Novak Djokovic led the ATP Tour's birthday message to Roger Federer, as the Swiss star celebrated his 40th on Sunday.

Federer, ranked ninth in the world, made his professional debut in 1998. He has gone on to win 20 grand slam titles, a feat matched by only Rafael Nadal and Djokovic, who tied his rivals with his triumph at Wimbledon in July.

His first grand slam title arrived at Wimbledon in 2003, when Federer was aged just 21. In 2004, 2006 and 2007, he won three out of the four majors on offer.

Federer has six Australian Open titles, eight Wimbledon triumphs, five US Open wins and one French Open success to his name, while he has also won six ATP Tour Finals.

Djokovic and Federer have met 50 times on the ATP circuit, with the Serbian shading their head-to-head record with 27 wins – their most recent encounter coming in the semi-finals of the 2020 Australian Open.

Yet it was he who led the tributes to a true great.

"Hey Roger, happy 40th birthday – 40th, wow, what a milestone! You still keep on inspiring and thriving on the court, off the court, inspiring all of us," Djokovic said in a video posted to the ATP Tour's official Twitter account.

"It's been a huge honour to share the tennis court and the tennis circuit with you in the last 15 years.

"Hopefully you can still keep on playing. The sport needs you, of course, and thanks for everything you have done and thanks for showing us that even at that age we can play at a very high level.

"All the best, I wish you health and love and happiness with your close ones and thanks again for everything."

Kei Nishikori, who has beaten Federer three times and suffered eight defeats to the Swiss, was next up.

"Roger, happy 40th birthday!" Nishikori said.

"You are still my idol, I always looked up to you and I hope we can play a couple more times and I hope you can still keep going and win grand slams."

World number 15 Felix Auger Aliassime shares his birthday with Federer, though the Canadian is some 19 years junior.

"Hey Roger, the big 40, while I'm just turning 21," he said. "It's amazing for the sport that I'm playing and you're still playing at the same time.

"I hope I'll still be playing when I'm 40 as well. Thank you for everything you've been doing for tennis, it's so good to still have you around, I hope you have a great birthday."

Roger Federer has withdrawn from both the Canadian Open and Cincinnati Masters as he continues to recover from a knee injury.

After undergoing two operations on his right knee last year, Federer has competed in just five events so far in 2021.

Most recently, the 20-time Grand Slam champion reached the Wimbledon quarter-finals, before losing in straight sets to an inspired Hubert Hurkacz.

The 39-year-old then missed the Olympic Games due to what he described as a "setback" with his knee.

He was scheduled to appear in Toronto and Cincinnati – where he is a seven-time winner – and step up his preparation ahead of the US Open.

However, his participation in the final Slam of the year is now uncertain after he pulled out of this month's ATP Masters 1000 tournaments.

Another player who will not be competing in Toronto is Alexander Zverev; the Olympic gold medallist also opting to withdraw.

In a statement, he said: "Due to the intense past couple of weeks and my incredible experience at the Olympics, I need to recover so that I can hopefully be at my best for the remainder of the U.S. summer swing.

"It was a difficult decision for me as I have had great memories from Canada and I can't wait to be back next year!"

Novak Djokovic has leapt from one bubble into another as he attempts to become the first man in tennis history to win all four grand slams and Olympic gold in the same year.

The only men to have won each of the singles majors across their careers, plus Olympic gold, are Andre Agassi and Rafael Nadal, and now Djokovic aims to move to the brink of winning all five in his remarkable 2021 season.

Fresh from dominating at Wimbledon, and with the Australian and French Open titles already in the bag, Djokovic heads into the Tokyo Games as a red-hot favourite, seeking to set himself up to complete a historic campaign at the US Open.

Naomi Osaka will enter the Games with almost as much expectation behind her too, the reigning US Open and Australian Open champion eyeing glory for hosts Japan.

But tennis has thrown up a host of shock results in its short Olympic history. Here, Stats Perform looks at the sport's place in the Games.

WHO'S IN, WHO'S OUT, AND WHAT DOES ALL THIS MEAN?

Serena Williams, Roger Federer and Rafael Nadal have all opted out of the Olympics.

Williams made her mind up prior to suffering a leg injury at Wimbledon, although she is already a member of the career Golden Slam club.

Federer reached his decision after revealing he also suffered a physical setback at the All England Club, and Nadal elected to take a two-month break after relinquishing his French Open title.

Don't expect to see them again at the Olympics, given Williams and Federer will be pushing 43 by Paris 2024, and Nadal will be 38. Federer won a doubles gold with Stan Wawrinka in 2008, but his singles peak was the silver medal he earned in 2012, Andy Murray crushing Swiss hopes in the final at Wimbledon.

Dominic Thiem, Bianca Andreescu, Nick Kyrgios, Simona Halep, Angelique Kerber, Victoria Azarenka and Denis Shapovalov are among other confirmed absentees, with fitness issues a factor for some, less so for others.

The COVID-19 crisis is a mitigating factor in why so many stars are staying away, and directly responsible in the case of some players, such as Britain's Johanna Konta and Dan Evans, who both tested positive recently.

But tennis was only fully restored to the Olympic programme in 1988, after being dropped post 1924, and if players are seen to be favouring the grand slams over the Games, that is not such a great look for the sport.

At a time when the International Olympic Committee has shown it is willing to shake up the sports on its programme, tennis could perhaps do with a headline-making Tokyo 2020.

Murray, the two-time defending men's champion, will target an improbable hat-trick. A hat-trick for the injury-hit former world number one would be a sensation, and Osaka landing gold in the women's tournament would surely be one of the great moments of the Games.

DJOKOVIC FOLLOWING IN THE FOOTSTEPS OF GRAF

When Steffi Graf beat Gabriela Sabatini in the women's singles final at Seoul, it completed what we know now as the calendar 'Golden Slam'. She had already won the Australian Open, French Open, Wimbledon and the US Open, and the feat of the then 19-year-old West German has yet to be repeated.

Now Djokovic is three-fifths of the way to a similar clean sweep of the majors and the Olympics, with the US Open getting under way on August 30 in New York.

He teetered on not going to Tokyo, and perhaps he is to some extent endangering his chances at Flushing Meadows by spending more time travelling and enduring bubble life, while others rest up.

But Djokovic is a fiercely proud Serbian and could not resist a great chance of winning gold for his country. He landed bronze at the 2008 Games in Beijing but in 2012 he lost to Juan Martin del Potro in the bronze-medal match, and a cruel draw at Rio four years later saw him assigned Del Potro in the first round.

Top seed Djokovic bowed out in two tie-breaks to the powerful Argentinian, describing the outcome as "one of the toughest losses in my career".

There is no danger of a hat-trick of defeats to Del Potro, which may help Djokovic. Del Potro has been battling for two years to get back to fitness, undergoing four rounds of right knee surgery in a bid to get back on tour.

RAISING THE BAR AT THE OLYMPICS

How the Olympic village functions in Tokyo will be distinctly different to at previous Games, given the pandemic restrictions in place that could be a real buzzkill.

But in the past there have been countless cases of athletes becoming inspired by their surroundings and going on to perform above their usual level.

It can be a party village, and it can also be an eyebrow-raising experience as global superstars rub shoulders with competitors who might struggle for recognition in their home towns. More than anything, the shared team experience, fighting for a collective cause, can make a middling athlete believe they can be great.

Monica Puig was a massive tennis outsider in 2016 but the then world number 34 won the women's singles, stunning Angelique Kerber in the final after beating Petra Kvitova and Garbine Muguruza en route. That gave Puerto Rico their first ever Olympic gold medal.

In 1992, a tournament that featured the likes of Pete Sampras, Jim Courier, Stefan Edberg and Boris Becker finished with a staggering final match-up of Marc Rosset versus Jordi Arrese, who in his home city of Barcelona was edged out 8-6 in the fifth set by the Swiss world number 43. Nobody would have predicted that head to head for gold.

Similarly, at Athens 2004, Nicolas Massu beat Mardy Fish in the gold medal match of a tournament that featured Federer, Andy Roddick, Carlos Moya and Tim Henman.

In the 1996 Atlanta Games, Lindsay Davenport, who had just turned 20, took inspiration from being the daughter of an Olympian, with dad Wink having played volleyball for the United States at Mexico City in 1968.

Davenport was beginning to make an impact on the WTA Tour but was only the ninth seed at the Olympics, yet she swept through the rounds before sinking Arantxa Sanchez Vicario 7-6 (10-8) 6-2 in the final.

"It's like one of those things I look back on and I'm like, 'Was that me?'," Davenport told The Tennis Podcast last year.

"It doesn't seem like it was real. I'd made the transition to the pro tour pretty well, but I liked hanging out between eight and 16 in the rankings. I was very insecure, unsure of what could I do. I liked doing well but I wasn't sure I wanted to do too well because it seemed really overwhelming to be one of those top players.

"Here I go at 20 years old to Atlanta for two or three weeks, in a setting that seemed so comfortable. Look at all these athletes, you have all different shapes and sizes, you have players that are really working hard but have so much in common and you get to hang out with them, breakfast, lunch, dinner in the village."

Davenport was a future world number one and three-time grand slam singles champion, but at this point in her career being an American at an Olympics in the United States was just a thrill.

"You're sharing this with your team-mates who are some of my best friends in Mary Joe Fernandez, Monica Seles. It was the best time ever," she said.

"By the time the tournament actually started we were like, 'Yeah, I'll go play my match and then we'll go back to the village and we'll hang out', and everything went so fast in those few weeks.

"And there I was left standing, winning at the end because I was so incredibly happy and excited with everything that was going on. I kind of forgot what was my job.

"When it became a reality of even just making the team in '96, it was so huge also for my family with having a second generation Olympian."

Roger Federer is in the draw for the US Open, but it remains unclear whether he will be fit to take part in the final grand slam of the year.

The United States Tennis Association confirmed on Wednesday that Federer was one of six former men's champions to receive direct entry into the draw.

Federer this month withdrew from the Olympic Games, citing a setback with his knee, on which he had two surgeries in 2020.

The Swiss, though, expressed his desire to return the tour, with Flushing Meadows providing his last chance to add to his tally of 20 major titles in 2021.

A five-time winner in New York, Federer has not reached the final at the US Open since 2015.

In the women's singles draw, Naomi Osaka and Serena Williams have each received direct entries into the draw.

Reigning champion Osaka missed Wimbledon having withdrawn from the French Open after the first round to protect her well-being amid a fallout following her decision to not attend post-match media conferences.

Williams is still awaiting a record-tying 24th grand slam title, the 39-year-old forced to retire from her first-round match at Wimbledon because of an injury to her right leg.

Roger Federer's body has been saying no for the past two years, but Pat Cash is hopeful the 39-year-old will return for another run on the ATP Tour.

After suffering a setback to his longstanding knee injury during Wimbledon, the 20-time grand slam champion has this week withdrawn from the Tokyo Olympics.

Despite being without much match practice – playing just four tournaments before Wimbledon after coming back from two knee surgeries - Federer was able to make the quarter-finals at All England Club.

However, he suffered a demoralising loss to Hubert Hurkacz in straight sets in the last eight that promoted a fresh round of speculation over his future in the game.

Cash, who won Wimbledon in 1987, hopes Federer will be back despite his recent injury woe.

He told Stats Perform: "First of all, let's hope that Roger Federer will keep going. 

"I think he can, I think he just needs more matches and probably needs to make sure that he's able to last. 

"But your body starts saying no at some stage and it's been saying that for a couple of years now for him." 

Wimbledon winner Novak Djokovic is now level with Rafael Nadal and Federer on 20 slams.

Cash believes judging the Swiss star purely on grand slam titles is not a fair measure of his brilliance, pointing instead to his astonishing record totals of 58 major quarter-final berths and 46 semis.

"He has been the most consistent player that I think we've ever seen," Cash said. "He may not end up with as many grand slams but his consistency is just outrageous.

"All the other players have lost early in grand slams, the Djokovics, the [Andy] Murrays, then the Nadals had lost early in grand slams, Roger just doesn't do it.

"Of all the titles that he's won, I think for me, his most impressive record is how many semi-finals or quarter-finals in grand slams in a row that he got to. It was something ridiculous for 10 or 11 years.

"He never failed at any grand slams and that is just absolutely mind blowing."

However long he tries to play on, Cash insists nothing can sour the memories of an extraordinary career from Federer.

Cash added: "Obviously, he raised the bar as far as the standard of tennis has gone. 

"The other players really had to catch up. Novak admitted it, he said, 'Without Roger there, leading the way, I wouldn't have been as good a player as I could have been'. 

"That's the gold standard of Roger Federer over his career and I'm not sure anybody will be as consistent as him in tennis history. 

"He's just phenomenal the way he plays, and we all of course enjoy the style, his movement. And he's a class act off the court as well."

Federer's status for the US Open, which begins on August 30, is unclear, with Djokovic looking to take the outright lead for major titles and achieve a historic calendar year Grand Slam.

Novak Djokovic will never have a better opportunity to achieve a historic calendar Grand Slam, which former Wimbledon champion Pat Cash says he should prioritise at all costs.

The Serbian won a sixth Wimbledon crown on Sunday, defeating Matteo Berrettini in four sets to achieve a final victory that moved him on to 20 grand slam titles.

With Australian Open and French Open successes also already achieved, glory at the US Open would see Djokovic become only the second men's player in Open Era history to win all four majors in the same year.

Cash thinks the stars have aligned for Djokovic, with issues for his main rivals leaving the 34-year-old primed to achieve the famous feat in 2021.

"The impossible dream really is there," Cash said to Stats Perform.

"For Novak this year it is a great opportunity for him to grab a bunch of grand slams and grab all the titles. 

"Certainly Wimbledon – without disrespecting the other players – was one of the weaker men's side draws that I've seen in many, many years. 

"And that's because we've got two of the big stars coming back from injuries – Andy Murray and Roger Federer – who played well but weren't at the peak of their career.

"The younger players are coming through but they're not quite there yet and Novak is just sitting on top of that mountain as the King of the Castle.

"His performance was exceptional at Wimbledon, there's no doubts about it. 

"The slightly younger players are coming through – Berrettini obviously in the final really pushed him to just about the limit.

"Stefanos Tsitsipas in the French Open final up two sets to love. So, these guys are close, very close, and it won't be long before they catch up with Novak and the others. 

"Obviously Rafa [Nadal] was out of this Wimbledon as well – I don't really think he's a serious threat on the grass anymore but he's still a great competitor. 

"So these guys are catching up, Rafa is still there, maybe Murray will come back and Federer will come back and be in better shape in the next year – but this is the year that Novak can really grab." 

Djokovic admitted this week he is still "50/50" over whether he will take part in the upcoming Tokyo Olympics due to coronavirus countermeasures in the Japanese capital. 

Federer withdrew from the tournament on Tuesday and Cash insists Tokyo will not be the priority over glory in New York for Djokovic.

Cash added: "It's the Olympics, okay – maybe he wants to do that, but certainly his goal is now to try and win all four grand slams in the calendar year.

"He has done four in a row, but he hasn't done them in the same year, which is very, very tough to do. 

"There is a reason why I think one person has done it in [men's] professional tennis – Rod Laver and it was in 1969, so it's not easy to do. 

"But I really do think it's in his sights and that has got to be his priority. 

"It's absolutely the absolute peak of our sport to win all four grand slams in one year." 

With Djokovic now level with Federer and Nadal on 20 majors, Cash would not be surprised to see him build a big lead.

He added: "Look, it's very hard to say. We have all been proven wrong by the numbers. 

"Though most of us thought that Rafa and Novak would get pretty close to Federer, we didn't really think they'd get there and beyond. 

"I think Novak is likely to win another couple, but you know, it takes us one little injury [to derail him] so it is very hard to say.

"John McEnroe said 25 or so [for Djokovic] and that could be well within his reach at the moment. 

"He's improving and that's frightening to think. He's won 19 grand slams before Wimbledon, and all of a sudden we've seen this guy come to the net, volley, add another string to his bow to become a better player. 

"Yeah, age 34 and he is improving – that's pretty frightening." 

Roger Federer has withdrawn from the Tokyo Olympics because of a setback to his knee suffered during the grass-court season.

Olympic gold in singles is one of the few honours missing from Federer's glittering resume, the 20-time grand slam champion having won silver in 2012, losing the gold medal match to Andy Murray less than a month after beating the Briton in the Wimbledon final.

While Murray will be in Tokyo to attempt to defend his title again having successfully retained it in 2016, Federer – a doubles gold medallist in 2008 – has elected not to make the trip to Japan.

"During the grass-court season, I unfortunately suffered a setback with my knee, and have accepted that I must withdraw from the Tokyo Olympic Games," Federer wrote in a statement on Twitter.

"I am greatly disappointed, as it has been an honour and highlight of my career each time I have represented Switzerland.

"I have already begun rehabilitation in the hopes of returning to the tour later this summer. I wish the entire Swiss team best of luck and I will be rooting hard from afar. As always, Hopp Schwiz!"

Federer missed most of the 2020 season due to persistent right knee problems that led him to undergo two surgeries.

The length of his recovery forced Federer to miss this year's Australian Open but he made his return to the tour in time for the French Open, reaching the fourth round before withdrawing to focus on the grass-court season.

Yet he was stunned by Felix Auger-Aliassime in the second round in Halle and was often unconvincing in progressing to the quarter-finals at Wimbledon, where his quest for a ninth title was ended by Hubert Hurkacz, the Pole becoming the first player to win a set 6-0 against Federer at the All England Club.

The 39-year-old's withdrawal makes him the latest tennis big name to pull out of the Tokyo Games. On the men's side, Rafael Nadal and Dominic Thiem decided against competing, while Serena Williams confirmed before her first-round retirement at Wimbledon that she had no plans to play at the Olympics.

World number one Novak Djokovic has said he is "50-50" on going for his first Olympic title. Having won all three majors so far this year, Djokovic is in prime position to become the first man to do the 'Golden Slam' in the same season. Steffi Graf achieved the feat in 1988, with a sweep of the majors followed by her victory at the Seoul Olympics.

Roger Federer is proud to play in an era of tennis which he labelled as "special" after Novak Djokovic clinched his 20th grand slam title.

Djokovic beat Matteo Berrettini 6-7 (4-7) 6-4 6-4 6-3 at Wimbledon on Sunday to seal his third major trophy of the season.

It is the world number one's sixth title at the All England Club, as he defended the crown he won in an epic final against Federer in 2019.

Djokovic is now level in the record books with Nadal and Federer, with all three of the greats on 20 grand slams each.

The Serbian will look to make that 21 at Flushing Meadows later this year, as he aims to become just the second player in the Open Era to complete a clean sweep of the men's slams in a single year, after Rod Laver in 1969.

In the post-match presentation, Djokovic hailed Nadal and Federer as inspirations, and the latter echoed that sentiment.

"Congrats Novak on your 20th major," Federer, now ranked eighth in the world, tweeted.

"I'm proud to have the opportunity to play in a special era of tennis champions. Wonderful performance, well done!"

Novak Djokovic lauded Rafael Nadal and Roger Federer as inspirations after he claimed his 20th grand slam title at Wimbledon.

Djokovic overcame Matteo Berrettini 6-7 (4-7) 6-4 6-4 6-3 on Sunday to win for the sixth time at the All England Club, matching Nadal and Federer's haul of slam titles in the process.

The world number one dropped just two sets throughout the tournament and will now head to the US Open looking to complete a calendar Grand Slam.

Asked what it meant to draw level with his two great rivals, Djokovic said: "It means none of us three will stop, that's what it means.

"I have to pay a great tribute to Rafa and Roger, they are legends of our sport, they are the two most important players I ever faced in my career. They are the reason that I'm where I am today, they've helped me realise what I need to do to get stronger mentally, physically, tactically.

"When I broke into the top 10 for the first time I lost for two, three years all of the big matches I played against these guys. Something shifted in 2010, the beginning of 2011 and the last 10 years has been an incredible journey that is not stopping here."

Djokovic, 34, will go to New York looking to overtake his rivals and create history as he looks to become only the second man to win the four majors in the same year.

"I could definitely envisage that happening. I'm hoping, I'm going to definitely give it a shot," he said.

"I'm in great form. Playing my best tennis at grand slams is my highest priority at this stage of my career. Let's keep it going."

Djokovic beat Federer in an all-time classic Wimbledon showdown in 2019, though did not quite find his best form against slam final debutant Berrettini.

"It was more than a battle, I would like to extend congratulations to Matteo," he said.

"I know it's not the best feeling losing in a final. I'm sure there's a great career ahead, I truly believe that. He's got an incredible game, very powerful - true Italian hammer! 

"Winning Wimbledon was always the biggest dream of mine as a kid, I've told this story many times but I have to repeat it to remind myself how special this is and not take it for granted. On the contrary, to enjoy and be aware that this is a huge honour and privilege.

"A seven-year-old boy in Serbia, constructing a Wimbledon trophy from materials I could find and today finding with a sixth Wimbledon [title] it's incredible, amazing."

Berrettini took a front-foot approach and struck an impressive 57 winners, but ultimately his unforced error count of 48-27 to Djokovic's tally – proved costly. Indeed, the Italian lost the match when he sent a weak backhand into the net.

"Unbelievable feelings, maybe too many to handle," Berrettini said.

"For sure he was better than me, he is a great champion. Well done Novak, once again, he is writing the history of this sport so he deserves all the credit.

"I'm really happy for my final, hopefully it's not going to be my last one here, my last one in a grand slam."

Roger Federer and Serena Williams have probably played their last Wimbledon matches, according to American great Pam Shriver.

Both came to the All England Club this year with hopes of landing another grand slam title, which for Federer would have been a ninth at Wimbledon and Serena an eighth on the famous grass courts.

However, they were met with disappointment, Williams "heartbroken" at having to retire from her first-round match against Aliaksandra Sasnovich due to an ankle injury.

Federer was thrashed 6-3 7-6 (7-4) 6-0 by Hubert Hurkacz in the men's quarter-finals and gave no assurances after the match that he would be back in 2022, or that he would play the Tokyo Olympics.

Both turn 40 later this year, Federer on August 8 and Williams on September 26, and their time at the top of tennis may now be over.

Shriver, a five-time doubles champion at Wimbledon who won 22 grand slams in all, was asked on The Tennis Podcast whether she expected Federer to play Wimbledon again.

"I thought so, before the tournament. I didn't think he would end Wimbledon without his family here," Shriver said.

"But after seeing him in the quarters and listening to his press conference, I think it's less than 50-50. I think we may have seen the last of him."

Due to restricted bubbles put in place because of COVID-19 issues, Federer has been unable to have wife Mirka and their four children with him in London.

Federer has won 20 grand slam singles titles, a record for the men's game that he shares with Rafael Nadal and which Novak Djokovic had the chance to match at this year's Wimbledon.

 Williams has 23 majors, one short of Margaret Court's women's record, but has been stuck on that total since 2017 and Shriver would be surprised to see her in the 2022 Wimbledon draw.

"I think it's even less likely that she'll be back," Shriver said. "It's really hard to stay fit for another year.

"She can't keep coming back from more and more injuries. I think it's definitely a turning point, pivot time, is the summer of 2021."

Roger Federer is unsure if he will make a return to Wimbledon, after the 20-time grand slam champion lost to Hubert Hurkacz in Wednesday's quarter-final.

Federer slipped to a 6-3 7-6 (7-4) 6-0 defeat on Centre Court, with the 39-year-old failing to take the chance to become the oldest male to reach the Wimbledon semi-finals in the Open Era.

Having taken the majority of 2020 out to recover from knee surgery, Federer had played in four tournaments prior to this year's grass-court grand slam, but failed to progress beyond the round of 16 in any of them.

He made it a step further at Wimbledon yet fell well short against world number 18 Hurkacz.

Following Federer's defeat, another legend of the Wimbledon courts – Boris Becker – suggested the end of the road may be approaching for the world number eight, who turns 40 in August.

And asked in a post-match news conference if he would be returning to Wimbledon, Federer conceded he is uncertain.

"I don't know. I really don't know. I've got to regroup. My goal was always for the last year and more to always try to play another Wimbledon," the eight-time champion said.

"The initial goal was to play last year, but that was never going to happen, plus the pandemic hit. I was able to make it this year, which I'm really happy about.

"With everything that comes after Wimbledon, we were always going to sit down and talk about it because clearly now Wimbledon is over. I've got to take a few days.

"Obviously we're going to speak a little bit tonight, depending on how I feel, then the next couple of days as well. Then we go from there. Just see, okay, what do I need to do to get in better shape so I can be more competitive?

"I'm actually very happy I made it as far as I did and was able to play Wimbledon at the level that I did after everything I went through. Of course, I would like to play it again, but at my age, you're just never sure what's around the corner."

Federer's exit leaves Novak Djokovic, who faces Denis Shapovalov in the semi-finals, as the clear favourite.

The 34-year-old world number one is aiming for his third grand-slam title of 2021, after triumphing in Melbourne and at Roland Garros.

Roger Federer may well have played his last match at Wimbledon after being dismantled at the quarter-final stage, according to Boris Becker.

Federer, seeking a ninth title at the grass-court grand slam, was comprehensively beaten in straight sets by the relatively unfancied 14th seed Hubert Hurkacz on Wednesday.

The 39-year-old was beaten 6-3 7-6 (7-4) 6-0 on Centre Court, missing out on becoming the oldest male to reach the semi-finals of the championship in the Open Era.

Three-time champion Becker thought the manner of Federer's defeat, in which he hit 31 unforced errors and suffered the ignominy of losing a set to love for the first time in his Wimbledon career, could leave him questioning whether this was his last visit.

"I don't know if we'll ever see the great man again here," he said to the BBC.

"It's normal for anybody to make mistakes, but if you're such a perfectionist as Roger Federer, some of these mistakes were way out of his league.

"It can happen in a game or a set even, but in his case it was pretty much the whole match.

"As they always say, time doesn't stand still for any man or woman."

Federer came into this year's tournament having played just eight matches in 2021 following a lengthy recovery from knee surgery.

The 20-time major winner battled through the first round when Adrian Mannarino retired in the fifth set but looked to have regained some sharpness in victories over Richard Gasquet, Cameron Norrie and Lorenzo Sonego.

After losing the opening set against Hurkacz, Federer let a 4-1 lead slip in the second before succumbing in the tie-break, after which he never regained a foothold in the contest.

"Maybe in the first round he was trying to find his feet, he was lucky to get through, but in the following matches, he played better and better. Did he have a perfect match? No, but he had moments of perfection," said Becker.

"On paper, he was the favourite today. For him to go out and lose potentially his last ever set six-love... oh, God.

"I hope [he comes back in 2022], I don't want to see Roger losing his last set here. But there are certain rules in professional tennis that even Roger Federer has to obey: it's matches. You don't get your match fitness in practice, you're not going to get it in rehab. You don't know how strong your knee, your thigh or your mind is unless you're put in a position [to win]. He wasn't good enough today."

Becker drew parallels between Federer's defeat and his own 1995 final loss to Pete Sampras – a match that convinced him his time on tour had come to an end.

However, the former world number one advised Federer to play the remainder of the year and see if he can start 2022 on a positive note.

"My moment came when I lost to Pete Sampras in the Wimbledon final of 1995. I thought I was playing good, and I lost in straight sets against the better player," he said.

"I always felt that, when I'm not able to win Wimbledon anymore, why bother coming? Roger won it eight times; he's not coming here to play a tough quarter-final. He's coming here to win.

"He has to take a bit of a rest, play the hard-court season, go to the US Open and play the rest of the year. Go to Australia – he won there a couple of times – and hopefully win another tournament or two. Only then [will] he realise if he's good enough still to compete at the highest level."

Roger Federer's quest for a ninth Wimbledon title is over after he suffered a stunning straight-sets defeat to Hubert Hurkacz in Wednesday's quarter-final.

Federer has not reached the heights of years gone by at the All England Club, as an injury spared his blushes in the fifth set in the first round against Adrian Mannarino and he lost a set to Cameron Norrie in the third round.

And the 39-year-old was undone in style by the big-serving Hurkacz, playing at this stage of a grand slam for the first time in his career after claiming a surprise five-set win over Daniil Medvedev in the fourth round.

That match stretched into a second day but Federer was the player bereft of energy, Hurkacz emerging victorious from the biggest match of his life by a 6-3 7-6 (7-4) 6-0 scoreline.

Hurkacz settled quickly despite the challenge of facing his childhood idol and had three break points at 2-2 and 40-0 in the first set, only to let that advantageous situation slip.

He did not make the same mistake two games later, emphatically dispatching a backhand volley to claim the sole break he needed to take the opener.

That looked a rare blip for Federer when he surged into a 4-1 second-set lead, only for Hurkacz to reel off the next three games en route to forcing a tie-break.

Hurkacz's prowess at the net continued to cause Federer problems and it was the Pole who eventually forged ahead in the tie-break, moving two sets up with a booming serve down the middle.

Unsurprisingly errant on the forehand side, a frustrated and flat Federer surrendered a break in his first service game of the third.

And two more came with a tame shot into the net and a wide forehand as the 20-time grand slam champion's challenge came to an end with him losing a set 6-0 at Wimbledon for the first time.

The sporting calendar provides many memorable days throughout the year but rarely do elite events overlap as often as at the Olympics.

At this year's delayed Tokyo Games, there is the prospect of seeing several of the world's top athletes all competing for gold at the same time.

August 1 looks a good bet for the standout day in 2021.

The final round of the men's golf event could see Rory McIlroy and Jon Rahm in the mix, with Andy Murray hopeful he will meanwhile be defending consecutive singles gold medals in the tennis.

This comes on the same day that Simone Biles could potentially become the most decorated Olympic gymnast of all time.

As if that were not enough, the men's 100m final is another must-watch event.

Expectations will be high heading into that second Sunday of the Games, with examples from the past three competitions living up to their billing...

AUGUST 16, BEIJING 2008

Michael Phelps and Usain Bolt would be firmly in contention to appear on the Games' own Mount Rushmore and each enjoyed one of the finest moments of their respective careers on the same day.

Phelps had spent the opening week of the Beijing Olympics pursuing Mark Spitz's 1972 record of seven golds and had six as he entered the pool again for the 100m butterfly final, almost 12 hours before Bolt's big moment.

Seventh at the turn, the United States superstar needed a remarkable recovery to triumph over a devastated Milorad Cavic by 0.01 seconds.

Phelps would pass Spitz with his eighth gold of the Games the following day, by which point he was sharing the headlines with Jamaica's own ultimate athlete.

Bolt's blistering 9.69-second final triumph in the 100m stood as a world record until the same man beat it exactly a year later. The new benchmark remains unmatched.

And that Saturday in China also saw the small matter of Roger Federer's only gold medal, claimed alongside Stan Wawrinka in the doubles final after falling to James Blake as the top seed in the singles.

AUGUST 4-5, LONDON 2012

It is actually tough to choose just one day from the 2012 Olympics, where this weekend delivered from start to finish.

On the Saturday evening, at the Aquatics Centre, swimming prepared to say goodbye to its greatest name. Phelps and the United States won the 4x100m medley, clinching his 18th gold medal in what appeared set to be his final race.

Indeed, Phelps confirmed his retirement following the Games, only to return in predictably dominant fashion in 2016.

Across the city that same night, Team GB athletes were capping a stunning run of medals that would see the day dubbed "Super Saturday". There were six home golds in all, including big wins for Jessica Ennis, Greg Rutherford and Mo Farah in quick succession.

The drama only continued the next day, too, as Murray finally sealed a Wimbledon win over Roger Federer in the tennis event, while Bolt lit up London Stadium in the 100m.

AUGUST 14, RIO 2016

Although there will be no Bolt brilliance in Tokyo, Brazil was treated to another show as he became the first three-time winner of the 100m – later doing likewise in the 200m.

The first triumph was almost overshadowed on the track, however, coming shortly after Wayde van Niekerk had broken Michael Johnson's 17-year 400m world record by 0.15 seconds.

Again, the excitement was not reserved for athletics, with Murray in action that evening to claim another gold after coming through a four-hour epic against Juan Martin del Potro.

Murray is the only player – men's or women's – to win consecutive singles golds, while Rafael Nadal's presence added a little more stardust even though he lost the bronze final to Kei Nishikori.

A stunning Sunday also saw Biles add to the reputation she takes with her to Tokyo, a third gold on the vault making her the most decorated American gymnast.

And there was history, too, for Justin Rose, as he edged past Henrik Stenson at the 18th hole of the fourth round to become the first Olympic golf champion in 112 years.

Daniil Medvedev once again came up short in five sets at Wimbledon as he was defeated by Hubert Hurkacz in their delayed fourth-round match.

World number two Medvedev had reached the quarter-finals in three of his previous four majors – after making the last eight in only one of the prior 13 – but the grass-court grand slam continues to provide him with some difficulties.

The Russian's run to round four was his best ever at the All England Club, having bowed out a stage earlier in each of his three previous main-draw appearances.

But Medvedev's campaign ended in the same fashion as each of those, again losing in five sets. He had appeared to overcome that hoodoo in round three this year when he rallied from two sets down against Marin Cilic.

This reverse was stretched over two days, with Medvedev leading 6-2 6-7 (2-7) 6-3 3-4 when rain intervened on Court Two on Monday.

Medvedev and Hurkacz headed to Centre Court to complete the job first thing on Tuesday, but the second seed could not complete the job.

The Polish challenger broke instantly and then served out the second set, teeing up a decider and bringing back bad memories for Medvedev.

A shabby display from the two-time major finalist then put paid to his hopes of a recovery, the fifth set featuring 12 unforced errors to Hurkacz's one.

Indeed, Medvedev failed to apply any sort of pressure, winning only four receiving points and failing to forge a break point opportunity. Hurkacz created and took two, triumphing 2-6 7-6 (7-2) 3-6 6-3 6-3.

As Hurkacz looks ahead to a first grand slam quarter-final against Federer, Medvedev will rue a missed opportunity.

He could have finished this championship as the world's number one had he claimed silverware or faced anyone other than the top-ranked Novak Djokovic in the final.

"I played really bad today. There's not much more to say," acknowledged Medvedev.