Rafael Nadal and Nick Kyrgios could face off in the inaugural United Cup, while WTA world number one Iga Swiatek will represent Poland.

The United Cup is the new warm-up tournament for the ATP and WTA Tour seasons, and will take place in Australia in December and January.

While ATP world number one Carlos Alcaraz will not feature, compatriot Nadal will be competing for Spain, and they have been drawn alongside Australia and Great Britain in Group D.

Those matches will be played in Perth, with a clash between Nadal and Kyrgios, who have enjoyed an entertaining rivalry down the years, in the offing.

They were set to meet in the semi-finals at Wimbledon this year, but Nadal withdrew due to injury, handing Kyrgios a walkover into his first grand slam final, which he lost to Novak Djokovic, who will not be playing in Australia.

Serbia are not among the batch of teams taking part, but even so, there remains doubt whether Djokovic would be able to enter Australia given his stance against the COVID-19 vaccine, which eventually saw him deported from the country after a drawn-out legal battle ahead of this year's Australian Open.

Emma Raducanu has decided against playing for the British team, which also does not feature Andy Murray.

Casper Ruud, the beaten US Open finalist, will play for Norway in Group E, in Brisbane, while Alexander Zverev will be in action for Germany.

Swiatek is the biggest name from the WTA Tour to enter, with the brilliant 21-year-old lining up alongside Hubert Hurkacz for Poland in Group B.

Maria Sakkari and Stefanos Tsitsipas, along with his brother Petros, will team up for Greece in Group A.

Two more countries will be admitted to the tournament later in November.

Dominic Stricker defeated home favourite Lorenzo Musetti in five tie-break sets to make it two wins from two at the ATP Next Gen Finals and advance to the semi-finals.

The world number 111, who is seeded sixth in Milan following a flurry of withdrawals, defeated Musetti 4-3 (7-5) 4-3 (8-6) 3-4 (9-7) 3-4 (8-6) 4-3 (7-3) in Wednesday's epic match that last two hours and 31 minutes.

Having become the first player in the tournament's history to win three successive tie-breaks in Tuesday's win against Jack Draper, Stricker advances with a match to spare.

Musetti now faces a winner-takes-all showdown with Jack Draper on Thursday after the latter recovered to defeat Tseng Chun-hsin 1-4 4-2 4-3 (7-2) 4-2.

In the Green Group, Francesco Passaro saved three match points to overcome Italian compatriot Matteo Arnaldi 4-3 (9-7) 2-4 3-4 (7-4) 4-3 (7-4) 4-3 (10-8).

In what will go down as one of the all-time great matches in Next Gen history, Passaro triumphed after two hours and 38 minutes to get off the mark with his first victory.

"I am very tired," he said. "It was a really long match and this format I think it is tough and physical.

"For me it was physical today, with the tension as well, I was cramping. It was not easy. I am really happy to win and I will enjoy."

Brandon Nakashima moved to the top of the standings with a 4-1 4-3 (7-2) 4-2 victory against Jiri Lehecka as the third seed made it back-to-back wins at the Allianz Cloud.

Lorenzo Musetti enjoyed a winning start at the ATP Next Gen Finals in Milan after seeing off Tseng Chun-hsin in straight sets on Tuesday.

The highest seed at the tournament after Holger Rune's withdrawal, world number 23 Musetti eased to a 4-2 4-2 4-2 victory in just 70 minutes at the Allianz Cloud Arena.

The home favourite is making his second appearance at the event and arrives after an impressive year on the ATP Tour that yielded titles in Hamburg and Naples.

"It was really nice," Musetti said during his on-court interview. "I remember playing here from last year. The crowd here is really amazing. They gave me extra energy. I am pretty confident and happy with the win."

Elsewhere in Red Group, third seed Jack Draper was beaten 4-3 (7-5) 4-3 (7-5) 4-3 (7-5) by Dominic Stricker, who became the first player in Next Gen Finals history to win three successive tie-breaks.

Ranked 111th, the Swiss debutant hit 14 aces on the way to overcoming the world number 41.

Meanwhile, in Green Group, San Diego champion Brandon Nakashima prevailed in an epic five-set thriller against Matteo Arnaldi 2-4 4-3 (9-7) 4-3 (7-4) 3-4 (4-7) 4-2.

The fourth seed is aiming to go the extra couple of steps this year, having reached the semi-finals 12 months ago.

"Right from the beginning, it was a lot of critical points, the sets were going by fast, so I just tried to adapt as quick as possible," Nakashima said. "The tie-breaks, I was kind of lucky to squeeze them out, and today I think it was just all about finding a way out here.

"He's a super tough opponent, he was playing really well, and it was just some critical points in the end that helped me get over the line."

The day's other match saw Jiri Lehecka celebrate his 21st birthday by defeating Francesco Passaro 4-1 4-3 (9-7) 4-1 in just 67 minutes on his debut.

Holger Rune stunned Novak Djokovic to win the Paris Masters title as the teenager confirmed his ascendancy into the tennis elite.

The 19-year-old defeated Djokovic 3-6 6-3 7-5, fending off the six-time champion at the indoor event to earn a place in the top 10 for the first time, becoming the first Danish man to reach such heights.

Rune becomes the first player since the ATP rankings were launched in 1973 to have beaten five top-10 players in the same tournament, other than at the season-ending ATP Finals.

His scalps on the route to his maiden Masters 1000 final included Hubert Hurkacz, Andrey Rublev, Carlos Alcaraz – who retired when trailing in their quarter-final – and Felix Auger-Aliassime.

Now Rune can add last year's Paris champion Djokovic to that list, defeating the 21-time grand slam winner who had described his young opponent as the future of tennis on the eve of the final.

Rune becomes the youngest Paris Masters champion since an 18-year-old Boris Becker triumphed in 1986, and he did it the hard way too, coming from behind after Djokovic made the stronger start.

Djokovic broke Rune's serve in the fourth game to lead 3-1 and take an early grip, soon seeing out the opening set.

Yet Rune charged 3-0 ahead in the second and grew in confidence. There was even a Djokovic-like raised fist after getting the better of his illustrious rival in one thrilling rally

Djokovic roared ahead in the decider, but not intimidated by the occasion, Rune struck back to recover the early break. 

Rune then broke to lead 6-5, as his Serbian opponent became erratic.

Nobody beats Djokovic without a fight though, and the 21-time grand slam winner had six chances to break back in the next game.

Rune survived them all and clinched victory on his second match point when Djokovic, who had been chasing a record-extending 39th ATP 1000 title, netted on the half-volley.

Addressing Rune in an on-court interview, Djokovic said: "You absolutely deserve this victory. What an amazing week you had.

"I'm not happy that you beat me, but on the other hand I'm happy for you because I like your personality, I think you're a very dedicated guy that loves tennis and puts a lot of hours into hard work.

"It's paying off for you, and I'm sure the future is bright for you and your team, so congratulations."

Rune, who is working with Serena Williams' former coach Patrick Mouratoglou, said: "This must be my favourite tournament now, I really enjoyed my time here."

Novak Djokovic lavished Holger Rune with the highest praise before their showdown in the Paris Masters final, declaring: "He kind of reminds me of myself."

Serbian superstar Djokovic scraped past Stefanos Tsitsipas in their semi-final on Saturday, snatching a 6-2 3-6 7-6 (7-4) victory.

Now 19-year-old Danish player Rune awaits the 21-time grand slam winner in Sunday's title match, a clash of generations that is full of promise.

It will be a record 56th Masters 1000 final for Djokovic, and a first for Rune, who will climb to 10th in the world should he win.

Rune is already assured of at least 12th position on the ATP list, a career-high, after knocking out four top-10 players this week: Hubert Hurkacz, Andrey Rublev, Carlos Alcaraz – who retired when trailing in their quarter-final – and Felix Auger-Aliassime, who he beat 6-4 6-2 on Saturday.

In his entire young career before this week, Rune had only beaten four players from the top 10, so this week marks a significant step, no matter how the final goes.

"No doubt that he's the future of the sport, along with Alcaraz and some other guys," Djokovic said. "Hopefully I can suspend his first title Masters 1000 event. We get along really well, good friends off the court.

"Of course on the court, we're competitors. I played him only once, at the last US Open, a good battle, four sets. He has improved a lot, no doubt. He physically is a very fit guy. He's young, so not much to lose. Just swinging through the ball.

"He kind of reminds me of myself, solid backhand and very good defence and just competitive, every point leaving his heart and his legs out there on the court. It's nice to see that. I think he's very good for our sport in general."

Djokovic said it was reassuring to fend off Tsitsipas, who had led by a break in the deciding tie-break.

"It means a lot mentally, emotionally for me, more than anything," said Djokovic. "I need to also make a statement that I'm still there with the young guys, that I'm able to compete with them and win such tight matches."

Six-time champion Djokovic has now reached an eighth final at this tournament, getting to the title match three times more than anyone else, with Boris Becker next on the list with five appearances.

Novak Djokovic overcame Stefanos Tsitsipas in a dramatic final-set tie-break to reach the Paris Masters final on Saturday, teeing up a meeting with Holger Rune. 

Djokovic's 12-match winning run looked likely to be halted when Tsitsipas found a mini-break in the decider, with the Greek having fought his way into contention after losing the opening set.

However, the 21-time grand slam champion stepped up when it mattered, winning the final four points of the match to seal a 6-2 3-6 7-6 (7-4) victory.

The Serbian, who will now take part in his record 56th Masters 1000 final on Sunday, opted to praise Tsitsipas for his role in a thrilling encounter following the win. 

"It's very sweet, obviously, when you win matches like this against one of the best players in the world," Djokovic said.

"I thought I started the match very well, again, great hitting, like yesterday in the quarters. I had chances early on in the second, I didn't break his serve. The momentum shifted, the crowd got into it. I think he elevated his level of tennis.

"We went into an even battle all the way until the last point, until the last shot. Some incredible points towards the end. I'm just really glad to overcome this challenge."

In Saturday's other match, Rune clinched his first Masters 1000 final appearance by posting a straight-sets victory over Felix Auger-Aliassime.

The in-form Dane seized control of the contest after breaking in the third game of the opener, and did not give up a single break point en route to a comprehensive 6-4 6-2 win.

In doing so, Rune exacted revenge for last week's defeat to Auger-Aliassime in the Swiss Indoors final in Basel, halting the Canadian's 16-match winning run.

Rune has now won eight career matches against top-10 opponents, and half of those victories (four) have come during his strong run in Paris this week.

Carlos Alcaraz will miss the ATP Finals and the Davis Cup Finals after his season was cut short by an abdominal injury.

The world number one suffered an internal oblique muscle tear during a Paris Masters quarter-final against Holger Rune on Friday.

Alcaraz retired early in a second-set tie-break after losing the opening set 6-3 in the French capital.

The US Open champion on Saturday revealed it will take him six weeks to recover from the injury, so Taylor Fritz will take his place in the ATP Finals in Turin next week.

Teenager Alcaraz will also be unavailable for Spain's bid to win the Davis Cup on home soil, with the prestigious event getting under way on November 22 in Malaga.

He posted on Instagram: "After my withdrawal yesterday and having been evaluated by my medical team, Dr Juanjo Lopez and Juanjo Moreno, unfortunately this is the result of my injury: an internal oblique muscle tear in the left abdominal wall with an estimated recovery time of six weeks.

"Unfortunately I won't make the ATP Finals or the Davis Cup Finals. It is tough and painful for me to miss these two events, which are so important to me, but all I can do is be positive and focus on my recovery. Thank you for the support!"

The 19-year-old became the youngest player to top the ATP rankings after winning his maiden major title at Flushing Meadows in September and ends a magnificent season with a record of 57 wins and 13 defeats.

He has won five ATP Tour titles in 2022, with Masters 1000 triumphs in Miami and Madrid along with his finest hour in New York.

Novak Djokovic outclassed Lorenzo Musetti to reach the Paris Masters semi-finals after Carlos Alcaraz retired due to an abdominal injury.

Djokovic moved into the last four of a Masters 1000 event for a staggering 74th time with a commanding 6-0 6-3 victory over Musetti on Friday.

The defending champion will do battle with Stefanos Tsitsipas for a place in the final as he eyes a seventh Paris Masters title.

Sixth seed Djokovic made only 10 unforced errors and broke five times, not allowing his Italian opponent to have a game point until early in the second set.

The 21-time grand slam champion only needed 74 minutes to dispatch the unseeded Musetti, moving two victories away from a fifth title of the season.

Meanwhile, world number one Alcaraz's participation in the ATP Finals next week is in doubt after he was injured in his quarter-final against Holger Rune.

Rune won the first set 6-3 and the Dane was 3-1 up in a second-set tie-break when US Open champion Alcaraz brought the match to a premature end.

As Alcaraz prepares to discover whether he can play in the season-ending tournament in Turin, Rune can look forward to facing Felix Auger-Aliassime in his maiden Masters 1000 semi-final.

Auger-Aliassime beat Rune to take the title in Basel last weekend and the Canadian stretched his winning run to 16 matches by beating Frances Tiafoe 6-1 6-4.

Tsitsipas was the last man to seal his place in the semi-finals, getting the better of Tommy Paul, who beat Rafael Nadal earlier in the week, 6-2 6-4.

Novak Djokovic remained on course for a record-extending seventh Paris Masters title after booking his quarter-final place with victory over Karen Khachanov.

The six-time champion avenged his defeat by Khachanov in the 2018 Championship match by running out a commanding 6-4 6-1 winner.

That gave Djokovic his 11th straight victory in the French capital, where he is unbeaten since that 2018 defeat, while he has also won each of his last 11 Tour-level matches.

The Serbian, who has triumphed in Tel Aviv and Astana during that streak, set up a last-eight clash with Lorenzo Musetti after the Italian came from behind to stun third seed Casper Ruud 4-6 6-4 6-4.

The Naples champion recorded his maiden top-five victory at the seventh attempt, while he hit 37 winners to advance to his first ATP Masters 1000 quarter-final.

Meanwhile, world number one Carlos Alcaraz won five out of seven break points as he breezed past Grigor Dimitrov 6-1 6-3 to reach the last eight in Paris for the first time.

There, he will play Holger Rune after the Stockholm champion defeated seventh seed Andrey Rublev in straight sets.

Fifth seed Stefanos Tsitsipas overcame Corentin Moutet 6-3 7-6 (7-3) to reach his 14th quarter-final of the season, where he will face Tommy Paul after the American denied Pablo Carreno Busta 6-4 6-4.

Felix Auger-Aliassime was a commanding 6-1 6-3 victor over Gilles Simon. The eighth seed will take on Frances Tiafoe, who defeated Alex De Minaur 6-3 7-6 (7-5).

Daniil Medvedev feels he may have been at a disadvantage in his opening match at the Paris Masters, going down 6-4 2-6 7-5 against Alex de Minaur in the second round.

While it was De Minaur's second match of the week, having fought his way through the first round in a three-set win against Sebastian Korda, Medvedev had the bye straight through to round two.

He pointed to that fact when discussing what he thinks went wrong for him, while also crediting De Minaur for rising to the occasion during big points.

In his post-match press conference, Medvedev said he did not feel he played poorly, but De Minaur was just in terrific touch.

"I think he played pretty well," he said. "I think even in the third set I had the break up, and he played an amazing game on my serve where I served only first serves, and he made some winners. 

"Actually, I think I had my chances to win the match – but didn't use them – and he managed to keep enough pressure on me at the end of the match to win.

"But that's tennis, you know. Like I just watched Felix [Auger-Aliassime] win [in a close third-set tiebreaker] and I'm going, 'whoever loses this match is gonna hate tennis for a few days'... two people, only one can win."

When asked if his victory at the Vienna Open – where he beat Denis Shapovalov in the final just four days ago – had him feeling not at his sharpest on such a quick turnaround, he admitted it was a factor.

"Well, I had a lot of matches under my belt back to back, and it's never easy," he said. "The positive thing is that you feel confident. 

"My impression, if you win the first match of the week, that's where you really have a lot of feelings and you have a confidence boost for the next match.

"But it's the first match that is the toughest. It was a tough match. Alex played very well. Had he played a bit less well, I would have won. But he did his job, you know, and he won."

Medvedev will be part of the field contesting the ATP Finals in Turin later this month.

Rafael Nadal has turned his focus to the ATP Finals after his shock exit from the Paris Masters, though found it hard to visualise success in Turin.

World number two Nadal crashed out in the second round of the ATP 1000 event on Wednesday, going down 3-6 7-6 (7-4) 6-1 to Tommy Paul.

Nadal, who was contesting his first match since his Laver Cup doubles exhibition with the now-retired Roger Federer, took the opening set and appeared on his way to a comfortable victory when he went up a break in the second.

But Paul broke straight back, going on to win the tie-break before storming home in the decider as Nadal seemed to struggle physically the longer the match dragged on.

Speaking to the media after the loss, Nadal gave credit to his opponent and said he did not deserve to win after blowing his chance.

"It's okay – all the credit to Tommy," he said. "Things happen sometimes.

"I think he played aggressively, a lot of great shots. I had my match in that second set, with a set and break [lead]. 

"I played a terrible game there. I didn't deserve the victory playing that bad in that key moment, no.

"Until that moment, it was okay, a good match for me. Knowing that this is my first match in a while – and this surface especially, you cannot make mistakes with your serve.

"We are always ready to find excuses, but in the end, it's always the same. You play well, you win; you don't, you lose. 

"For moments, putting everything in a pack, I was playing quite well. Then at the right moment, I didn't make the right things. So that's it – he played well, he's having a great year."

Turning his attention to the season finale in Italy, Nadal said he will be there if everything goes to plan.

"Yes, I hope, if nothing happens, I hope to be there," he said. "I'm excited about playing, even if it hasn't been the perfect couple of months for me, of course. 

"But yeah, nothing to lose. After a good year, going there, just trying my best. It's true that for the last five months I didn't spend enough days on the Tour.

"I don't even say competing on a tennis court – I say on the Tour. Practicing with the guys, that's what I need."

His lack of a strong build-up to the tournament has 22-time grand slam champion Nadal admittedly not liking his chances, saying it would be "difficult to imagine" this being the year he is able to win his first ATP Finals title.

"I mean, for me it's difficult to imagine now arriving in good enough shape to win a tournament like this one that I didn't win during my whole tennis career," he said.

"To play against the best players of the world, from the first day you need to be there and the rhythm, conditions, that will not happen. 

"So the only thing I can do is try to be there earlier, have some good practice with the guys and then give my best on the court – and hopefully the level of tennis will be there, and the body too.

"I can't predict much, and I honestly don't think much about what I have to do or what I don't have to do to be really there. 

"I just think about 'be better' – I need to improve a couple of things, and then I need to play sets against the best players, to feel myself again, competitive against everyone.

"That's it – I'm gonna try to make that happen – and if not, you know what, there's going to be next year, and I'm going to try to have the best season possible to start strong."

Rafael Nadal joined Daniil Medvedev in making a shock early exit from the Paris Masters on Wednesday.

While world number one Carlos Alcaraz overcame Yoshihito Nishioka 6-4 6-4 to progress to the last 16, there was no such luck for compatriot Nadal, whose chances of ending the year at the top of the ATP rankings are over after a defeat to Tommy Paul.

World number two Nadal looked well set to progress after claiming the first set 6-3 in just over 40 minutes, yet American Paul rallied to seal the biggest win of his career 3-6 7-6 (7-4) 6-1.

The 22-time grand slam champion said on Tuesday that he is no longer concerned with competing for the top spot in the world, though he will no doubt be frustrated at bowing out at the first hurdle ahead of the ATP Finals later this month.

Paul became the first player to defeat Nadal prior to the quarter-finals of the tournament when he sent a controlled backhand volley away from the forlorn 36-year-old.

Nadal was not the only big-name exit, with world number three Medvedev also slumping to defeat, going down 6-4 2-6 7-5 to Alex de Minaur.

For Australian De Minaur, it was his first win in 19 attempts against a player ranked in the top five and sets up a third-round clash with Frances Tiafoe, who beat Jack Draper.

"It's a good one to get, for sure," said De Minaur. "It's the end of the year, everyone's a bit tired, but I'm very proud of my performance. I just played very smart.

"I knew it was going to be a chess match out there, both baiting each other to be aggressive, but you also didn't want to be too aggressive at times. It was an absolute battle and I'm very happy I was able to come out on top."

It leaves the path open for Alcaraz to retain his place as the world's best player, and the 19-year-old said after his win: "First round in every tournament is never easy.

"You have to be really focused, you have to try to get a good rhythm, good feeling in the first round. I'm really happy with the performance, the level that I played, and I'm looking forward to getting better in the next round."

Ninth seed Taylor Fritz and 10th seed Hubert Hurkacz lost to Gilles Simon and Holger Rune respectively, their defeats ensuring Felix Auger-Aliassime, who overcame Mikael Ymer, and Andrey Rublev will feature in the ATP Finals.

Auger-Aliassime's victory took three hours and 30 minutes, and marked his 14th win in a row.

"Somehow I found a second wind after saving those break points at 4-1," said the Canadian.

"I played better and better, coming through the court much better, serving better. It was pretty epic. Three hours and 30 minutes on the court, quality rallies. He was making me work all the time. Definitely a win to remember."

Fifth seed Stefanos Tsitsipas was also a winner, seeing off Daniel Evans in straight sets.

Novak Djokovic and Casper Ruud were made to work hard for victory in their opening matches at the Paris Masters on Tuesday.

For Djokovic, a 10th win in a row came in an absorbing battle with his Paris-born American opponent Maxime Cressy, who displayed a typically aggressive approach on serve, with 15 aces and 10 double faults overall.

Djokovic was strong on his own delivery, however, with the Serbian losing just six points on serve and not facing a break point on his way to a 7-6 (7-1) 6-4 victory.

"I'm happy with the way I played," Djokovic said. "When chances were presented, I was able to use them, even though I did have some missed break points.

"But it was very challenging, first match with a guy who serves extremely well and strong and fast.

"He's comfortable coming to the net. It's nice to see. I think he's the only guy that really comes to the net after every first and second serve. I think it's good for tennis to see that, particularly in these modern times when most of the players are playing from back of the court. He's a very athletic guy.

"It's difficult to play him definitely in these kind of conditions where balls are flying through the court and it's quicker than it was last year. So tough to break.

"But I didn't make too many unforced errors. I'm very pleased with the way I served, with the way I was holding my service games. Just the way I felt, the way I played, it was all positive."

Third seed Ruud ground out a 6-1 7-6 (9-7) victory against Frenchman Richard Gasquet, with the Norwegian saving three of four break points in what proved to be a tightly fought contest.

Mistakes from Gasquet were ultimately costly, the veteran having 10 unforced errors in the second set compared to Ruud's two.

Seventh seed Andrey Rublev was also victorious, the Russian winning 6-2 6-3 against American John Isner, while the British duo of Jack Draper and Dan Evans progressed to the last-32 stage, beating Arthur Rinderknech and Brandon Nakashima respectively.

Rafael Nadal is not treating the Paris Masters as a chance to fight for a place at the top of the ATP rankings.

Nadal has played only once – alongside the now-retired Roger Federer at the Laver Cup – since he was knocked out in the fourth round of the US Open by Frances Tiafoe.

The 36-year-old has won two grand slam titles in 2022, at the Australian Open and the French Open, seeing him sit one clear of Novak Djokovic when it comes to the record amount of major triumphs.

Yet it is Nadal's fellow Spaniard Carlos Alcaraz, some 17 years his junior, who sat top of the world rankings ahead of the Paris Masters and the season-ending ATP Finals in Turin.

Nadal could yet end the year at the summit, but to overtake Alcaraz he would likely need a deep run at the Paris Masters – one of two ATP 1000 tournaments he is yet to win in his illustrious career – and in northern Italy.

However, Nadal, who became a father last month, says he now has a much simpler aim than becoming the best player on the planet.

"To be clear, I understand it's an interesting point because you're talking about fighting for number one, [but] I don't fight any more to be world number one," Nadal said in a press conference on Tuesday, a day ahead of his opening match against Tommy Paul in the French capital.

"I just fight to keep being competitive in every event that I play. It's something I said a long time ago, I will not fight any more to be number one.

"I did in the past. I achieved that goal a couple of times in my career and I have been very, very happy and proud about achieving that. But I am at a moment in my tennis career where I don't fight to be number one.

"I'm just excited to be here. I'm here to try my best and then accept things how they are coming. Hopefully, I will be ready, I'm going to try to be competitive. Let's see. I'm excited about it."

Having dominated the game for so long, Nadal and reigning Paris Masters champion Djokovic find themselves ranked at second and seventh by the ATP respectively.

Nadal and Djokovic are the only players in the top 10 aged over 30, with four of the other eight players aged under 25.

"My feelings are that I am proud of all the things that I was able to still be here in 2022," Nadal said, when asked what it was like to be competing against the next generation of talent.

"It's something that says that I did a lot of things well in my life, not only my tennis career. To hold the passion, to hold the love for the game and fighting spirit.

"I'm proud of that and just hope that I can enjoy the last two events of the year."

With his son not yet a month old, Nadal conceded he is missing home.

"[A] different approach to usual. It has always been difficult to leave home, to be honest," he said.

"It's quite interesting how even after two or three weeks you leave your son at home and [are] not be able to go see him. It's something quite interesting how even after only three weeks of knowing him you start missing him.

"So yeah, a new experience, all changes are difficult in his life, and you need to adapt to it."

Carlos Alcaraz views fellow Spaniard Rafael Nadal as another competitor and "not my enemy", despite the pair's battle for top spot in the world rankings.

The 19-year-old continues to break records at the top table in tennis, becoming the first teenager to be crowned world number one in the Open Era.

Alcaraz, aged just 19 years and 129 days, also set a new benchmark as the youngest number-one ranked male player in the world since rankings were published in 1973.

Those feats came after winning September's US Open, where he joined Arthur Ashe (1968) and Rod Laver (1969) as the only Open Era players to win on their first or second main-draw outing at the tournament.

Now, Alcaraz has Nadal – a record 22-time major winner – chasing him for top spot, though the youngster assures there will never be bad blood between himself and his compatriot.

"I don't see it that way," Alcaraz responded to Eurosport when asked if he was embroiled in a battle with Nadal.

"It's true, Rafa is fighting for the No.1. Some players have the same goal – to be No.1, so I need to do my best. Outside the court [Rafa and I] are colleagues, at least it's the way I see it.

"Rafa is not my enemy. I say hello, I don't see that competition. With the rest of the players, it's the same. Beyond that relationship, I'll try to keep being No.1."

While Alcaraz remains the world's top-ranked male player, he intends to savour the moment after a surreal victory at the US Open.

"It is an incredible feeling, waking up as No.1, the US Open winner. It's a dream come true," he added.

"I am enjoying this moment so far. I keep working, my life is still the same, I'm still the same kid, same player. I just keep practising, keep improving."

As the teen aims to relish topping the ranks, his next focus turns to the Paris Masters – where he faces Yoshihito Nishioka on Wednesday – with a knee injury not as serious as first thought.

"It's a little pain, but the calendar is very demanding," he said of the injury. "We are playing and travelling with barely any breaks and it's normal that we have a few pains.

"All players have them and we learn how to deal with them. I am feeling good physically and I am ready to play here in Paris and in Turin in the [ATP] Finals."