Serena Williams' long and illustrious tennis career looks to have drawn to a close after the American lost to Ajla Tomljanovic at the US Open on Friday. 

Following a long piece in Vogue last month, Williams wrote of her plan to "move in a different direction" after "these next few weeks", suggesting the tournament at Flushing Meadows would be her last outing.

Thanks to her success and brilliance on the court, Williams has become synonymous with tennis and is regarded by many as the greatest the women's sport has ever seen.

At the age of 40, Williams has persisted with tennis far longer than most do, and that is testament to her quality and enduring desire for success.

Though Williams left a glimmer of a chance that she may yet play again, joking that she "always did love Australia", she may well have taken to the court for the last time. Here, Stats Perform takes a look at the key facts, stats and figures of her career; in other words, Serena's remarkable legacy.

Twenty-three… and done?

Of course, the headline fact for Williams' career is her grand slam titles count.

She has won 23, which is more than anyone else in the Open era.

But she still had one target left: matching Margaret Court. The Australian's 24 grand slam successes include nine won before the Open era began in 1968, though her overall total has been the benchmark ever since she claimed her final crown at the US Open in 1975.

Clearly, victory for Williams at Flushing Meadows would have been the perfect farewell, but it was not to be. Will that near-miss encourage her to take one more shot in Court's homeland next year?

The finals hurdle

Had Williams managed to reach the championship match in Queens, she would have equalled another record.

She headed into the US Open having played in 33 grand slam finals, one more than Martina Navratilova.

But Chris Evert (34) sits out in front, and that record is now set to remain hers for many, many years.

Top of the pile

It's been a while now since Williams was last the highest-ranked player in the world, but in a way that only further highlights how remarkable her career has been.

She's spent 319 weeks ranked as world number one, which is behind only Steffi Graf (377) and Navratilova (332).

While many might have expected Williams to have been top of the pile for even longer, it's worth remembering how she's spent time out due to injuries and pregnancy, with her general involvement in top-level tennis decreasing after 2014 when she played 16 tournaments – in 2016 that halved to eight, and during no year since has she played in more.

Additionally, some will also be surprised to learn she actually only finished the year as the top-ranked female player five times. Nevertheless, that's still third to only Graf (eight) and Navratilova (seven).

Go hard or go home

Such has been Williams' quality, she was always considered a threat regardless of the surface – she's won each grand slam at least three times.

But there's no denying she was at her most lethal on hard courts.

She has won 48 WTA Tour-level titles on hard courts, which is 11 more than anyone else (Graf) in the Open era.

Those 48 come from a grand total of 73 across all surfaces, leaving her ranked fifth behind Navratilova (167), Evert (157), Graf (107) and Court (92).

Surface to say…

Williams' comfort on hard courts goes even further than that.

She's won 541 matches on the surface, making her one of just two female players to surpass 500 victories on one specific ground type.

Navratilova (600 on carpet) is the only other player to achieve the feat, with Serena's sister Venus (498 on hard) the closest to the 23-time grand slam champion.

The grass is greener

Despite that unrivalled excellence, hard courts may not be the surface many feel to be most synonymous with Williams, however.

Wimbledon is the tournament that would appear to be her favourite.

She's reached the final at SW19 11 times. Only Navratilova can better that record for the most finals at one tournament – though it's worth saying she contested the WTA Finals and Chicago 14 times each, Eastbourne 13 times and 12 at Wimbledon.

Jordan. Ali. Woods. Williams. That's it, that's the company.

Serena Williams is about to draw the curtain on one of the great sporting careers.

A brilliant black sports star excelling on a global stage, she has shifted and shaped opinions over the past 25 years.

Her life has been touched by tragedy as well as great joy, and she has just about lived to tell the tale.

As she prepares for her final US Open, Stats Perform looks back at the obstacles that have been put in front of the 23-time grand slam champion. 

Racism since her early days

After learning the game in Compton, Williams and sister Venus endured plenty of outrageous treatment before a notorious incident in 2001 at Indian Wells.

Russian Elena Dementieva reacted to a quarter-final defeat to Venus by saying the semi-final between the sisters would be determined by their father, Richard. That baseless allegation of manipulation was followed by an injured Venus withdrawing from the match against Serena shortly before its start time.

Serena met Kim Clijsters in the final, and there were grim jeers for Venus and Richard when both took their grandstand seats. They and Serena copped brutal treatment from spectators, with Richard stating he was racially abused.

Serena beat Clijsters but did not play at Indian Wells again until 2015, recalling her memories of 2001 in an article for Time, explaining it had "haunted" the family, particularly her father.

She wrote: "He dedicated his whole life to prepping us for this incredible journey, and there he had to sit and watch his daughter being taunted, sparking cold memories of his experiences growing up in the South."

Williams told Sirius XM in February 2021: "I had to make people realise that it's okay to be black and to play tennis."

Sexism never far away

Williams considered causing a scene at Wimbledon in 2011 after being sent out to the distant Court Two to play a second-round match.

It seemed a bizarre move – probably just ignorant – to put the defending women's champion anywhere but Centre or Court One, and while she was reluctant to fully vent her frustration, it was obvious enough.

Seemingly pointing a finger at those in power, Williams said: "They're not going to change."

An angry Williams accused chair umpire Carlos Ramos of sexism in a stormy 2018 US Open final, when she lost to Naomi Osaka.

Williams was warned for receiving coaching on court, which she denied, then penalised a point for racket abuse, before being docked a game after accusing Ramos of being "a thief".

"I'm here fighting for women's rights and for women's equality and for all kinds of stuff," Williams said afterwards. "For me to say 'thief' and for him to take a game, it made me feel like it was a sexist remark. He's never taken a game from a man because they said 'thief'."

Williams was fined $17,000 by tournament chiefs but backed by the WTA, which runs the women's tour outside the slams.

Perilous childbirth

In February 2018, Williams wrote an article for CNN that began with the line: "I almost died after giving birth to my daughter, Olympia."

She wrote of having had "a pretty easy pregnancy" and a routine C-section in August 2017, only for that to be followed by a pulmonary embolism and "a slew of health complications" she was "lucky to have survived", including a large hematoma in her abdomen. Her first six weeks as a mother were spent in bed.

Sister's death

It was September 2003, shortly after Williams underwent knee surgery that forced her out of the US Open, that her sister Yetunde Price was shot and killed in Compton.

Price was 31, with a local gangster sentenced to 15 years for voluntary manslaughter.

Williams addressed court after the April 2006 sentencing of Price's killer, saying she had "wanted to let you know that this was unfair to our family, and our family has always been positive and we always try to help people".

In 2018, Williams was trounced 6-1 6-0 by British player Johanna Konta at the Silicon Valley Classic. She came onto court moments after learning the man who shot her sister dead had been freed from prison, and later told Time: "I couldn't shake it out of my mind."

Walking on broken glass

It's an idiom, and an Annie Lennox song, but walking on broken glass was almost the moment that ended Williams' career.

It could have been a case of unlucky 13 for Williams in July 2010 when within days of winning her 13th grand slam title she suffered a foot injury, and later revealed it had been caused by stepping on glass while leaving a Munich restaurant.

She told USA Today: "I was standing, recovering, thinking I got a little cut and telling my nephew, who was with us, to be careful. Then my practice partner put a cellphone down to the floor so we could see, and there was a huge puddle of blood. I said, 'OMG, I don't think this is good'."

She needed both feet stitching up and underwent surgery to fix a drooping big toe, missing almost a full year on tour. Early in 2011 she underwent treatment for a pulmonary embolism and blood clot in her lungs, after checks were carried out during her recovery.

Chasing Court

Margaret Court has been the figure Williams has chased but looks destined to fall short of, with the Australian set to remain tantalisingly out of reach.

Four final losses for Williams since landing her 23rd major have been increasingly agonising, and it has been clear that her primary motivation for playing on all this time has been to surpass Court.

Court's controversial views on the LGBTQ community have upset many in tennis. Williams, however, just wanted to finish top of the pile, regardless of who was presently leading the way in the grand slam race.

Barring a sporting near-miracle over the US Open fortnight, she will remain second in that race, albeit the grand slam leader in the Open Era – winner of the most titles since the majors embraced professionalism in 1968.

Serena Williams' long and illustrious tennis career is drawing to a close after the American confirmed on Tuesday that the countdown has begun.

Following a long piece in Vogue, Williams wrote of her plan to "move in a different direction" after "these next few weeks", suggesting the US Open – which begins in late August – will be her last outing.

Thanks to her success and brilliance on the court, Williams has become synonymous with tennis and is regarded by many as the greatest the women's sport has ever seen.

Yet, her seemingly imminent retirement cannot be seen as a shock. At the age of 40, Williams has persisted with tennis far longer than most do, and that is testament to her quality and enduring desire for success.

With Williams now reaching the end, Stats Perform takes a look at the key facts, stats and figures of her career; in other words, Serena's remarkable legacy.

Twenty-three… and counting?

Of course, the headline fact for Williams' career is her grand slam titles count.

She has won 23, which is more than anyone else in the Open era.

But she's still got one target left: matching Margaret Court. The Australian's 24 grand slam successes include nine won before the Open era began in 1968, though her overall total has been the benchmark ever since she claimed her final crown at the US Open in 1975.

Clearly, victory for Williams at Flushing Meadows would be the perfect farewell.

The finals hurdle

Even if Williams only reaches the championship match next month, she'll still be equalling a different record.

Assuming she does compete in Queens, Williams heads into the US Open having played in 33 grand slam finals, one more than Martina Navratilova.

But Chris Evert (34) sits out in front, and that record will remain hers for many, many years if Williams cannot reach the finale at Flushing Meadows.

Top of the pile

It's been a while now since Williams was last the highest-ranked player in the world, but in a way that only further highlights how remarkable her career has been.

She's spent 319 weeks ranked as world number one, which is behind only Steffi Graf (377) and Navratilova (332).

While many might have expected Williams to have been top of the pile for even longer, it's worth remembering how she's spent time out due to injuries and pregnancy, with her general involvement in top-level tennis decreasing after 2014 when she played 16 tournaments – in 2016 that halved to eight, and during no year since has she played in more.

Additionally, some will also be surprised to learn she actually only finished the year as the top-ranked female player five times. Nevertheless, that's still third to only Graf (eight) and Navratilova (seven).

Go hard or go home

Such has been Williams' quality, she was always considered a threat regardless of the surface – she's won each grand slam at least three times.

But there's no denying she was at her most lethal on hard courts.

She has won 48 WTA Tour-level titles on hard courts, which is 11 more than anyone else (Graf) in the Open era.

Those 48 come from a grand total of 73 across all surfaces, leaving her ranked fifth behind Navratilova (167), Evert (157), Graf (107) and Court (92).

Surface to say…

Williams' comfort on hard courts goes even further than that.

She's won 539 matches on the surface, making her one of just two female players to surpass 500 victories on one specific ground type.

Navratilova (600 on carpet) is the only other player to achieve the feat, with Serena's sister Venus (498 on hard) the closest to the 23-time grand slam champion.

The grass is greener

Despite that unrivalled excellence, hard courts may not be the surface many feel to be most synonymous with Williams, however.

Wimbledon is the tournament that would appear to be her favourite.

She's reached the final at SW19 11 times. Only Navratilova can better that record for the most finals at one tournament – though it's worth saying she contested the WTA Finals and Chicago 14 times each, Eastbourne 13 times and 12 at Wimbledon.

Novak Djokovic intends to compete at the US Open at the end of August, but will not risk a reoccurrence of the vaccination-related furore that saw him deported from Australia.

The Serbian lifted his seventh Wimbledon title earlier this month, moving level with Pete Sampras for the second-most wins at the All England Club, only behind Roger Federer (eight).

Djokovic also returned to just one grand slam title behind Rafael Nadal's record of 22, with the US Open that starts on August 29 the final headline act of the 2022 season.

While Djokovic enjoyed more Wimbledon success, it was only his second major of the year after the world number seven missed the Australian Open in January due to his refusal to be vaccinated.

His insistence to not take the vaccination against COVID-19 also saw him miss the Indian Wells Masters in March, owing to the United States' coronavirus rulings.

The United States still does not allow unvaccinated foreigners to enter the country without an exemption – meaning Djokovic's ability to appear in New York is in doubt.

Despite expressing his hopes to feature at the hard-court major, Djokovic insisted he will not be willing to face a repeat of the ongoings in Australia in order to compete.

"I'm not going to go to America if I don't have permission, so the Australian saga for me was not pleasant at all," he said after opening a tennis complex in the Bosnian town of Visoko.

"People still think I forced my way to Australia and tried to come in with no papers, permission or exemption – it is not true.

"That was proven in the court cases, so I would never go into a country where I didn't have permission to travel. I would love to come back to Australia. I love Australia, I had my best Grand Slam results in that country.

"Hopefully I can be there in January because I want to be there, and I also want to be in New York. I want to be in America and everywhere I can possibly play."

Djokovic remains hopeful for a change in policy in America given he has no intentions to take the vaccination, nor does he envisage an exemption coming.

"I am a professional tennis player, I don't go into politics or anything else because that doesn't interest me," he added.

"I have my stance and I am a proponent for freedom to choose what is best for you. I respect everything and everybody, and I expect people to at least respect my decision.

"If I have permission, I'll be there. If I don't, I won't be there – it's not the end of the world."

Novak Djokovic is hoping for a change of policy to allow him to feature at the US Open after ending an "exhausting and demanding period" by winning his seventh Wimbledon title.

Djokovic clinched his 21st grand slam win by recovering from one set down to beat Nick Kyrgios in Sunday's Wimbledon final, moving to within one major title of Rafael Nadal's record of 22.

On his 32nd grand slam final appearance – an Open Era record – the Serb claimed his fourth consecutive title at the All England Club with a 4-6 6-3 6-4 7-6 (7-3) victory in a tense encounter.

But it has not been plain sailing for Djokovic this year, who missed January's Australian Open after being deported over his refusal to be vaccinated against COVID-19, and was unable to enter the United States to play the Indian Wells Masters in March.

The United States still does not allow unvaccinated foreigners to enter the country without an exemption – meaning Djokovic's ability to appear in New York is in doubt.

But he is hopeful a change in policy could alter that state of affairs before the tournament gets underway on August 29, as he reiterated he would not get vaccinated and saw an exemption as unlikely. 

"It is a weird situation," Djokovic said. "I am on vacation. It has been quite an exhausting and demanding period for me. I got what I wanted here. 

"I'll wait hopefully for some good news [a change of policy] from the US. I'm not vaccinated and I'm not planning to get vaccinated. I don't think exemption is realistically possible.

"We'll have to see what the schedule looks like then. I doubt I'll chase points. Things have changed in the last year and a half for me. 

"I achieved the historic weeks of being ranked number one, that I worked for all my life. Now I prioritise slams and big tournaments where I feel good."

Djokovic's Wimbledon triumph comes at the end of a challenging few months, with the 35-year-old losing year's US Open final and exiting the 2022 French Open to Nadal either side of his much-publicised deportation from Australia. 

And the Serb, who claimed a first career win over Kyrgios on the biggest stage on Sunday, acknowledged: "This year has not been like last year.

"In the first several months of the year I was not at a good place mentally, emotionally. Everything that followed Australia has been a huge challenge and obstacle for me to overcome emotionally. 

"It wasn't that easy to close that chapter. It caused turbulence inside of me and I just had to weather the storm.

"I realised it would take time to regroup and rebalance. All these things off the court were causing so much distraction and pressure for me and the people around me. You can’t pretend it's not happening.

"By Rome and Paris I was already playing the tennis that I want to play. I liked my chances coming into Wimbledon. I think I managed everything pretty well today.

"Now I'm over the moon with joy and happiness of experiencing this moment once again. I don't take any wins for granted, and particularly not in Wimbledon. Every time feels special in its own way.

"Centre court and this tournament still has the most special place in my heart because it has always been my childhood dream tournament. Every time I step out on court it does not feel like anything else. I feel very connected with this court and this tournament. I'm very happy."

Rafael Nadal says it is "crazy" for people to even consider him completing the calendar Grand Slam after triumphing at the Australian Open and French Open.

The Spaniard returned from his long battle with a foot injury to claim the first major of the year in Melbourne, moving clear of Roger Federer and Novak Djokovic for the most grand slam titles in men's history.

Nadal added a record-extending 22nd major to his collection as he lifted a 14th French Open title on Sunday with a straight-sets victory over Casper Ruud.

The 36-year-old was given a couple of injections before every match and will undergo radio frequency injections in a bid to ensure he can go in search of a third major title of the year at the All England Club.

Nadal remains unsure whether he would undergo a major operation to prolong his career, but hopes to be able to be in London when Wimbledon starts on June 27.

Success on the grass courts of Wimbledon would be a third major of the year before the US Open starts at the end of August, but Nadal insists he cannot look that far ahead on his quest for all four grand slams.

"It's crazy to think about completing the Grand Slam after Australia and Roland Garros," he told

"I don't even consider it. More than winning the Grand Slam, I would sign up just to be able to play all four tournaments.

"It's crazy. To win all four, it seems crazy to me because it is something that nobody has done since Rod Laver. 

"The one who came closest was Novak last year. It's crazy to think about it."

While Nadal remains in contention for the calendar Slam, he continues to battle through a foot injury that has plagued him throughout his career.

But the prospect of retirement does not concern Nadal, who is prepared for life after tennis given the amount of times he has thought injury would curtail his playing days.

"I imagine just as I have experienced it many times in my career that I have had to be out of competition for months due to injuries," he added. 

"I have always been happy outside of tennis. It is not something that makes me lose sleep or have any fear of my life after tennis. 

"I have and have always had many things that make me happy beyond tennis."

Novak Djokovic hopes to have his visa reinstated so he can return to feature at the Australian Open following a change of government Down Under.

Djokovic eased to a 6-3 6-3 6-2 victory over Aljaz Bedene at the French Open on Friday to set up a last-16 clash with Diego Schwartzman.

The world number one remains on course to meet record 21-time grand slam winner Rafael Nadal in the quarter-finals at Roland Garros, in what is the Serbian's first major of the year.

Djokovic was banned from playing at the Australian Open in Melbourne and was deported from the country due to his unvaccinated COVID-19 status in January.

The 34-year-old cannot be granted another visa for three years due to Australia's immigration laws, but former Australian Prime Minister Scott Morrison previously suggested he could be allowed entry sooner under the "right circumstances".

Djokovic hopes the arrival of new Australian Prime Minister Anthony Albanese will boost his visa-related hopes of featuring in Melbourne at the start of 2023.

"In terms of the government, yes, I heard the news, but, I mean, I don't know anything about whether my visa is going to be reinstated or whether I'm going to be allowed to come back to Australia," he told reporters.

"I would like to. I would like to go there and play Australian Open. I don't hold any grudges. Look, you know, it was what it was.

"If I have an opportunity to go back to Australia and play a place where I made the biggest success in my career in Grand Slams, I would love to come back."

As for the next clash with Schwartzman as Djokovic aims to equal Nadal's 21 grand slams, the Serbian is expecting a tough test in Paris.

"Well, he's one of the quickest players we have on tour, and his best results in his career came on clay, so of course he's a tough opponent without a doubt," he added. 

"I know him well. We played some really good matches on different surfaces. So playing against him, you always have to expect another ball coming back. I'm ready for the physical battle.

"I haven't spent too much time on the court. I have been striking the ball really well, so I look forward to that challenge."

You don't know what you've got until it's gone.

That is how tennis fans the world over will be feeling after women's world number one Ash Barty shockingly announced her retirement on Wednesday.

Barty noted that achieving a lifelong goal of winning Wimbledon last year and being "spent physically" were motivating factors behind her decision.

The 25-year-old bows out on top having lifted her home slam at the Australian Open back in January, and is a three-time singles major champion.

Following news of her retirement, Stats Perform has delved into some of Barty's best facts from a stellar career.

SECOND ONLY TO OSAKA IN SLAMS SINCE 2016

There have been 14 different singles grand slam champions in a stacked women's game since 2016.

In that time, Barty has women three major titles – the second most alongside Angelique Kerber. Indeed, the only player to have more in the women's game over that period is Naomi Osaka with four.

Barty retires on a 13-match winning streak (all on hard courts), a run that of course includes her triumph at the Australian Open.

It matches the best run of her career, with Barty proving 13 is not unlucky for all by racking up the same amount of wins on clay and grass between May and June 2019 – that stretch having seen her lift her first slam at the French Open.

KVITOVA A FAMILIAR FOE

Barty has mixed it with the best in the women's game but she has faced no player more than two-time Wimbledon champion Petra Kvitova.

She has faced the Czech on 10 occasions, with the two sharing five wins apiece. Barty has also beaten Sofia Kenin, Karolina Pliskova, Shelby Rogers and Kiki Bertens on five occasions.

Caroline Wozniacki (3) and Mona Barthel (2) are the only players Barty has faced more than once but never beaten in women's tennis.

Conversely, Barty has defeated each of Marketa Vondrousova, Camila Giorgi, and Saisai Zheng four times from as many attempts, her most matches against any players against whom she has maintained a 100 per cent win rate.

STILL GOING STRONG

Never has the saying "always leave them wanting more" been truer than in the case of Barty.

She has averaged seven aces per match in women's tennis in 2022, the joint-most of any player alongside China's Qinwen Zheng and Hailey Baptiste of the United States.

Barty has made 77 aces in total in 2022, the joint-sixth most of any player but 30 fewer than WTA leader Madison Keys (107).

Moreover, she has won 94 per cent of service games, the highest rate of any player and eight percentage points higher than second-ranked Elena Rybakina of Kazakhstan.

Barty won 71 per cent of her points when serving this calendar year, the highest rate of any player and four percentage points higher than second-most Rybakina.

Indeed, Barty did not lose a match in her shortened 2022 season, finishing 11-0 and winning 25 of her final 26 matches. 

114 WEEKS AND OUT

Barty is the second female player to step away from the game when ranked world number one, with Justin Henin having done so in 2008 after 61 consecutive weeks at the top.

Barty does so having racked up 114 straight weeks at the summit of the rankings, a run which represents the fourth longest in the history of the WTA Tour behind only Steffi Graf (186 weeks), Serena Williams (186) and Martina Navratilova (156).

Her accumulated total of 121 weeks represents the seventh highest of all time. Barty finishes her career with 15 singles titles in total and 12 in doubles, while she ends with a 305-102 win-loss singles record, and 200-64 in doubles.

Ash Barty stunned the sporting world on Wednesday by announcing her retirement from tennis, bowing out as the top-ranked player in the women's game.

The popular 25-year-old has not featured since winning her home grand slam at the Australian Open in January, becoming the first female Aussie singles champion of the tournament since Chris O'Neil in 1978.

Announcing the news on her Instagram page, Barty cited achieving a lifelong goal of winning Wimbledon last year as a primary factor behind her decision as well as being "spent physically".

But Barty is by no means the first sporting hero to retire at the top of their game. Below we take a look at some other examples of those who have exited as champions.

ALAIN PROST

The 1993 Formula One season was largely dominated by one man – Williams driver Alain Prost. The Frenchman had to battle hard with the iconic Ayrton Senna at the start of the campaign, with them each taking three wins from the first six races of the season. However, a run of four straight victories for Prost were followed by a string of retirements for Senna, ensuring a fourth world title that provided the ideal ending to a glittering career.

ALEX FERGUSON

One of the most successful managers in world football, Alex Ferguson began a 27-year stint at Manchester United after an excellent spell at Aberdeen. The Scot won 28 major trophies at Old Trafford, including 13 Premier League titles, five FA Cups and two Champions Leagues. His final trophy came with top-flight glory in 2012-13, and 17 days later he brought the curtain down.

PEYTON MANNING

Considered one of the greatest quarterbacks of all time, Peyton Manning won his first Super Bowl with the Indianapolis Colts in 2007 and, after an injury-blighted season that raised doubts about his ability aged 39, he added a second with the Denver Broncos in 2016, bowing out on the ultimate high.

RICHIE MCCAW, DAN CARTER

New Zealand became the first nation to successfully defend the Rugby World Cup trophy by beating Australia 34-17 in the final at Twickenham in 2015, adding to their success on home soil four years prior. It proved the end of the line for captain Richie McCaw, who was at the time the most capped player in rugby union with 148 appearances for the All Blacks, as well as mercurial fly-half Dan Carter. Ma'a Nonu, Conrad Smith and Kevin Mealamu were also among an influential contingent that opted to end their international careers.

PETE SAMPRAS

In defeating Andre Agassi in the final of the 2002 US Open, the same opponent he overcame to win his first grand slam 12 years prior, Pete Sampras secured his place among the greats in men's tennis. It was a then-record 14th major singles title for a male player for the American, a milestone that has since been surpassed by Roger Federer, Rafael Nadal and Novak Djokovic, but he did not compete again and announced his retirement almost one year later.

PHILIPP LAHM, MIROSLAV KLOSE

At 31 you still have a number of years ahead of you in football. However, after lifting the World Cup trophy with Germany in 2014, Philipp Lahm decided to call time on his international career and focus on club football with Bayern Munich. The versatile full-back made 113 appearances for his country and was joined by fellow centurions Per Mertesacker and Miroslav Klose – whose tally of 71 international strikes is a German record – in switching focus to domestic matters.

MARION BARTOLI

A first grand slam at Wimbledon in 2013 appeared to be the breakthrough moment for a 28-year-old Marion Bartoli, but reality proved very different. The Frenchwoman defeated Sabine Lisicki – who had overcome pre-tournament favourites Serena Williams and Agnieszka Radwanska – in the All England Club final, but announced her retirement during the Western and Southern Open just 40 days later due to persistent injuries. She attempted a comeback in 2018 but continued setbacks and injuries curtailed those plans.

NICO ROSBERG

Nico Rosberg had engaged in several intense battles with Lewis Hamilton before finally getting the better of his Mercedes team-mate to become Formula One world champion in the 2016 season. Still only 31, Rosberg had potentially several more years in F1 but the German instead opted to depart having reached the pinnacle of his sport.

The Grand Slam Board has announced that first-to-10 tie-breaks will conclude the final sets of all four majors with immediate effect.

Starting with May's French Open, the decision is being adopted on a trial basis with the aim of providing "greater consistency" to the rules when matches go the distance.

Prior to Wednesday's announcement, the French Open, Australian Open, US Open and Wimbledon each had their own rules when games went to a deciding tie-break.

The Australian Open is the only grand slam to already employ the first-to-10 rule at 6-6.

Wimbledon previously played first-to-seven at 12-12, while the US Open played a first-to-seven at 6-6.

There has not previously been a deciding tie-break at Roland-Garros, with all matches continuing until a player secured a two-game lead in the decider.

A statement released on behalf of Grand Slam Board members Jayne Hrdlicka, Gilles Moretton, Ian Hewitt and Mike McNulty confirmed the changes.

It read: "The Grand Slam Board's decision is based on a strong desire to create greater consistency in the rules of the game at the Grand Slams, and thus enhance the experience for the players and fans alike.

"This trial, which has been approved by the rules of the tennis committee governed by the ITF, will apply to all Grand Slams across qualifying, men's singles and doubles, women's singles and doubles, wheelchair and junior events in singles, and will commence at the 2022 edition of Roland-Garros."

The rule change will be reviewed after a full Grand Slam year and will remain in place should it be deemed a success.

The tweaks to the current format will ensure no repeat of John Isner's marathon battle with Nicolas Mahut at Wimbledon in 2010, which the American edged 70-68 in the final set of their first-round match.

The ATP, WTA, International Tennis Federation (ITF) and the four grand slam organisers have announced the Tennis Plays for Peace campaign.

Along with the campaign, which will include efforts on social media and at tournaments, each of the seven organisations has pledged to donate $100,000 to humanitarian relief efforts in Ukraine.

Russia invaded the country on February 24 and the conflict is still ongoing. Well over one million refugees are estimated to have fled to neighbouring countries in Europe.

A joint statement from tennis' governing bodies on Tuesday explained that the campaign is not just about donations.

"The seven bodies will also signal support via their social and digital platforms by prominently featuring the Ukraine ribbon icon, with everyone in the tennis ecosystem encouraged to use the hashtag #TennisPlaysforPeace," it read.

"In addition, physical ribbons will be distributed for ATP and WTA players to wear at the upcoming BNP Paribas Open tournament in Indian Wells."

Last week, the ITF banned Russian and Belarusian teams from competing at the Davis Cup or the Billie Jean King Cup. Russia are the holders of each title.

The ATP and WTA, meanwhile, allowed Russian and Belarusian athletes to carry on competing, but only under neutral banners.

That includes ATP world number one Daniil Medvedev and WTA world number three Aryna Sabalenka.

New world number one Daniil Medvedev says Friday's Mexican Open semi-final against Rafael Nadal is his "chance to get my revenge" after last month's epic Australian Open defeat.

Medvedev progressed to the final four in Acapulco on Thursday with a routine 6-2 6-3 victory over Yoshihito Nishioka, while Nadal triumphed 6-0 7-6 (7-5) over Tommy Paul to set up their semi-final meeting.

The Russian's win capped a fine day after Novak Djokovic's loss to Jiri Vesely at the Dubai Tennis Championships meant he would next week become the new world number one for the first time in his career.

Before then, however, Medvedev must take on Nadal in Acapulco, with the pair having not faced off since last month's epic Australian Open decider, where the Spanish fought back from two set downs to clinch a record-breaking 21st major title.

"It’s always special to play against him,” Medvedev said following his win over Nishioka. “Kind of a chance to get my revenge.

“I have to learn from the best, which is him, Roger [Federer], Novak [Djokovic], Andy [Murray]. Always when they were losing a tough fight, they were trying to get their revenge. Sometimes they managed to do it, sometimes not. That’s what I’m going to try to do if I play Rafa."

Medvedev revealed he did not realise that Djokovic's loss would mean he would become number one until he started receiving congratulatory messages on Thursday.

"It’s not easy to play a match when you get this news during the day," Medvedev said.

"The first goal for me was to still win today because I’m here to try to win every match I play. But it’s definitely some great news."

Nadal was full of praise for the new world number one, admitting his excitement at their re-match.

The Spaniard prevailed in five hours and 28 minutes over Medvedev in Melbourne, winning 2-6 6-7 (5-7) 6-4 6-4 7-5 and was ready for the re-match.

"Everybody knows how difficult it is to play against Daniil," Nadal said after Thursday's win over Paul.

"I know I have to play at my highest level if I want to have any chance, and that's what I'm going to try. I have to play my game.

"Everybody knows how difficult the final was in Australia. Tomorrow is going to be another battle.

"I know he's playing well, plenty of confidence... I am excited to play that match."

Novak Djokovic welcomed the "positive" reception he has received from his fellow players, after making his first appearance since missing the Australian Open.

Djokovic, whose decision not to be vaccinated against COVID-19 caused him to be deported from Australia on the eve of the year's first grand slam, eased to a 6-3 6-3 win over Lorenzo Musetti in just 74 minutes at the Dubai Tennis Championships.

Djokovic spoke publicly about his vaccination status for the first time in a BBC interview last week, while rival Andy Murray, who has spoken about his support for vaccination on numerous occasions, said that he "didn't like seeing" Djokovic's ordeal in Australia after his own win in Dubai.

Serbia's 20-time Grand Slam winner says that most of his fellow professionals have been supportive upon his return to action.

"So far here most of the players that I’ve seen – I haven’t seen too many players – but most of the players that I've seen have been positive and welcoming", he said after his round-of-32 win.

"It's nice to see, obviously. I can't say that was the case in Australia. It was a little bit strange. But here, it's gone well so far."

The 34-year-old impressed against Musetti, serving five aces, winning 71 per cent of his second serves (17 out of 24) and saving each of the seven break points he faced during his first outing of the year, and Djokovic was also pleased with the reception he received from the fans in Dubai, as well as with his performance. 

"I couldn't ask for a better reception," he added.

"It's been a while since I played, and I couldn't think of a better place to kick-start the season. Thank you for the reception and for welcoming me on court the way you did.

World number one Novak Djokovic has praised Rafael Nadal for his "incredible" triumph by winning last month's Australian Open after his own deportation forced him to miss the event.

Nadal moved beyond Djokovic with his record-breaking 21st Grand Slam title in Melbourne with a five-set victory over Daniil Medvedev in the final.

Djokovic was unable to compete in Melbourne due to his vaccination status, deported amid an ugly saga after arriving in Melbourne expecting to be permitted to play.

The Serbian, who returned to the ATP Tour on Monday with a 6-3 6-3 win over Lorenzo Musetti at the Dubai Tennis Championships, was gracious in praising Nadal, who had a nagging foot injury dog him late last year.

"I think it was four, five months ago that he was on the crutches and now he's winning a slam. It's incredible," Djokovic told reporters after beating Musetti.

"I've got tons of respect for him. I don't want to take anything away from his victory, me not participating in the tournament regardless."

The Serbian was pressed on missing the Australian Open and added: "Of course, it wasn't a pleasant feeling for me leaving the country the way I did and watching the tournament from far away."

Djokovic will play either Karen Khachanov or Alex de Minaur in the second round in Dubai, while Nadal is competing at the Mexican Open, with a match against Denis Kudla on Tuesday.

World number one Novak Djokovic has praised Rafael Nadal for his "incredible" triumph by winning last month's Australian Open after his own deportation forced him to miss the event.

Nadal moved beyond Djokovic with his record-breaking 21st Grand Slam title in Melbourne with a five-set victory over Daniil Medvedev in the final.

Djokovic was unable to compete in Melbourne due to his vaccination status, deported amid an ugly saga after arriving in Melbourne expecting to be permitted to play.

The Serbian, who returned to the ATP Tour on Monday with a 6-3 6-3 win over Lorenzo Musetti at the Dubai Tennis Championships, was gracious in praising Nadal, who had a nagging foot injury dog him late last year.

"I think it was four, five months ago that he was on the crutches and now he's winning a slam. It's incredible," Djokovic told reporters after beating Musetti.

"I've got tons of respect for him. I don't want to take anything away from his victory, me not participating in the tournament regardless."

The Serbian was pressed on missing the Australian Open and added: "Of course, it wasn't a pleasant feeling for me leaving the country the way I did and watching the tournament from far away."

Djokovic will play either Karen Khachanov or Alex de Minaur in the second round in Dubai, while Nadal is competing at the Mexican Open, with a match against Denis Kudla on Tuesday.