Rafael Nadal declared his Abu Dhabi mission a success despite suffering a second consecutive defeat at the Mubadala Tennis Championship on Saturday.

After a hard-fought battle with Andy Murray on Friday served up a reminder of many a classic match between the pair, it was Denis Shapovalov who beat Nadal in his second comeback clash.

Since losing to Novak Djokovic in the French Open semi-finals in June, Nadal had played only two matches due to a worrying foot injury.

That has been a long-term problem and the 35-year-old Spaniard chose this week's event to test how it would stand up to match conditions.

Canadian Shapovalov beat his fellow left-hander 6-7 (4-7) 6-3 10-6, but Nadal has done enough in his two matches, and in a practice session with Andrey Rublev, to be persuaded his prospects for 2022 are looking up, with the Australian Open just a month away.

The 20-time grand slam champion said: "Maybe it was too tough to start after a long time."

But he was laughing as he said that, and added: "The goal is achieved: to be back on court. I've played two matches and played more or less four hours on court.

"I enjoyed it. Congrats to Denis today. I wish you all the very best for the next season, and I'm going to try to keep going with my road."

Nadal said he would return to the tournament in future years, as long as he remains fit and still on tour.

"If I'm still playing tennis, I am always super happy to be here playing," he said. "Hopefully I can keep coming during the next couple of years."

Shapovalov, 22, is one of the ATP Tour's most talented youngsters, striving to make a telling impact while the likes of Nadal, Novak Djokovic and Murray reach the twilight years of their careers.

He said of Saturday's win over Nadal: "Any time I get to go on court against a guy like Rafa is an honour for me.

"It's great to just see you back on the court and see you healthy. Hopefully you can grab a great season and keep going."

Rafael Nadal said it felt "special" to be back on court as the 20-time grand slam champion began his latest comeback with defeat to old foe Andy Murray in Abu Dhabi.

The Spaniard was beaten 6-3 7-5 by Murray at the Mubadala World Tennis Championship, an exhibition event that for the 35-year-old marks an important step towards a full ATP tour return.

Nadal is coming off a year disrupted by the foot injury that caused him to miss Wimbledon, the Olympics and the US Open, playing just one event after June.

With the Australian Open a month away, there is plenty of work for these two still to do, but this was a feast for the eyes as the multiple grand slam champions jostled hard for supremacy.

Murray is down at 134th in the ATP rankings and continues to battle his own body after hip and groin problems. However, eye-catching wins late in the season against the likes of Carlos Alcaraz, Hubert Hurkacz, Jannik Sinner and Frances Tiafoe have suggested there might be good times ahead for him in the new year.

Here the Scot broke Nadal's serve to 15 in the sixth game of the first set to seize the initiative. Nadal appeared to be finding a familiar rhythm in the second set, hitting some tremendous clean winners, and at 0-30 down at 4-4 he serve-volleyed twice in succession to get out of trouble.

A contentious line call gave Murray two break points at 5-5, and although Nadal saved one, he fired long at the end of a super rally on the next point. Murray closed out the contest on his second match point, with Nadal flinging a full-throttle backhand long, 

"It's been special to be back in competition," Nadal said in an on-court interview. "At the same time, it's been a while since we played against each other. I'm super happy to see Andy playing at this great level after all the things he went through.

"For me, as a comeback it was not a bad match for me. It's been a long time since I was out on court in a professional match so I've got positive feelings."

These wily old rivals had met 24 times previously at competitive tour level, all of those encounters coming between 2007 and 2016 with Nadal leading 17-7 in the head-to-head.

Nadal won the ATP's comeback player of the year award way back in 2013, and he finds himself looking to prove himself again in 2022, locked together on 20 slams with Novak Djokovic and Roger Federer.

Murray, who has won three slams but also been a runner-up eight times in the majors, said: "It's great to be back on the court, able to play at a high level again after a very long time. Me and Rafa have played so many tough matches, but we've not played for five or six years.

"That shows both of us have gone through lots of injury troubles and issues, and it's great to just have the opportunity to be on the court with him again.

"Certainly when I was younger I wasn't appreciating it as much as I do now. It's great to be back on the court, I'm so happy that Rafa's back, and I look forward to the next few years."

Murray will play Andrey Rublev for the title on Saturday, while Nadal features again too, taking on Denis Shapovalov in a third-place match.

Spanish tennis great Manolo Santana, a four-time grand slam winner, has died at the age of 83.

Santana won the US Open, Wimbledon and the French Open twice during the 1960s, during which time he spent a period as world number one.

He also won the men's singles tennis tournament at the 1968 Olympics, though it was not recognised as a medal event at the time, while also winning the French Open men's doubles in 1963 and the Davis Cup with Spain on three occasions.

Santana retired in 1977 and in more recent times was regularly seen watching countryman Nadal – the only Spaniard to have won more grand slam titles – from the stands.

Nadal led the tributes to Santana on Saturday with an emotional post on social media.

"I have just received the terrible news of the death of our great Manolo Santana," he wrote on his official Instagram account.

"As I have said many times in the past: thank you very much for what you did for our country and for leading the way for so many. 

"You have always been a reference, a friend and a person close to everyone.

"We will miss you Manolo; you will always be unique and special. Greetings to your family and a lot of strength at this time. We will never forget you."

Rafael Nadal is set to start his 2022 season at the Melbourne ATP 250 ahead of the Australian Open.

Nadal this week appeared on the entry list for the first grand slam of the year, which begins on January 17.

The Spaniard has not featured on the ATP Tour since August, when he lost against Lloyd Harris at the Citi Open in Washington D.C.

But Nadal is going to be back into the swing of things in the next month. The Melbourne 250 starts on January 4 and will serve as a warm-up for the Australian Open.

Gael Monfils is headlining the ATP 250 event in Adelaide during the same week, while Novak Djokovic – whose participation at the Australian Open is as of yet unclear, although he is also listed for entry – is set to lead Serbia at the ATP Cup in Sydney. 

Djokovic has not yet revealed his COVID-19 vaccination status. If he is not fully vaccinated, the 34-year-old may not be able to compete in Melbourne, barring a medical exemption.

Nadal has dropped down to world number six after another injury-hit season, in which he won two titles, triumphing in Barcelona and Rome.

He has only won the Australian Open once, in 2009, but has since been beaten four times in the final, in 2012, 2014, 2017 and 2019.

Since the start of the 2020 season, Nadal has played in four finals, winning them all, including last year's delayed French Open.

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.

Rafael Nadal conceded that Novak Djokovic will likely end his career with the most grand slam singles titles in men's tennis history, ahead of the Spaniard and Roger Federer.

The so-called 'Big Three' of tennis have long dominated the ATP Tour, with all three sitting on 20 major titles after Djokovic collected three from a possible four in 2021.

Djokovic, who secured a year-end number one ranking for a record seventh time, would have completed a clean sweep if it were not for Daniil Medvedev in the US Open final.  

Nadal, by contrast, missed large parts of the season with a foot injury, while Federer was similarly ruled out for a substantial period after requiring a third knee operation in the space of 18 months.

Nadal could make a return for the Australian Open in January, an event that the world number one may miss due to a vaccine mandate, but he still expects Djokovic to hold the record for major titles when the trio has retired.

"Djokovic is best positioned to be the [men's] player with the most grand slams," Nadal said to Movistar.

"You don't have to fool yourself – Federer is where he is and I am where I am. However, Djokovic is playing well and in a good moment.

"That is the reality, and you can't ignore it. We don't know what is going to happen in nine months' time, but he is the favourite right now."

Nadal triumphed at Roland Garros in 2020 but has only appeared at two majors since, while Federer – who hopes to return to tour-level action in 2022 – last collected a grand slam title at the Australian Open in 2018.

Nadal is glad that the likes of Stefanos Tsitsipas, Alexander Zverev and Medvedev, who only dropped one set across the entire tournament as he denied Djokovic the perfect year, are taking over.

"They are no longer the Next Gen, we do not have to make it eternal," Nadal said of the new 'Big Three' in tennis.

"Players like Medvedev, Zverev or Tsitsipas have already passed that stage of the Next Gen, they are the current generation, the present."

Rafael Nadal intends to make his Tour comeback next month and plans to play at the 2022 Australian Open.

The 20-time major champion has not played since a defeat to Lloyd Harris at the Citi Open in August.

The 35-year-old, who withdrew from Wimbledon and the Tokyo Olympics after losing to Novak Djokovic in the French Open semi-finals, also pulled out of the US Open due to a recurring foot injury.

Nadal has spent time training in Mallorca this month following treatment in Barcelona and said he was not sure when he would make his return to action.

Speaking at a sponsor event in Paris, Nadal said he hopes to play at the World Tennis Championship next month before a possible tilt at the first grand slam of next year, an event he has won just once back in 2009.

"My plan is to play Abu Dhabi in December and then in a tournament before Australia and then the Australian Open. That's my goal," Nadal said. "We're working hard to make it happen.

"The injury in my foot still needs to get a little better, but I'm already training almost an hour and a half a day so that's positive. Some days are better than others, but I'm starting to have a lot more positive days than negative ones.

"So, I'm on the right track. I'm training, I'm feeling better. I'm back on the court."

World number eight Casper Ruud and world number 13 Denis Shapovalov are two of the big names from the ATP Tour to have confirmed they will play in Abu Dhabi in the event that runs from December 16-18.

Women's Olympic gold medallist Belinda Bencic and surprise US Open champion Emma Raducanu have also signed up to make their tournament debuts.

The Australian Open, won this year by Novak Djokovic, is due to start on January 17.

Daniil Medvedev says it is "logical" that the age of Rafael Nadal, Roger Federer and Novak Djokovic has made it easier to play against the 'Big Three' of men's tennis.

For so long, that triumvirate has dominated the ATP Tour, with Djokovic winning three of the four grand slams on offer in 2021 – denied only a clean sweep by Medvedev at the US Open.

Nadal has struggled with a foot injury for most of the year, though, a problem that saw him miss out on Wimbledon, the Tokyo Olympics and Flushing Meadows after losing to Djokovic in the French Open semi-finals.

Federer, similarly, has missed large parts of the 2021 term after requiring a third operation on his right knee in the space of 18 months.

Medvedev accepted Djokovic had proven "he can beat everyone" in another sensational season, but – while heaping praise on a golden generation of tennis – the Russian said it is natural that time has caught up with all three.

"It would be silly to deny it…[it's] logical," he told reporters about the prospect of younger players replacing the greats at the top of the men's game.

"It is something natural. It is not something that I decide. It is evidence. They get old and now it is easier to play against them."

Medvedev only dropped one set across the entire tournament en route to securing a maiden slam at the US Open.

However, Medvedev was reticent to say the shift in power has taken place.

"I do not dare to speak of a generational change in tennis," Medvedev said.

"It is the best generation in the history of tennis.

"Nobody can come close to the results they have achieved.

"We all want to defeat that troika. And they don't want to lose either."

Medvedev then focused on his own progress, having pulled out of the Kremlin Cup citing injury problems from an early exit in Indian Wells.

"I want to win more Grand Slams," he continued. "I also want to be number one and be at the top of tennis for many years. But you can't win every tournament, it's impossible."

Twenty-time grand slam winner Rafael Nadal has refused to put a timeline on his comeback to competitive tennis and will only return when he is in "good condition".

Nadal has not played since early August when he lost to Lloyd Harris in the third round at the Citi Open, before withdrawing from the US Open due to a recurring foot injury.

The 35-year-old Spaniard had in June pulled out of Wimbledon and the Tokyo Olympics shortly after losing to Novak Djokovic in the French Open semi-finals, saying he was "listening to my body".

Nadal, who will not return this season, has been seen training in Mallorca after last month receiving treatment in Barcelona, offering hope of a return.

"I want to recover from this injury in good condition," Nadal told a news conference.

"I don't know when I will play again, I work a lot every day, I follow a specific plan with a marked roadmap and with very clear objectives."

The next major on the calendar is the 2022 Australian Open to be played in Melbourne in January although Nadal would not commit to participating.

"I will not say what those objectives are, because there are always things that I can't control 100 per cent, but inside my head I'm clear on what my objectives are and I trust that things will follow a positive course," he said.

"Not everything depends on me, but I am confident that my daily efforts will pay off and allow me to return soon."

Jon Rahm hopes to "transcend golf and become an idol", echoing the achievements of tennis star and compatriot Rafael Nadal.

Rahm, who lives in America, has been amazed by his level of fame back home in Spain, where he is preparing for the Iberian swing of the European Tour.

This week he will seek to claim a third consecutive Open de Espana title in Madrid, with the world number one having risen to a level where he is instantly recognisable on the streets of the capital.

"It is difficult to be an idol when I do not live here," said the U.S. Open champion. "I see it when I spend a certain amount of time here, when you reach a certain level and even more so today with social media, because you reach more people and you realise the impact that you have.

"It only took 30 seconds for someone to recognise me when I left the hotel. If you were to tell me that this will happen to me in Bilbao, my hometown, I could understand it.

"I imagine that Madrid is full of sportsmen, but to be recognised so quickly is something I was not aware of.

"My parents and my friends tell me, but until I see it for my myself I do not realise it too much. Hopefully, I will transcend golf and become an idol."

Asked about an esteemed selection of his fellow countrymen – namely Nadal, former NBA stalwart Pau Gasol, and two-time Formula One world champion Fernando Alonso – and the level of fame they have achieved, Rahm chose the 20-time grand slam winner as the one he would most like to emulate.

"You have named three sportsmen that have been my idols, three that I have seen competing, especially Rafa, who I already said is an idol and a model for me to learn from," said Rahm.

"I don't know if I will reach the level in golf that he reached in tennis because nowadays it's very competitive, but if I can be an idol for any Spanish kid, that would be welcome."

Novak Djokovic may have missed out on completing a Grand Slam in 2021 but his "crazy" achievements across the year have received praise from Roger Federer. 

Djokovic fell at the final hurdle in his bid to secure a clean sweep of the majors, losing in straight sets to Daniil Medvedev at the US Open.

The Serbian's defeat at Flushing Meadows means Rod Laver remains the last man to claim all four majors in one year, the Australian doing so for a second time in 1969 having previously managed the feat seven years earlier. 

Neither Federer, who missed out on playing in New York due to knee surgery, nor Rafael Nadal have done so in their stellar careers, though the Swiss is certain a calendar slam is still possible.

"Will it actually happen again, that a player will win all four grand slams in their career? I think so," Federer said.

"We have seen with Rafael Nadal, Novak Djokovic and of course with me as well that this is possible.  

"It is extremely hard, of course. But I have the feeling, more than ever, that we can dominate on all kinds of ground where we have all found our own game.  

"The problem is mentally and physically it is not getting any easier for any of us. So, what Novak was able to accomplish this year has to be highly rated. It was absolute top class. It was crazy." 

Federer confirmed he would be out for "many months" when revealing he would require a third procedure on his problematic right knee in the space of 18 months.

However, the 40-year-old – who sits tied with long-time rivals Djokovic and Nadal on 20 grand slam singles titles – has suffered no setbacks in his recovery so far, putting him on course for a competitive return to the ATP Tour in the 2022 season.

"I'm feeling actually really good, considering, you know, that things are not as I hoped they would be, but I'm recovering well and the rehab is going really good, I must say," Federer said. 

"I've had no setbacks. You know, every day is a better day. I'm feeling strong and excited for what's to come."

Federer has not played since losing in straight sets to Hubert Hurkacz in the Wimbledon quarter-finals back in July.

Rafael Nadal posed with crutches and an apparently bandaged foot as the injured former US Open champion revealed on Saturday he has undergone treatment in Barcelona.

The 20-time grand slam winner announced in August that his season was over, as he battles a problem that has troubled him since 2005 and has recently hindered his tournament preparation.

Nadal felt he was unable to do himself justice, and since a French Open semi-final defeat to Novak Djokovic in June, he has played just two more matches, reaching the last 16 at the Citi Open in Washington.

He wrote on Instagram on Saturday: "Hello everyone, I have not communicated with you through the networks for some time.

"I can tell you that I was in Barcelona with my team and the medical team, to receive a treatment on my foot that will mean I take a few days of rest and a few weeks off court.

"I am back home and in the process of recovery. Thank you all for your support!"

The social media post shows Mallorca native Nadal giving a thumbs-up gesture to the camera, but it also gives an indication of the extent of his problem.

He stands with only his right foot on the ground, the left raised off the floor in what looks like an effort to protect it, as he props himself up with a pair of crutches in his left hand.

Nadal has won the US Open four times, most recently in 2019, but has been one of a number of star-name absentees from this year's tournament in New York.

The 35-year-old has 13 French Open wins among his haul of majors, and stands level on 20 grand slams with Roger Federer and Novak Djokovic.

Djokovic has an opportunity to go top of the all-time men's list on Sunday when he faces Daniil Medvedev in the men's final at Flushing Meadows.

As Nadal suffers, so does his great rival Federer. A Nadal return to action in 2022 appears a more likely prospect than another Federer comeback.

Federer has cast some doubt on whether he will play again, as the 40-year-old battles knee trouble. The Swiss said last month he would be "on crutches for many weeks" after surgery, declaring he wanted to give himself "a glimmer of hope" of featuring again on tour.

Carlos Alcaraz was lost for words after making history in the Spanish teenager's shock five-set upset of world number three Stefanos Tsitsipas at the US Open.

Alcaraz – rated by many as Spain's best young male player since 20-time grand slam champion Rafael Nadal first emerged – sent Tsitsipas packing 6-3 4-6 7-6 (7-2) 0-6 7-6 (7-5) in the third round on Friday.

The 18-year-old Alcaraz became the youngest player to reach the last 16 of the US Open since Americans Michael Chang and Pete Sampras in 1989.

Alcaraz also became the youngest man to beat a top-three opponent at the tournament since the ATP introduced its world ranking system in 1973.

After more than four hours on Arthur Ashe Stadium, Alcaraz told reporters: "I have not words to explain how I feeling right now.

"I just don't know what happened out there in the court. I can't believe that I beat Stefanos Tsitsipas in an epic match.

"For me it's a dream come true."

Amid comparisons with countryman Nadal, Alcaraz added: "Honestly I don't copy any style of a players. I just play my game.

"But if I have to say one player that is similar my game, I think it's [Roger] Federer. I think similar as mine game, trying to be aggressive all the time. I think it's a good similar for me."

After his US Open campaign came to a surprise end, third seed Tsitsipas tipped Alcaraz for future success.

"A hundred percent," Tsitsipas replied when asked if he had a sense of Alcaraz's potential. "I said he can be a contender for Grand Slam titles. He has the game to be there."

"I've never seen someone hit the ball so hard," French Open runner-up Tsitsipas added. "Took time to adjust. Took time to kind of develop my game around his game style.

"It's one of these matches and one of these feelings where, you know, you pick up at some point of the match, you feel like you're in control, and it doesn't really go your way at the end.

"It's kind of bitter, I would say, especially after such an incredible first set by my side, dominating, being just so aggressive, not dwelling on the past. It was a great first set.

"I don't know. I felt like he played the fifth one completely -- the way he played the first set basically, careless, going for every single shot. I have never seen someone play such a good fifth set, honestly."

Novak Djokovic welcomed the ongoing 'GOAT' discussion alongside Rafael Nadal and Roger Federer after the world number one took another step towards an historic grand slam title at the US Open.

Djokovic, Nadal and Federer share the most men's slams in history with 20 but the former has the chance to break the record at Flushing Meadows, where the top seed dismantled unheralded Dutchman Tallon Griekspoor 6-2 6-3 6-2 in the second round on Thursday.

Serb star Djokovic is also bidding to become just the third man to complete a calendar Grand Slam and the first to sweep all four majors in a year since Rod Laver in 1969.

It is widely debated who is the greatest player of all time among Djokovic, Nadal and Federer – the latter two are both absent from this year's US Open due to injury.

After reaching the third round in New York, Djokovic was asked who the better player on a neutral surface is, given Nadal's clay-court dominance and Federer's grass-court expertise.

"It's difficult to say who is better. Three of us, we're all so different. We have different styles," Djokovic said during his post-match news conference.

"We have different trajectories or journeys to where we are at this moment. We all had tremendous success, some more particularly on one surface, some the other surface.

"We do complement each other. I think the rivalry between the big three, so to say, it's phenomenal for our sport.

"So the more traction, the more conversation there is around the three of us, the GOAT discussion, et cetera, the better in general for our sport. I hope people still keep on talking about it."

Djokovic added: "I think actually one of the best I think images that I've ever seen from tennis is them [Nadal and Federer] playing on a half-grass, half-clay court.

"I thought that was fantastic. Whoever came up with the idea was genius. As a tennis fan, I enjoyed that very much."

Djokovic hit 33 winners, fired down 13 aces and broke six times throughout a dominant performance against Griekspoor under the Arthur Ashe Stadium lights.

The 34-year-old also improved to 53-1 against non-top 100 opponents at majors, while he is now 13-0 against them at the US Open.

Kei Nishikori awaits Djokovic, who owns a 17-2 head-to-head record against the 2014 US Open runner-up.

"We played many times. I have very good score against him," Djokovic said of Nishikori. "I lost I think last time here in New York in semis in 2014. Historically I think his most successful grand slam is here. He's one of the quickest and most-talented players that I've seen in my lifetime, in my career.

"I think it's important for me to serve well and try to take off the pace a little bit because he likes the pace. He likes to hit the ball early, protect the line. But I know his game well. We played in Olympic Games. I know what's expecting me. I look forward to a good challenge."

Novak Djokovic has history in his sights as he begins his US Open quest; after three grand slam titles in 2021, a fourth beckons at Flushing Meadows.

Rod Laver was the last man to achieve a sweep of the Australian Open, French Open, Wimbledon and US Open singles in the same year, all the way back in 1969.

Steffi Graf won all four on the women's side in 1988, and it seemed a knock-in that Serena Williams would do likewise in 2015 when she headed to the US Open with three majors already bagged.

But winning any title at that level is never easy, and Williams famously came unstuck when she faced Roberta Vinci in the semi-finals.

Djokovic will be mindful that what seems an inevitability to the outside world remains very much still only a possibility. After his US Open tribulations last year, and a recent jolt at the Olympics, he will know anything can happen.

Here, Stats Perform looks at how Djokovic's situation at Flushing Meadows carries most of the hallmarks of Serena's own position as she headed into the tournament six years ago.

IT'S ALL ABOUT THE SLAMS

It was not always this way, but Djokovic has reached the point in his career when he can choose targets, decide which records he wants to break, and throw everything at those goals.

At the start of the year in Australia, he savoured triumphing at Melbourne Park for a ninth time and pointed to how Roger Federer, Rafael Nadal, Williams and Margaret Court had achieved so much.

"They've made history already," Djokovic said. "They made a tremendous mark in our sport. I'm trying to build that and develop that myself in a very unique, authentic way that is suitable to me.

"Whether I think about winning more slams and breaking records, of course. Of course, I do. And most of my attention and my energy from this day forward, until I retire from tennis, is going to be directed in majors, trying to win more major trophies."

It had very clear echoes of Williams in 2015, also in Australia, setting out her own ambitions for the year and specifically targeting the French Open and Wimbledon.

"Those are the two I really have my eye on, because I would like to do better at those. And I know I can do better," she said.

Williams set her heart and mind on that twin challenge and won both.

"I definitely am not going to play as much this year, and I'm just going to go for everything when I do play," said Williams.

BUILDING UP

When Williams reached New York in August 2015, she had delivered a 48-2 win-loss record for the season, landing each of the majors alongside the Miami Open and the Western and Southern Open. Petra Kvitova in Madrid and Belinda Bencic in Toronto had been the only two players to get the better of the 33-year-old Williams.

Djokovic has a 38-5 record for the year, albeit it has the feel of a more dominant year for the 34-year-old Serbian. Two of those losses came at the Olympics, in a semi-final and bronze medal match, and the other three came in his first three events on clay, losing to Dan Evans in Monte Carlo, Aslan Karatsev in Belgrade and Nadal in Rome.

When it mattered on clay, though, Djokovic majorly turned up in Paris, gutsily beating Lorenzo Musetti from two sets down in the fourth round, ending Nadal's streak of four Roland Garros titles by sinking the Spaniard in the semi-finals, and then leaving Stefanos Tsitsipas devastated in the final, with another fightback after dropping the first two sets.

Wimbledon followed, and Djokovic by then was openly targeting a Golden Slam – each major and the Olympic title.

Much like with Williams and her loss to Bencic in the Toronto semi-finals six years ago, however, Djokovic showed he was fallible as history beckoned. From a set up, he lost to Alexander Zverev at Tokyo 2020, a blow that was compounded by missing out on bronze when Pablo Carreno Busta sprang another shock.

HISTORY CAN BE A FIERCE OPPONENT

Williams and Djokovic have won non-calendar Grand Slams before, winning four in succession spanning two seasons.

Williams first achieved that from the French Open in 2002 to the Australian Open in 2003, and in 2015 she was aiming for five slams in a row at the US Open, having begun her dominant streak at her home grand slam the previous year.

She won the first set of the semi-final against Vinci, the world number 43, but was then second best to the Italian, with Williams saying her conqueror "played literally out of her mind".

But the disappointment was stark, underlined by Williams' terse response to the question of how disappointed she felt by the result.

"I don't want to talk about how disappointing it is for me," she said. "If you have any other questions, I'm open for that."

The four-in-a-row feat has only been performed once by Djokovic, from Wimbledon in 2015 to the French Open in 2016. Had he not been disqualified during the US Open last year for carelessly hitting a ball that struck a line judge, he would most likely currently be on a four-slam streak.

Those who win the first three slams of the year often do complete the set, but there are four instances of singles players falling one short by failing in the year's last major.

Before Williams, the most recent case was Martina Navratilova in 1984, when the imperious left-hander headed to the Australian Open – then played at the end of the year rather than the start – in pursuit of the Grand Slam. She lost to Helena Sukova in the semi-finals, and said: "If I'd have won, I'd have done it all. If I lost I had to start from scratch. Both are hard to cope with."

Navratilova had won 74 consecutive matches until that loss and ended the season with a 78-2 record.

In the men's game, Jack Crawford (1933) and Lew Hoad (1956) also fell short, both losing in finals of the US National Championships, the tournament that became the US Open. Don Budge (1938) and Laver (1962 and 1969) are the only men to have won a calendar Grand Slam in singles.

The weight of expectation is immense for Djokovic as he pursues what would be his crowning glory, not only sealing the Grand Slam but reaching 21 majors, one ahead of Nadal and Federer and into the outright lead in the men's game. The prospect cannot be ignored, and it will be a heavy burden to carry over the coming fortnight.

As Djokovic said on Friday: "I would be lying if I said that’s not something that I’m thinking about or that my attention is not going that way.

"I’m very motivated to play my best tennis. But I have to hit one ball at a time, as they say, try to be in the moment, have a guiding star in a way, a dream to win a slam here."