US Open champions past and present Andy Roddick and Carlos Alcaraz led a swathe of social media tributes to Roger Federer after the 20-time grand slam winner announced his retirement.

Federer, who has not played competitively since exiting Wimbledon at the quarter-final stage last year, revealed on Thursday that next week's Laver Cup will be his farewell tournament.

Federer appeared at a parade of former champions at Wimbledon earlier this year and hinted at his desire to feature at the All England Club once more, but his upcoming outing in London will now represent the swansong to his stunning career.

The Swiss great will become the first of the ATP Tour's 'Big Three' to exit the sport, with Rafael Nadal and Novak Djokovic still active. 

While Nadal and Djokovic have each surpassed Federer's tally of 20 major titles this year, the 41-year-old overtook Pete Sampras' previous record of 14 grand slam titles by beating Roddick in the 2009 Wimbledon final.

Roddick was among the first to pay tribute to Federer's achievements on Thursday, writing on Twitter: "Cheers Roger. Thanks for the shared memories my friend. 

"It was an honour to share time/experiences on the most hallowed grounds in our sport. Don't be a stranger."

Alcaraz, who clinched his first grand slam title and became world number one with a US Open final win over Casper Ruud on Sunday, simply wrote: "Roger…", accompanied by a heartbroken emoji.

Milos Raonic has seen his efforts to win a major title foiled by the presence of the 'Big Four' – with Andy Murray beating him on his sole grand slam final appearance at Wimbledon in 2016 – but he also showed his appreciation for Federer's impact.

"Thank you for doing more for tennis than any single individual," Raonic wrote. "Thanks to you competitors and fans across the world get to experience and enjoy it all over the world. 

"Congratulations on your achievements and the people you continue to impact in and away from tennis."

Juan Martin del Potro, who prevented Federer from winning six consecutive US Open titles with a five-set success in the 2009 final, labelled the 41-year-old irreplaceable, declaring: "I LOVE YOU, Roger. 

"Thank you for everything you've done in tennis and with myself. [The] tennis world will never be the same without you."

Former player-turned presenter James Blake added: "Roger, there was and never will be anyone like you. You crushed me on the court, but were so nice and genuine that I couldn't hate you for it. 

"You made the game better on and off the court and you will be missed. Good luck, you have earned all the success and joy in the world."

Garbine Muguruza tweeted: "RF" followed by a heartbroken emoji.

Those who shared a court with Federer were not the only ones to pay tribute, however.

A tweet from Wimbledon's official account read: "Roger, where do we begin? It's been a privilege to witness your journey and see you become a champion in every sense of the word. We will so miss the sight of you gracing our courts, but all we can say for now is thank you, for the memories and joy you have given to so many."

Roland Garros' official account tweeted: "An inspiration on and off the court. Thank you, Roger."

The US Open's handle simply posted: "Thank you, Roger."

Roger Federer has announced his retirement from tennis, declaring next week's Laver Cup in London will be his farewell tournament.

The Swiss great, who has won 20 grand slams, becomes the first of the 'Big Three' on the men's tour to call it a day, with Rafael Nadal and Novak Djokovic still active.

Federer said he was making a "bittersweet decision", having battled knee injuries in the hope of returning to the tour.

Now 41 years old, Federer wrote in a statement on social media on Thursday: "As many of you know, the past three years have presented me with challenges in the form of injuries and surgeries.

"I've worked hard to return to full competitive form. But I also know my body's capacities and limits, and its message to me lately has been clear.

"I have played more than 1,500 matches over 24 years. Tennis has treated me more generously than I ever would have dreamt, and now I must recognise when it is time to end my competitive career.

"The Laver Cup next week in London will be my final ATP event. I will play more tennis in the future, of course, but just not in grand slams or on the tour."

The Swiss great, who won eight men's singles Wimbledon titles, said he would "miss everything the tour has given me".

He returned to Wimbledon this year for a parade of champions, and said at the time he hoped to play there again, but in a competitive sense that will not happen.

Federer said there was "so much to celebrate", adding: "I consider myself one of the most fortunate people on Earth. I was given a special talent to play tennis, and I did it at a level that I never imagined, for much longer than I ever thought possible."

A player whose skills could take the breath away, Federer might trail Nadal by two and Djokovic by one on the all-time list of men's grand slam winners, but to many he will be remembered as the greatest of the trio.

Federer was a virtuoso with racket in hand, going past the previous record of men's grand slam singles wins held by Pete Sampras when landing his 15th major after an epic victory over Andy Roddick in the 2009 Wimbledon final.

He thanked his family and his support team in his announcement on Thursday, and hailed the fans who have always had his back.

Last year, Federer won the ATP's Fans' Favourite award for a 19th successive season.

He said: "You will never know how much strength and belief you have given me. The inspiring feeling of walking into full stadiums and arenas has been one of the huge thrills in my life. Without you, those successes would have felt lonely, rather than filled with joy and energy."

Federer has a financial stake in the Laver Cup, and earmarked it earlier this year as one of two comeback events, along with his home Swiss Indoors event in Basel next month.

However, now the hopes of playing that Basel event look to have been dashed.

His retirement decision comes in the wake of Serena Williams announcing last month she would be "evolving away from tennis".

Although she has tenuously left the door open for a change of heart, Williams' announcement was also effectively one of retirement too, and she was given a rousing send-off at the US Open.

Federer, whose career ran in close tandem with that of Williams, described his own career as "an incredible adventure".

"While it sometimes feels like it went by in 24 hours, it has also been so deep and so magical that it seems as if I've already lived a full lifetime," he added.

"I have had the immense fortune to play in front of you in over 40 different countries. I have laughed and cried, felt joy and pain, and most of all I have felt incredibly alive."

He recalled being "a ball kid" in Basel in his youth, and seeing players of a past generation at close quarters.

"They were like giants to me and I began to dream," Federer wrote. "My dreams led me to work harder and I started to believe in myself."

Federer had a reputation early in his career as a racket-smasher, and it was not clear that he had the temperament to maximise his talent.

That soon emerged, though, and Federer explained: "Some success brought me confidence and I was on my way to the most amazing journey that led to this day.

"So, I want to thank you all from the bottom of my heart, to everyone around the world who has helped make the dream of a young Swiss ball kid come true."

He added: "Finally, to the game of tennis, I love you and will never leave you."

With a security detail to rival that of a president, Roger Federer strode along St Mary's Walk and into Court 14, crowds on the concourses urged to clear a path for a man rarely seen in such parts of the All England Club.

This was the king among his people, out in the boondocks by his standards. With a mighty swish of his racket, he might just be able to launch a tennis ball onto Centre Court's roof from down here.

It was day two of the 2015 Wimbledon championships, a warm Tuesday morning, and Federer needed a warm-up before his opening match against Bosnian Damir Dzumhur, a player that later in the day he would trounce for the loss of just seven games. That would of course be a Centre Court assignment. Invariably all of Federer's matches get centre stage.

The tiny Court 14 seats a couple of hundred spectators, maybe a handful more at a push, and whispers had spread to mean many were occupied for what was an unadvertised practice session, a Federer guerrilla gig. The media had been given a little advance notice, and a glimpse of Federer at close quarters is hard to turn down.

There was a hefty hint Federer would be arriving when Stefan Edberg - his coach and childhood idol - showed up several minutes ahead of his charge and began to limber up, while Rob Walker of Wimbledon TV stood patiently with a camera crew and a stack of notes, ready to tell the story of the day Federer played where only mere mortals usually tread.

Suddenly more news crews appeared, a stream of day-trippers strolling past the inconspicuous court became more like a scrum, and out came the camera phones, ball boys and ball girls craning for a view, making sure of a close-up shot. A woman working for IBM grinned ear to ear. And in walked Federer, dressed head to toe in white Nike gear, carrying a couple of Wilson tennis rackets and a cap bearing his RF insignia.

A G4S security man practically bit off his bottom lip while attempting to keep a straight face and simultaneously enforce crowd control as Federer passed by him. Thou shalt not smile.

Applause rang out, fans with cheap-rate ground passes cooed at the sight of the then seven-time champion. Federer acknowledged the swelling crowd.

And for the next half-hour or so he and Edberg gently put in a light session, rallying from the baseline, these great champions going through the motions that on another day might have taken place out of public sight. It amounted to little more than a balm to the ego before lunch.

And this was just another day in the life of Roger Federer, who has now announced his retirement. He has probably forgotten all about it. Some will remember it for the rest of their lives.

Edberg takes on a real relevance in the story of Federer's retirement because they spoke together about how to go through the process.

Swedish great Edberg announced his own decision to quit in December 1995, a month before his 30th birthday, and the 1996 season became his farewell tour, feted everywhere he went.

But Edberg struggled with his form in that year of goodbyes and glad-handing, reaching only one final, losing to Boris Becker in the Queen's Club title match, and he ultimately regretted the hoopla that followed him around.

Speaking to The Tennis Podcast in 2020, Edberg explained how he warded Federer off following his example.

"We actually talked a little bit about it and I would not recommend it to anybody actually, even if it's a nice thing to do, because it does put too much pressure on yourself and there would be too many things going on in your mind," Edberg said.

"So if you're going to announce it, I would do it just before my last tournament or have it in my mind, but not for anybody else to know. It's very tough to handle, but at the same time it was a very memorable year, but I would not recommend it."

Federer only worked in tight tandem with Edberg for two years, but he has so much respect and admiration for the man that such advice was sure to have registered.

And now the 20-time grand slam winner is retiring. Let that sink in.

It will take some getting used to, tennis without Federer. Without his ritual beastings of young upstarts on tour, without his perfect manners, quasi-aristocratic foibles, and those multilingual, exquisitely delivered, post-match news conferences. Without Anna Wintour gazing down adoringly from the Royal Box. Without Mirka.

"I wanted to be a tennis player or a soccer player from a very young age," Federer said at Wimbledon some years ago.

Was there a Wimbledon final that tilted him the way of tennis?

"I think the Becker-Edberg final. I don't remember which year because they played a few times. I was sitting at home in the living room, watching them play, thinking hopefully one day I can be like them, you know," Federer said.

Edberg and Becker met in consecutive Wimbledon finals from 1988 to 1990, the Swede winning the first and last of those matches. Theirs was a great rivalry.

"That's I guess where idols and inspirations are good. They push you forward," Federer said. "Then along the way you joke around and say it's coming closer. When you win a practice match, you just fake like you've just won Wimbledon. All of a sudden it's really happening."

It was "really happening" for Federer by the late 1990s, as he won the boys' singles at Wimbledon in 1998, beating Georgia's Irakli Labadze, and barely 12 months later he was a top 100 player on the men's tour.

But he was a firebrand too as a teenager, something he was compelled to explain at Wimbledon in 2001, when the 19-year-old Federer became the centre of attention for the first time after defeating Pete Sampras, champion for the previous four years, in the fourth round.

Federer had been a picture of composure in that match and was asked whether he modelled his approach on ice-cool Pistol Pete.

"Not at all actually. I was throwing around my racket like you probably don't imagine," Federer said. "I was getting kicked out of practice sessions non-stop when I was 16. Now since maybe I think this year, I started just to relax a little bit more on court.

"I'm not smashing as many rackets as before. I realised that the racket throwing didn't help my game because I was always getting very negative."

When Federer got his hands on a grand slam trophy for the first time, it was Wimbledon in 2003 and he was lobbed a prescient question by a reporter who asked whether he might one day emulate seven-time champion Sampras at Wimbledon.

"This is one of his seven, you know. I'm so far away," he said. "I'm just happy to be on the board. If I look at all the players who have won here, a lot have been idols to me. Just to be on the board with (Bjorn) Borg and these people, it's just nice to be a part of history at Wimbledon."

Nevertheless, that was the first of five consecutive Wimbledon triumphs for Federer, matching a Borg record. Around such feats are legends created; because of the vicarious pleasure he provided to so many, crowds will forever flock around Federer, whether on Centre Court, Court 14 or his local food court.

As Federer's slam stack grew, and he nudged nearer Sampras' hauls of seven Wimbledon titles and 14 majors, the American great made his Swiss successor a promise: he would be there when those records began to fall.

When Federer fended off Andy Roddick 16-14 in the fifth set of the 2009 Wimbledon final to go to 15 slams, Sampras indeed was there, albeit he arrived late.

"It was a bit special," Federer said. "When he walked in and I saw him for the first time, I did get more nervous actually. I said hello to him, too, which is unusual. But I thought, I don't want to be rude."

And in 2017, nudging 36, Federer triumphed at Wimbledon for an eighth and final time, beating an injury hampered Marin Cilic.

"Winning eight is not something you can ever aim for, in my opinion," he said afterwards. "If you do, you must have so much talent and parents and the coaches that push you from the age of three on, who think you're like a project," he said. "I was not that kid. I was just really a normal guy growing up in Basel, hoping to make a career on the tennis tour."

At the beginning of 2018, he added a sixth Australian Open title to reach 20 slam crowns, a figure beyond the wildest dream of anyone in men's tennis before the Big Three showed up.

The argument rages on about who has been the greatest men's tennis star of all-time, and whether it should be Federer, Novak Djokovic or Rafael Nadal from this era who is the prime contender for such a nebulous crown.

Federer has a losing head-to-head against both his younger rivals, there is no escaping that fact. He trails Nadal 24-16 and Djokovic 27-23. Both have been whittling away at his records, taking their fair share. Yet Federer still has the most Open Era match wins among men at Wimbledon (105) and the Australian Open (102), the most wins in slams overall by a man (369), and the most grass-court singles titles in ATP tour history (19).

He won 103 tournaments, second only to Jimmy Connors (109). He underwent knee surgery twice in 2020 and returned to seek more silverware, because he believed he could still win, even as his 40th birthday approached.

Federer is the man who recalibrated the levels that players can reach in men's tennis, the game-changing figurehead that Nadal and Djokovic have been chasing from the outset of their own magnificent careers.

Without Federer to aim for, perhaps Nadal and Djokovic would not have scaled such great heights.

Perhaps, perhaps, perhaps...

What is certain is that the Federer era is ending. And that's the thing about eras, they always end. Sometimes, you've just got to be grateful to have lived through them. Roger that?

Roger Federer has announced his retirement from tennis, declaring next week's Laver Cup in London will be his farewell tournament.

The Swiss great, who has won 20 grand slams, becomes the first of the 'Big Three' on the men's tour to call it a day, with Rafael Nadal and Novak Djokovic still active.

Federer said he was making a "bittersweet decision", having battled knee injuries in the hope of returning to the tour.

Now 41 years old, Federer wrote in a statement on social media on Thursday: "As many of you know, the past three years have presented me with challenges in the form of injuries and surgeries.

"I've worked hard to return to full competitive form. But I also know my body's capacities and limits, and its message to me lately has been clear.

"I have played more than 1,500 matches over 24 years. Tennis has treated me more generously than I ever would have dreamt, and now I must recognise when it is time to end my competitive career.

"The Laver Cup next week in London will be my final ATP event. I will play more tennis in the future, of course, but just not in grand slams or on the tour."

Simona Halep has announced her season is over after undergoing nose surgery to address problems with her breathing.

Working with Serena Williams' former coach Patrick Mouratoglou, Halep enjoyed a promising 2022 following an injury-hit 2021 campaign, reaching the semi-finals at Wimbledon and moving up to ninth in the WTA rankings.

However, the two-time major champion has struggled since winning the Canadian Open last month, losing in the first round at the US Open.

Prior to her success in Canada, Halep was forced to retire in the second round of the Citi Open after enduring breathing difficulties, and the ongoing problem prompted surgery this week, with Halep disclosing she also elected for cosmetic changes to the nose.

The former world number one will miss the final events on the WTA Tour this year, but she explained the procedure was necessary.

She wrote on Twitter: "As you all know already because I've talked about it many times, in February, I was very close to stopping tennis because I didn't believe I have enough power to come back to top 10. I was going through many anxious moments and I thought it is time to stop cause it is emotionally unhealthy. 

"Then I was lucky to discover Patrick's academy where I felt so much passion that it gave me back my passion for tennis. Thanks to Patrick, I slowly started to believe that I still can play a good level of tennis.

"My goal was very clear: I gave myself one year to get back to top 10. And faster than I ever expected, in only two months, I was back to top 10. Goal achieved!

"But then, when I lost at the US Open, I realised that I'm completely exhausted mentally. Having problems with the breathing for many years already and becoming worse with the time, I decided to follow the advice of my doctors and do the needed surgery.

"I could never do it earlier because I never found the necessary three months for the recovery, because tennis was always the first priority in my life. But I felt it's the right time to do it and also to do something for myself as a person.

"That is why I did also the aesthetic part, that I wanted to do for a long time as I did not like my nose at all. So I did it, I solved the functional part and the aesthetic part.

"I don't know how long the recovery will take, for the moment I am not thinking about anything but recovery. What is sure, is that this year I won't be able to compete in any official tournament anymore.

"My 2022 season is over. 2022, you have been an interesting year full of everything! See you on court, 2023! I feel I still have a lot to do on a tennis court and still have some goals."

Wimbledon champion Elena Rybakina advanced to the third round of the Slovenia Open after a convincing 6-4 6-1 victory against Tereza Martincova on Wednesday.

Rybakina, who in July became Kazakhstan's first ever grand slam champion, was too strong for her Czech opponent, creating 14 break point opportunities in the match while only facing two herself.

Her first serve accuracy was not great at 52 per cent, but she was devastating when she landed it fair, converting 21-of-24 chances.

Rybakina will face Lesia Tsurenko in the next round after the Ukrainian upset fifth seed Ekaterina Alexandrova 7-5 7-6 (7-5).

Second seed Beatriz Haddad Maia also had no issue navigating the challenge of Cristina Bucsa 6-1 6-4, and she will meet Ana Bogdan in the third round after the Romanian defeated Tamara Zidansek 6-1 6-7 (7-5) 6-1.

Meanwhile, in India at the Chennai Open, popular Canadian Eugenie Bouchard collected consecutive wins for the first time March 2021 following a lengthy recovery from shoulder surgery.

The 28-year-old defeated Karman Kaur Thandi 6-2 7-6 (7-2) as she looks to climb back up the rankings, currently sitting 902nd in the world after peaking at number five back in 2014.

Earlier in the day, sixth seed Qiang Wang was upset by Japanese qualifier Nao Hibino 6-2 6-3, while fifth seed Rebecca Peterson was also eliminated, going down 6-4 6-2 to Linda Fruhvirtova.

Wrapping up the day's action, Canada's Rebecca Marino booked a potential showdown with third seed Magda Linette after beating Poland's Katarzyna Kawa 7-5 6-3.

Serena Williams joked NFL superstar Brady "started an amazing trend" as she hinted at a possible return to tennis in the future.

Williams, a 23-time grand slam champion, revealed before the US Open she was soon to retire from the sport, with her Flushing Meadows run widely expected to mark the end of her career.

The 40-year-old exited her home major at the hands of Ajla Tomljanovic in the third round but was unwilling to categorically state if she was retiring.

Speaking at a news conference after that loss to Tomljanovic two weeks ago, Williams said: "I've come a long way since last year at Wimbledon. I'm just not sure if that was my last moment or not."

Some of the biggest names from around the sporting world have since paid tribute to Williams, but she has offered a further indication she is not done just yet.

"Tom Brady started an amazing trend. That's what I want to say," Williams said during an appearance on The Tonight Show with Jimmy Fallon.

Brady announced his retirement in February after 22 seasons in the NFL, only to reverse that decision 40 days later by agreeing to return to the Tampa Bay Buccaneers.

"I think retirement is something that is super earned and that people work really hard for," Williams added.

"I feel like I'm at an age where I definitely have a lot more to give and there's a lot more that I want to do, so I'm not going to be relaxing, there's so much more for me.

"I feel it's more of an evolution of Serena. There's many things I've been wanting to do for so many years, and I've had such a passion for tennis for so long I've never done them.

"Now it's time for me to start to enjoy those things."

Wimbledon champion Elena Rybakina came from a set down against Laura Siegemund to secure her place in the second round of the Slovenia Open.

Siegemund won the first set on a tie break, but Kazakhstan representative Rybakina stormed back to win the second before winning a tense 10-8 tie break in the crucial third set, surviving a match point in the process.

The world number 25's victory sets up a second round meeting with Tereza Martincova, who overcame a poor first set to beat Harriet Dart 0-6 6-4 6-1.

At the Chennai Open, top seed Alison Riske-Amritraj was beaten in straight sets in an upset defeat to world number 147 Anastasia Gasanova.

There were no such upsets for the second and third seeds though, as Varvara Gracheva and Magda Linette both cruised to victory to clinch their safe passage to the second round.

Elsewhere, Katie Swan beat Arianne Hartono 6-1 6-2 while India's number one singles player Ankita Raina was knocked out of her home tournament by Tatjana Maria.

Frances Tiafoe has replaced John Isner in the Team World line-up for next week's Laver Cup in London.

Isner has failed to recover from the wrist injury that forced him to withdraw from the US Open ahead of his second-round match against Holger Rune.

Fellow American Tiafoe knocked out Rafael Nadal en route to reaching the semi-finals at Flushing Meadows, where he was beaten by tournament winner Carlos Alcaraz.

The 24-year-old, now at a career high of 19th in the ATP rankings, will take Isner's place at the O2 Arena as Team World aim to end Team Europe's run of four triumphs in a row.

Tiafoe previously took part in the tournament in 2017 and 2018, but has missed the past two editions.

Team World captain John McEnroe said: "I am thrilled to have Frances on the team. 

"He's raised his game to a whole new level and has shown he can compete and win against the best players on Tour. He brings a positive energy that should help the entire team."

Tiafoe joins Felix Auger-Aliassime, Taylor Fritz, Diego Schwartzman, Alex de Minaur and Jack Sock on McEnroe's six-man team.

Team Europe, led by Bjorn Borg, is made up of Nadal, Novak Djokovic, Stefanos Tsitsipas, Casper Ruud, Roger Federer and Andy Murray.

The tournament is contested on an indoor hard court and runs for three days from September 23.

Emma Raducanu was not able to see out victory against Dayana Yastremska at the Slovenia Open as her opponent retired when two points from defeat.

Raducanu, returning to action after a first-round loss at the US Open, where she had been the defending champion, looked set to ease past Yastremska.

The Briton did advance to the second round, but only courtesy of a premature conclusion to the match.

Raducanu led 6-2 5-3 and was 30-0 up in her own service game when Yastremska retired, complaining of a wrist injury.

Yastremska has previously been accused of gamesmanship for similar antics; of her now six career mid-match retirements, all have come with her a break down and about to lose, with four coming in a potentially decisive game.

Her decision to quit at this year's Australian Open was particularly unpopular, with Madison Brengle on the brink of inflicting a third-set bagel.

However, Raducanu did not look to criticise Yastremska after this latest contentious finale.

"Obviously no one wants to win by retirement," the top seed said. "But Dayana is an extremely ferocious competitor, so I knew it was going to be a tough match going in."

Fellow seeds Beatriz Haddad Maia, Ekaterina Alexandrova and Anastasia Potapova all also progressed in Portoroz.

At the Chennai Open, only eighth seed Chloe Paquet was subject to a scalp against Karman Kaur Thandi, with Rebecca Peterson and Eugenie Bouchard among the other victors.

Carlos Alcaraz has a mixture of the qualities Rafael Nadal and Novak Djokovic possess, according to the man he defeated in the men's US Open final Casper Ruud.

Prodigious Spanish talent Alcaraz became a grand slam champion for the first time at the age of just 19 thanks to a 6-4 2-6 7-6 (7-1) 6-3 triumph at Arthur Ashe Stadium on Sunday.

It was a win that propelled him to the top of the world rankings for the first time, while Ruud has now lost two slam finals this year having been defeated by Nadal at the French Open.

Ruud was philosophical about losing to a player many believe will be the dominant force in the men's game, likening his movement on the court to legends Nadal and Djokovic.

"When someone asks about a player's biggest weapon you tend to think forehand, backhand, serve, whatever it is," Ruud said.

"But sort of his movement is one of his many weapons. It makes us other players feel like you need to paint the lines sort of to be able to hit a winner. Sometimes even that's not enough.

"He's very fast. He's very quick. He's a great mover. He can get to balls that we've probably never seen before.

"But you have other great movers, as well. I mean, this game has become so physically demanding, and all the players in the top of the world, they do the right things to improve always.

"Speed, agility of the players I think are just improving, improving. The physical aspect has been not changed but it has improved by everyone.

"I think Novak and Rafa and also [Roger] Federer, I think they kind of set the bar on how well you can move out there. 

"Rafa, when he was Carlos' age, he was also similar. He tracked down everything. Almost no one could hit a winner on him. Novak the same with his flexibility. He gets to certain shots that you think, 'how is that even possible?'

"Carlos has sort of a mixture of both. He's fast, flexible. He can slide around. It's impressive. He's a hard nut to crack."

Ruud can take consolation from the fact his second appearance at a slam final was a marked improvement on Roland Garros where Nadal breezed to a 6-3 6-3 6-0 triumph.

The Norwegian conceded he had more belief going up against Alcaraz in New York, though he – somewhat tongue-in-cheek – added he hopes not to play a Spaniard in any future slam finals.

"I think obviously if you reach a grand slam final, whoever you play will be a great player on the opposite side of the net," he added.

"At Roland Garros, it was hard for me to believe that I could beat Rafa. Today was not easier, but I believed it more. I think these two tournaments have sort of made my self-belief to win a grand slam grow.

"Hopefully these two experiences can help me. I guess I hope I don't play a Spanish player if I ever reach another slam final! They know what they're doing in the slam finals. Let's hope for another than a Spanish [player]."

Ruud added: "I still thought I was the underdog in a way because of Carlos, he's on paper higher ranking and all these things. 

"But it was more fun for me today. I didn't need to play the biggest idol of my life on the biggest match of my life. It was sort of easier for me to believe that I could win."

Carlos Alcaraz never thought his success would come as quickly as it has, with the 19-year-old becoming the youngest men's world number one in history by defeating Casper Ruud in the US Open final on Sunday.

It was Alcaraz's first grand slam final, and in the process he broke the record for the most cumulative court time at a single grand slam after grinding through three consecutive five-set matches in the lead-up to the four-set final.

This is the third big tournament the Spaniard has won this year. He became the first player born after the year 2000 to win an ATP 1000 Masters event when he beat Ruud at the Miami Open, and then followed it up with a straight-sets win over Alexander Zverev in the Madrid Open final.

Speaking to the media after his maiden major title, Alcaraz called it "crazy" and a "dream".

"Well, it's crazy for me," he said. "I never thought that I was going to achieve something like that at 19 years old – everything has come so fast.

"For me it's unbelievable. It's something I've dreamed since I was a kid, since I started playing tennis. Of course, lifting this trophy today is amazing for me.

"Right now I'm enjoying the moment – I'm enjoying having the trophy in my hands – but, of course, I'm hungry for more. 

"I want to be at the top for many, many weeks – hopefully many years. I'm going to work hard again after this… I'm going to fight for more of this."

With his rapid rise to the pinnacle of the sport, Alcaraz said his victory in Miami was when he realised the path he was on could include grand slam titles.

"Honestly, since I won Miami," he said. "Since I won Miami, I thought I was able to have a grand slam in my hands.

"But before Miami, I was thinking that I have to still grow up. I thought that I'm able to have good results in a grand slam, but not a champion.

"But I would say after Miami – I won great matches in a row – I would say after that I thought that I'm able to win a grand slam."

Casper Ruud was understandably disappointed to miss out on the US Open title and the world number one spot, but he vowed to continue his pursuit of a major breakthrough.

Ruud played his second grand slam final of the season at Flushing Meadows on Sunday, yet that match ended in the same manner as his French Open defeat to Rafael Nadal.

The Norwegian, who would have led the rankings had he taken the title, went down 6-4 2-6 7-6 (7-1) 6-3 to Carlos Alcaraz, who instead himself became the youngest ever number one.

It was the first major final played between two men looking to become number one for the first time.

Ruud was bidding to make the biggest leap to the top of the rankings, having previously been the world number seven.

It was not to be, but the 23-year-old's reward for his form in New York was number two – a fine consolation prize.

"It's tough to explain everything," Ruud said, reflecting on his season. "Things have been going so well. I'm so excited for it.

"Today was a special evening. Both Carlos and I knew what we were playing for, we knew what was at stake.

"It's fun that both finalists would be number two and number one tomorrow. I think it's fitting.

"I'm disappointed, of course, that I'm not number one, but number two is not too bad either. I will continue to chase for my first grand slam and the number one ranking."

Carlos Alcaraz was determined fatigue would not get the better of his US Open title tilt, but he accepted he was "a little bit" tired after defeating Casper Ruud in Sunday's final.

Alcaraz set a grand slam record for the most time spent on court at a single tournament, in large part due to playing five-set matches in the fourth round, quarter-finals and semi-finals.

Still, the 19-year-old had enough energy left to take down Ruud in four sets, with his 6-4 2-6 7-6 (7-1) 6-3 victory making him a first-time major champion and the new world number one.

Asked if he would now acknowledge the effects of this run on him, Alcaraz replied: "A little bit.

"I always say it's not time to be tired in the final round of a grand slam or any tournament; you have to give everything on court, everything you have inside. It's something I work really, really hard on."

Alcaraz is the youngest player to ever sit atop the men's rankings, and he added: "This is something I dreamt of since I was a kid, to be number one in the world, to be a champion of a grand slam.

"It's something I worked really, really hard for. It's tough to talk right now. There's a lot of emotions right now.

"This is something I tried to achieve. All the hard work I did with my team, my family... I'm just 19 years old, so all the tough decisions are with my parents, my team as well. This is something that is really, really special for me."