in 1999, at the US Open. She has had ups and downs at the tournament through the years, but here Stats Perform looks at Williams' greatest Flushing Meadows achievements.

1999: Maiden grand slam success

Williams missed Wimbledon through injury but returned with a victory in Los Angeles at the JPMorgan Chase Open, setting the stage for an incredible maiden grand slam triumph. She defeated WTA greats Kim Clijsters, Conchita Martínez, Monica Seles and defending champion Lindsay Davenport to reach the final in New York. World number one Martina Hingis stood in her way, but the Swiss was no match – Williams won 6-3 7-6 (7-4) to truly make her mark at the age of 17.

2002: Sibling rivalry

Williams reached the final of the 2001 tournament, but it was her older sister Venus who triumphed. It was the first grand slam tournament to be contested by two sisters during the Open Era. The following year, the super siblings matched up in three of the four majors, and it was Serena who came up trumps in all three, capping that off with a 6-4 6-3 triumph at the US Open. The younger Williams sibling went on to win the Australian Open in 2003 too, sealing the 'Serena Slam' and making her the first player to hold the four major titles simultaneously since Steffi Graf in 1994.

2012: Azarenka challenge

Williams has enjoyed plenty of thrilling rivalries down the years, and, Venus aside, arguably the standout of them all has been the battle she has enjoyed with Victoria Azarenka. The pair have contested 23 matches in total, with Serena holding an 18-5 winning record. Their first meeting in a grand slam final came in 2012 at Flushing Meadows, in a season that had already seen Williams beat the Belarusian three times, including in the semi-finals of Wimbledon and in the last four of the London Olympics, also held at the All England Club, and she continued that run with a hard-fought 6-2 2-6 7-5 triumph in New York, battling back from 5-3 down and within two points of defeat in the deciding set to win a 15th major.

2014: Three in a row kick-starts Serena Slam II

Williams went on to defeat Azarenka again in the 2013 final, and she made it three US Open titles on the bounce with a straight-sets defeat of Caroline Wozniacki a year later. It saw Williams equal the Open Era record of 18 singles major titles, matching Martina Navratilova and Chris Evert, and she did not lose a set across the entire tournament. This triumph also paved the way for her second 'Serena Slam', as like in 2002-03, Williams went on to win all four majors in a row.

2020: History maker

No stranger to records, it is fitting that the last time Williams appeared at the US Open – before this year – she went on to etch her name into the Flushing Meadows history books yet again. A 7-5 6-3 first-round win over Kristie Ahn was hardly the most convincing of starts, but it saw Williams reach 102 match wins at the tournament, overtaking six-time champion Evert for the most career singles wins at the competition by a male or female player. She reached the semi-finals, becoming the first player in history to reach the last four of a major in four different decades (the 1990s, 2000s, 2010s and 2020s), but lost to old foe Azarenka, who in turn went down to Naomi Osaka in the showpiece.

Serena and Venus Williams have accepted a wildcard entry to play the women's doubles at the US Open.

The two-time doubles winners at Flushing Meadows are likely to appear at the tournament for the final time in 2022, with Serena having already announced her intentions to soon retire from tennis.

Both sisters have entered the singles draw, with Serena facing Danka Kovinic in round one while Venus begins her campaign against Alison van Uytvanck.

The pair have not played a major doubles event together since the 2018 French Open, suffering defeat in the third round, and were last paired in New York in 2014, when they reached the quarter-finals.

However, the duo boast 14 major doubles titles and three Olympic gold medals together and are to be reunited again after the US Open announced the 14 wildcard pairs for the doubles events on Saturday.

Serena's involvement at the US Open begins on Monday, with Venus following on Tuesday, before the first round of the women's doubles is scheduled for Wednesday and Thursday.

There seems to be no escaping the number 23 for Serena Williams as she prepares for an emotional final grand slam at the US Open.

It is 23 years since the legendary American won her first major singles title at Flushing Meadows, where she was also crowned doubles champion back in 1999.

Williams has gone on to win an astonishing 23 grand slam singles titles and 14 major doubles titles in an incredible career that is about to come to an end in New York.

One of the all-time greats turns 42 next month and although she is unlikely to bow out by claiming an elusive 24th major singles title in her home major, she is sure to be given a spine-tingling farewell.

Novak Djokovic's absence due to not being vaccinated against COVID-19 has been the big talking point in the men's singles, with Rafael Nadal getting an opportunity to extend his record tally of major successes.

Stats Perform picks out the standout numbers to preview the final major of the year as Emma Raducanu and Daniil Medvedev prepare to defend their titles.

Serena's incredible longevity

Such is the remarkable longevity of Williams' career, defending champion Raducanu and world number one Iga Swiatek were not even born when she won her first major.

Wimbledon champion Elena Rybakina was only a few months old when the iconic Saginaw native beat Martina Hingis in the 1999 US Open final for the first of so many major titles.

Only Chris Evert can boast as many US Open titles as Williams' tally of six in the Open Era, while she has played in a record 10 finals at Flushing Meadows.

The retiring veteran has 106 victories in her home major, a record in the Open Era, and only Martina Navratilova has recorded more wins in a single major - with 120 at Wimbledon.

Williams will be making her 21st main-draw appearance at the US Open, with only her older sister, Venus, bettering that figure in the Open Era as she prepares for her 23rd.

Long-awaited New York return for Nadal 

Nadal has not played at Flushing Meadows since he was crowned champion for a fourth time three years ago, having missed the 2020 tournament amid the coronavirus pandemic and not played last year due to a foot injury.

The Spanish great's hopes of completing a first calendar Grand Slam were ended by an abdominal injury that resulted in his withdrawal from Wimbledon ahead of a scheduled semi-final against Nick Kyrgios.

He could make it three major titles out of four this year in New York, though, where he will be bidding to take his haul of grand slam titles to 23 and move two clear of the absent Djokovic once again.

If Nadal lifts the trophy on Arthur Ashe Stadium, it would give him a record-equalling fifth US Open men's singles title - matching the haul of Jimmy Connors, Pete Sampras and Roger Federer.

Only Bjorn Borg (89.2 per cent) has a higher winning ratio in grand slam tournaments during the Open Era than Nadal's 88.3 per cent among players with at least 100 victories to their name, 

Another record in women's singles?

Teenage Brit Raducanu made history when she became the first qualifier to win a major title last year, beating Leylah Fernandez in the final.

Swiatek has dominated the women's game for much of this year, the highlight being her second French Open triumph.

With the retired Ash Barty, Swiatek and Rybakina taking the singles titles in 2022, there could be four different gram slam champions for a fifth consecutive season - excluding 2020 - and that would be the longest such streak in the Open Era.

Alcaraz to make major breakthrough?

While Nadal will be the Spaniard with the largest burden of expectation on his shoulders, Carlos Alcaraz should be a big threat in New York.

The 19-year-old could become the fifth player in the Open Era to reach at least the quarter-finals in his first two appearances at Flushing Meadows after Ken Rosewall, Arthur Ashe, John Newcombe and Johan Kriek.

Alcaraz has the joint-most ATP Tour titles this year with four, matching Nadal's tally.

At the age of 16, Serena Williams had a fairly confident grip on how the world saw her, and her older sister Venus.

"A lot of people think that black people can't rally, just think they're athletes and they can't think," Williams said at the 1998 Lipton Championships. "As you can see, that's not true. I can rally, Venus can rally."

And my word, how they could rally. As teenagers, then into their roaring twenties, onward into their thrilling thirties and even after turning 40.

Serena turns 41 next month and will retire after the US Open. She has been a title winner on tour in the 1990s, 2000s, 2010s and 2020s, a beacon to black youngsters with a dream everywhere.

It was a March day in Key Biscayne, Florida, when the teenage Serena floated her belief that racism was already circling the siblings.

She had just lost a deciding-set tie-break to WTA number one Martina Hingis in the quarter-finals of the Florida tournament, missing out on two match points. It was one of those occasions where Williams conceded she "could have rallied a little better".

The 40th-ranked youngster said she would "go home and work on that", and brushed off the missed match points by pointing out Pete Sampras had lost to Wayne Ferreira from the same position.

"Maybe I'm just like Pete. Maybe one day I'll be number one, too," Williams said, presciently.

Eighteen months later, she was the US Open champion, beating Hingis in the title match at Flushing Meadows. Bill Clinton, President of the United States, called after the match ended to offer his congratulations.

In that instant, the 17-year-old Serena said it felt "really amazing", but a day later her mood had darkened. Tennis life and fame was already proving wearing. Dad Richard had groomed the sisters for this life, but Serena, who had to give up her skateboarding hobby because of a wrist injury, realised she had left normal life behind.

"I mean, it's actually impossible for me to go out now," she said. "I can't go anywhere. From the beginning of the tournament, I just can't walk down the street.

"It's the same [at home]. You're driving, people honk their horns. It's actually kind of annoying."

Serena and Venus put up with garbage for many years. Whether it was horns honking, or critics honking, they were frequently served a raw deal.

At Wimbledon in 2000, it was tossed to Serena that "critics" were suggesting she and her sister might not be "as strategically aware as some of the other players", but that they were "incredible athletes with great bodies".

"We definitely have great bodies, yeah. Nice, slim, sexy shapes. They're right," Serena replied, unimpressed.

Later that year, after her US Open defence ended with a quarter-final loss to Lindsay Davenport, Williams discussed opposition to the prospect of sisterly dominance.

"I'm sure a lot of people never want to see an all-Williams final," said Serena. "It's going to happen in the future inevitably. Nobody's going to be able to stop it. Obviously, no one would want to see an all-Williams final because everyone doesn't really like us. That's just the way it is."

Those are depressing words to revisit, and they came as Davenport claimed Hingis had been urging her to beat Serena. Venus went on to beat Davenport in the final.

Yet, as Serena forecast, nobody could stop the sisters' march. Serena and Venus first matched up in a slam final in New York at the 2001 US Open, and Venus got the better of Serena.

They clashed again in five of six slam singles finals from the 2002 French Open through to Wimbledon in 2003, and Serena won every time. Across the next five years, she won a modest – by her astonishing standards – three further slams, but Williams was back at the height of her powers when she won both the Australian Open and Wimbledon in 2009 and 2010.

A near-disastrous accident said to have happened in a Munich restaurant, with Williams standing on some glass, followed just days after Wimbledon, and she did not play another slam until returning to London the following year.

It was there that Williams was handed a Court Two assignment for her second-round clash with a fledgling Simona Halep. I remember being on court that day, puzzled why this sporting colossus was sent out to a court that is seriously modest when matched up to Centre Court and Court One.

"They like to put us on Court Two, me and Venus, for whatever reason," Williams said afterwards. "I haven't figured it out yet. Maybe one day we'll figure it out."

It was put to Serena that the sisters might take it as an insult, given Novak Djokovic and Rafael Nadal tended not to be sent out to Court Two, an awkward spot in the grounds for superstars to reach without causing a fuss.

"Yeah, they're never moved across," said Serena. "I don't make it a big issue. I think at some point maybe I should."

She streaked together three US Open titles from 2012 to 2014, and further Wimbledon triumphs in 2012, 2015 and 2016. It seemed a matter of time before Williams went past Margaret Court's record 24 singles slams, removing any question mark over who is the greatest women's player of all time.

Slam number 23 arrived in Australia while Williams was in the early stage of pregnancy in 2017, and the birth of daughter Olympia was followed by another harrowing health scare.

Williams still reached four more slam finals, going all the way to the title matches at Wimbledon and the US Open in 2018 and 2019, but she could not land the elusive 24th. In fact, she did not win a set in any of those finals.

Defeat to Bianca Andreescu in the 2019 Flushing Meadows title match was hard to take, Williams acknowledged afterwards.

"I honestly don't think Serena showed up," said Williams. "I have to kind of figure out how to get her to show up in grand slam finals."

That was to be her last slam final, barring something most unexpected happening over the coming fortnight.

Serena saw room for improvement, but she 'showed up' more than often enough on the big stage.

She fought racists, sexists, ignoramuses and charlatans to get a foothold on tour, then made a mockery of the "black people can't rally" jibe.

Her 23 singles slams ranks as a record for the sport's Open Era. She has 365 grand slam match wins in singles, 59 more than second-placed Martina Navratilova.

It's one for every day of the year so far, but this great American will want more before that final farewell.

She announced her retirement in Vogue, a power move, just like having the likes of Beyonce, Jay-Z and Meghan Markle in her corner always was.

The pursuit of Court is up; just about, anyway. It probably helps that the likes of Billie Jean King and John McEnroe hold up Williams as the greatest of all time.

After her magazine piece, Williams spoke in Toronto about seeing "a light at the end of the tunnel".

"I can't wait to get to that light," Williams said, being serious but laughing hard.

What does it represent?

"Freedom," said Williams.

Serena Williams has made a wise move by asking Rennae Stubbs to help her prepare for a farewell US Open appearance, Chris Evert said on Friday.

Ahead of her 21st singles appearance at Flushing Meadows, Williams has brought in former doubles world number one Stubbs, and has been working closely on court with the Australian.

Stubbs has experience of coaching the likes of Karolina Pliskova, Eugenie Bouchard and Samantha Stosur, and the 51-year-old won six grand slam doubles titles, so knows all about performing on the big stage.

Her fresh input could prove invaluable, Evert believes, with Williams no longer having her long-time coach Patrick Mouratoglou in her corner. He now coaches Simona Halep.

Ahead of Williams' last event before retirement, Evert told ESPN: "I know she's been practising hard for this tournament.

"She has Rennae Stubbs helping her which is a positive thing. Rennae encouraged her to play matches against other women to get a taste of how other women play, because before she was just playing with her coach and not really moving a lot in practice, just hitting a lot of balls that were coming right to her.

"What I think she needs to work on more is playing the other women, knowing their game, moving corner to corner and getting that moving going. That's the only thing that's really preventing her from getting that A or B game at this point."

Williams begins her campaign on Monday against Danka Kovinic of Montenegro, the world number 80 who beat reigning US Open champion Emma Raducanu at this year's Australian Open.

Evert is the only woman in the Open Era (since 1968) to have reached more grand slam singles finals than Williams, one ahead of her fellow American after embarking on 34 runs to title matches.

However, Evert lost 16 of her finals, whereas Williams has been beaten only 10 times in 33 such matches.

The 40-year-old Williams therefore has 23 grand slam singles titles, putting her one short of the all-time record held by Margaret Court, but top of the Open Era list.

Evert does not believe Williams will be turning up purely to say goodbye.

"This is a big tournament for Serena Williams and this is an opportunity for people to really get one last look at her, and that's why everyone's trying to buy a ticket for Monday, Tuesday, Wednesday night," Evert said.

"She's transcended tennis, she's revolutionised tennis with her power game. But also off the court, her fearlessness and ability to just say whatever she wanted to say, not caring what people thought, her honesty, where she came from and how she's dealt with that.

"I feel she has so many different platforms where she's helped women: women who work who have children, women of colour. I can't say enough about the influence she's had on people."

It remains to be seen whether Venus Williams will follow Serena into retirement after the upcoming slam in New York, but few would be surprised.

At the age of 42, seven-time grand slam singles winner Venus would also deserve a rapturous send-off.

"Venus gets overshadowed by little sis," said Evert. "But Venus on her own has established, accomplished so much, won so many grand slams, singles and doubles, and handled this whole sister thing with grace."

Serena Williams will face Danka Kovinic in the first round as the American great begins her final US Open campaign.

It will be a final grand slam for 40-year-old Williams, who has won six singles titles in New York and been a runner-up on four occasions.

Her first singles crown in a major came as a 17-year-old at Flushing Meadows, when she beat Martina Hingis in the 1999 final.

Now the end of a glorious career is beckoning for the 23-time singles major winner, who has also landed 16 doubles grand slam titles.

Kovinic is the world number 80 from Montenegro, with the 27-year-old having only won two matches at the US Open in four previous main-draw appearances.

The winner of that match will likely face Estonian second seed Anett Kontaveit in round two. Kontaveit's first-round opponent will be Romanian Jaqueline Adina Cristian.

Defending champion Emma Raducanu, who was a shock winner last year, faces a tricky first-round assignment against France's Alize Cornet.

Cornet is the tour veteran who beat Iga Swiatek at Wimbledon, ending the Pole's 37-match winning streak, and this will be her 64th consecutive grand slam appearance, a record for WTA Tour players.

World number one Swiatek starts against Italian Jasmine Paolini and could face 2017 US Open champion Sloane Stephens in round two.

Former champion Naomi Osaka, unseeded this year, was paired with Danielle Collins, the 19th seed who was an Australian Open runner-up at the start of the year.

The tournament gets under way on Monday.

Men's defending champion Daniil Medvedev faces American Stefan Kozlov in his opener, while Rafael Nadal, who has not lost a grand slam match all year, faces Australian wild card Rinky Hijikata.

Nadal won the Australian Open and French Open titles before pulling out of Wimbledon ahead of his semi-final against Australian Nick Kyrgios due to an abdominal tear.

That handed Kyrgios a bye through to face Novak Djokovic, who got the better of the Australian, but the Serbian must miss the US Open because his refusal to be vaccinated against the COVID-19 virus meant he would not be allowed to enter the United States.

Djokovic's absence was confirmed shortly before the draw was revealed.

Fast-rising Spanish teenager Carlos Alcaraz begins against Argentina's Sebastian Baez, while fourth seed Stefanos Tsitsipas will face a yet-to-be-determined qualifier.

Retiring legend Serena Williams has indicated she "will always have some sort of involvement" in tennis as she prepares for the US Open, in what will be the final Grand Slam of her career.

The 40-year-old has won 23 major singles titles, while also adding 14 doubles championships in a brilliant career, but will be hanging up her racquet after she plays in the tournament she has won six times.

Her first time lifting the US Open trophy came in 1999, but even after spending over two decades at the top level of the sport, Williams says she will continue to be active in tennis.

"I will never retire from something I absolutely love," the American told Meghan Markle on the Duchess' new Spotify podcast.

"I will always have some sort of involvement in it. Maybe not professionally, but I will always want to be involved in some form in tennis. Obviously, I’ve retired professionally, but it’s also an evolution."

Williams also outlined her plans for the future, adding: "I really want to expand my family, and you know I’ve been putting it off for so long.

"As a woman, there’s only so long you can put that off and other people out there, other men out there, can continue to play. My best is being a mom; I think I can do really good at that."

Fellow tennis legend John McEnroe has heaped praise on Williams ahead of the tournament at Flushing Meadows, commenting: "The way that she moves the needle when she plays, it's like Tiger Woods and golf.

"You can look at the accomplishments, she has the Grand Slam victories. Off the court, I know that she's had a lot of difficulties in her life that she talks about in her own documentaries, but she has come out the other end as this icon, global superstar.

"Her story alone, what she represents as someone who's an African-American girl who came from a tough situation, and became the greatest player that ever lived. What that represents for us, and maybe around the world, is an opportunity that it can happen to anyone potentially."

Retiring legend Serena Williams has indicated she "will always have some sort of involvement" in tennis as she prepares for the US Open, in what will be the final Grand Slam of her career.

The 40-year-old has won 23 major singles titles, while also adding 14 doubles championships in a brilliant career, but will be hanging up her racquet after she plays in the tournament she has won six times.

Her first time lifting the US Open trophy came in 1999, but even after spending over two decades at the top level of the sport, Williams says she will continue to be active in tennis.

"I will never retire from something I absolutely love," the American told Meghan Markle on the Duchess' new Spotify podcast.

"I will always have some sort of involvement in it. Maybe not professionally, but I will always want to be involved in some form in tennis. Obviously, I’ve retired professionally, but it’s also an evolution."

Williams also outlined her plans for the future, adding: "I really want to expand my family, and you know I’ve been putting it off for so long.

"As a woman, there’s only so long you can put that off and other people out there, other men out there, can continue to play. My best is being a mom; I think I can do really good at that."

Fellow tennis legend John McEnroe has heaped praise on Williams ahead of the tournament at Flushing Meadows, commenting: "The way that she moves the needle when she plays, it's like Tiger Woods and golf.

"You can look at the accomplishments, she has the Grand Slam victories. Off the court, I know that she's had a lot of difficulties in her life that she talks about in her own documentaries, but she has come out the other end as this icon, global superstar.

"Her story alone, what she represents as someone who's an African-American girl who came from a tough situation, and became the greatest player that ever lived. What that represents for us, and maybe around the world, is an opportunity that it can happen to anyone potentially."

Serena Williams is "one of the greatest of all time", says fellow tennis legend Rafael Nadal as the 23-time grand slam winner prepares to hang up her racquet.

The 40-year-old, one of the most decorated players in the history of the sport, signalled her intent to "evolve away" from the game in an interview with Vogue Magazine earlier this month, hinting at her retirement following the U.S. Open in September.

With just shy of two-dozen grand slam singles titles, Williams trails only Margaret Court for the all-time record of 24 crowns, and could equal her in her farewell appearance.

Nadal, meanwhile, lies one behind her after victory in the Australian Open and French Open this year took him clear of Novak Djokovic and Roger Federer to 22, though the former's win at Wimbledon has seen him close the gap again.

The duo are set to feature at this week's Western and Southern Open, where Williams will face incumbent U.S. Open champion Emma Raducanu, and the Spaniard - who will mark his return from injury - has nothing but praise for his fellow giant of the game.

"She is one of the greatest sports [people] of all time," he stated. "I feel lucky to share a tour for a long period of time with her.

"Of course, from a selfish point of view, it's sad that she's leaving the tour but, on the other hand, we can't thank her enough for all the things that she did for our sport.

"I think she's an amazing inspiration for a lot of people around the world and I think she deserves to choose whatever works for her better at this stage of her life.

"So I wish her all the best. Hopefully, we can keep seeing her around the tour because I always believe that our sport, or the sport in general, is bigger and better when legends are around and she is a legend.

"Hopefully, we can enjoy her in a different way around the tour."

Nadal was forced to withdraw ahead of the Wimbledon semi-finals earlier this year with an abdominal tear, and now faces a potentially nervy run through to the U.S. Open in terms of fitness.

But the 36-year-old is cautiously optimistic, adding: "I hope to be ready. That's what I'm trying to do. Try to be a little more conservative, but I hope I can be ready to play.

"Of course, I need some more days to analyse how things are going in terms of abdominal feeling.

"But things are going well for the moment, so hopefully I can manage to be ready. I'm excited. I want to play tennis again on the tour. I'm having a good season, I'm enjoying it, so I want to enjoy this week in Cincinnati."

Serena Williams has been drawn to face reigning US Open champion Emma Raducanu in a blockbuster first-round match-up at next week's Cincinnati Masters.

Williams, who earlier this week declared her intention to retire after the upcoming US Open, will open her tournament on Monday evening against the 19-year-old Briton who is currently ranked 10th in the world.

The 23-time Grand Slam champion recorded her first singles win in more than a year at this week's Canadian Open, defeating Nuria Parrizas-Diaz on Monday, before losing in the second round to Belinda Bencic.

In between the matches, Williams had signaled her retirement plans in an article in Vogue magazine.

The first-round clash is one of several intriguing matches including 14th seed Karolina Pliskova meeting Venus Williams, two-time major winner Victoria Azarenka facing Estonian veteran Kaia Kanepi.

In-form Simona Halep is drawn against 2021 Australian Open semi-finalist Karolina Muchova, while four-time Grand Slam winner Naomi Osaka will face Zhang Shuai.

In the men's singles draw, 12th seed Matteo Berrettini will face Frances Tiafoe straight up, while Nick Kyrgios is scheduled to take on Alejandro Davidovich Fokina.

Laura Robson has hailed Serena Williams as the "greatest of all time" following the announcement of her retirement.

The 23-time grand slam winner confirmed on Tuesday she would be retiring from the court ahead of the US Open, which is now widely expected to be her final appearance at a major tournament.

Williams, who also boasts 14 doubles victories in grand slam events alongside her sister Venus, bid an emotional farewell to Toronto after her second-round defeat at the Canada Open on Wednesday.

The countdown is now on for the US Open, with fans holding the knowledge that every round could be her final farewell, and Robson believes the retirement decision will not have surprised many.

"It's difficult, because you know that it's coming. And I think everyone has been waiting for this announcement over the last few years," she told Stats Perform.

"But it's still very sad that it's finally here. You know, she has been such a great champion for decades now. 

"And I looked up to her growing up, I've got so many memories, watching Serena on TV, I've got my own memories from playing her as well, which is cool. 

"I'm just looking forward to being at the US Open, to seeing the atmosphere of her last few matches. And hopefully she goes on a bit of a run, that would just be electric."

Robson believes Williams is comfortably the greatest of all time in the women's game and added there is a strong argument she is the greatest overall in the sport.

"I think on the women's side, there's no doubt for me that Serena is the greatest of all time. You know, to win as many matches and titles and slams and Olympic medals as she has over the last couple of decades," she stated.

"Doing it all while having a child, going through life-threatening illnesses that she had after giving birth. So many injuries as well. So for me, yeah, on the women's side, definitely greatest of all time.

"There's an argument to be made for greatest in tennis in general, but everyone's got their own opinions on that. And yeah, that's an entirely different debate, because it's really, who you're a fan of the most that that comes down to."

Robson, who announced her own retirement in May, also identified with the tough decision Williams has had to make but feels she has played for "as long as possible".

"It sounds like from the Vogue article that she really doesn't want to retire, she's still struggling to come to terms with it," she added.

"But for me, I found as soon as I said it out loud and said it to the world it does make it a lot easier to wrap your head around. 

"So, for Serena you know, she's devastated to be stopping I'm sure she would love to keep playing by the sounds of it. She played it as long as possible until her body gave out but she's got other priorities in her life now. 

"It's about finding that balance, but it definitely sounds like she's devastated to step away from tennis."

Play Your Way to Wimbledon, Powered by Vodafone is the largest individual mass participation tennis competition in the UK - delivered by Vodafone in partnership with the LTA and The All England Lawn Tennis Club.

Serena Williams' decision to begin winding down her tennis career has saddened world number one Iga Swiatek and Belinda Bencic, who defeated the 40-year-old on Wednesday.

Williams announced on Tuesday that she is about to retire, saying "the countdown has begun" as she looks to "move in a different direction".

While the 23-time singles grand slam champion did not put a specific timeline on her remaining days in tennis, her comment about looking for new challenges after "these next few weeks" suggests the US Open – which she has already been included on the entry list for and starts at the end of August – will be her swansong.

That announcement came on the back of Williams' first singles win in 430 days, a defeat of Nuria Parrizas-Diaz at the Canadian Open in Toronto, but she was subsequently eliminated by Bencic on Wednesday, when the reality of her farewell tour set in.

Williams failed to hold back the tears as she said goodbye to the Toronto crowd for the last time as a player, and Bencic herself could not help feeling a little overcome

She said: "It was definitely very special. I think it was more than just the usual tennis match, also just really exciting, and also a little bit overwhelming for me, of course.

"[It's] great, I can be part of her career and her story and this was just really nice and I'm just really appreciative and honoured to play her so many times, and also here in Toronto.

"I mean, she's really the greatest of all time, so it's really exciting. I could have been on the court against her so many times and even today I really enjoyed it a lot. It was sometimes like a pinch me moment again."

Williams finished five different calendar years as the highest-ranked player in the world, a record only Steffi Graf and Martina Navratilova can better.

Swiatek, the current world number one, looks to be the best-placed of the next generation to challenge that achievement, though she recognises a degree of fortune in not having to face Williams at the peak of her powers.

"Well it's always pretty sad when you see such a career coming to an end, but on the other hand she's a legend and I feel like she's done so much," Swiatek added.

"It's really amazing. I'm pretty sad that I wasn't able to play against her and experience that her being the strongest one on tour, but on the other hand, I would be losing against her if I played [her at] that time, so that's fine!

"But she's a legend and everything that she has done on court and off court, she's basically a superstar and the way she handled playing tennis and business and also being a mother, it's mind-blowing. So I'm pretty sure that she's going to have a great second part of her career."