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."

Carlos Alcaraz defeated Casper Ruud in four sets to win his first major at the US Open and make history in moving to the top of the ATP rankings.

Either Alcaraz or Ruud would have taken the world number one spot had they won at Flushing Meadows, and it was the 19-year-old who prevailed 6-4 2-6 7-6 (7-1) 6-3 on Sunday.

The teenager – the second-youngest New York champion of the Open Era after Pete Sampras – therefore became the youngest ever men's number one.

Alcaraz had come through five-set matches in each of the prior three rounds, and he was again worked hard by Ruud – the new number two.

Ultimately, though, the highly talented Spaniard had the staying power to win his first grand slam title, becoming the first teenager to do so since Rafael Nadal at the 2005 French Open.

Despite the draining efforts of previous nights, Alcaraz made a rapid start, quickly forging three break points in the third game of the match and taking the second of them.

Ruud did little else wrong in the first set but had to bide his time to respond, losing the opener and fending off an opportunity for a break in the second before immediately applying pressure going the other way.

The Norwegian reached an Alcaraz drop shot and lobbed his opponent before watching the backhand reply land long to lead, although three unforced errors in the next game almost let Alcaraz back in.

Instead, Ruud dug in and then profited when a sloppy Alcaraz service game allowed him to clinch the second set.

Alcaraz responded in sublime fashion, immediately piling on the pressure in the third frame and breaking down Ruud's defence with a pinpoint drop shot, yet the set was level again when he crashed into the net, with a sensational rally required to reach a tie-break.

A couple of wild Ruud strokes decided the 73-minute set in Alcaraz's favour, though, and the fifth seed went long in the fourth to set his opponent on course, with an emotional victory secured in ruthless style.

Data Slam: Marathon man Carlos crowned in New York

Only the third player to reach the US Open final after winning in five sets in each of the prior three rounds, Alcaraz avoided seeing another match going all the way – even if past results suggest that would have worked in his favour.

Regardless, Alcaraz set a new record for the most time spent on court at a major tournament. Since 1999, when this data was first available, Kevin Anderson's 2018 Wimbledon run had previously represented the benchmark.

ACES/DOUBLE FAULTS

Alcaraz – 14/3
Ruud – 4/2

WINNERS/UNFORCED ERRORS

Alcaraz – 55/41
Ruud – 37/29

BREAK POINTS WON

Alcaraz – 3/11
Ruud – 3/10

Casper Ruud is looking to follow in the footsteps of compatriot Erling Haaland by putting Norway "on the map" ahead of his US Open final appearance.

Ruud is the first Norwegian male player to appear in the championship match at Flushing Meadows, where he will play Carlos Alcaraz on Sunday, with the winner also set to become the new world number one.

Runner-up to Rafael Nadal at the French Open in June, the fifth seed would become only the fourth player from Scandinavia to top the ATP rankings should he prevail at Arthur Ashe Stadium - after Bjorn Borg, Mats Wilander and Stefan Edberg.

Ruud is not the only Norwegian sportsman to be enjoying an impressive spell of form. Indeed, compatriot Haaland has made a blistering start to life at Manchester City.

The former Borussia Dortmund striker has already scored 12 goals in his first eight appearances across all competitions - including successive hat-tricks - since swapping Bundesliga for the Premier League.

Ruud hailed Haaland's red-hot streak at City, and said he takes immense pride in representing the Norwegian flag every time he steps out onto the court.

 

The nine-time ATP title winner said: "Erling Haaland has had an unbelievable season so far. And we all hope he keeps going. It's a joy to watch him score goal after goal.

"So, he's obviously the biggest star we have in Norway at the moment, and he'll probably continue to be so for many more years. 

"I'm just focused on my career and hope I can, of course, win more tournaments in my career.

"Everywhere I go, I represent Norway - whenever I play on the ATP Tour or in a grand slam, because the Norwegian flag is always behind or in front of my name.

"So, I want to represent Norway in a good way, and put Norwegian tennis a little bit more on the map than what it's been in previous years.

"I hope I can represent Norway and the Norwegian people in a good way when I'm travelling around and playing, and hopefully winning more matches."

Carlos Alcaraz will "give everything" to win the US Open and become world number one as he prepares to face Casper Ruud in Sunday's final.

Alcaraz overcame home favourite Frances Tiafoe in a thrilling five-set semi-final at Flushing Meadows on Friday, winning 6-7 (6-8) 6-3 6-1 6-7 (5-7) 6-3.

The 19-year-old will take on Ruud for the title after the Norwegian beat Karen Khachanov in four sets earlier in the day.

The honour of becoming world number one will also be on the line for both, after current holder Daniil Medvedev was eliminated in the round of 16 by Nick Kyrgios.

Speaking on-court after his victory against a spirited Tiafoe, Alcaraz said: "To be honest in the semi-final of a grand slam you have to give everything. 

"We have to fight until the last ball. It doesn't matter if we are fighting for five hours, six hours. It doesn't matter. You have to give everything on court. Frances gave everything on court. This is amazing."

The winner of Sunday's final will seal his first career grand slam, while Alcaraz will create history if he wins as it will make him the youngest world number one since the ATP rankings began in 1973.

It will be the Spaniard's first grand slam final, while his opponent appeared in a losing effort to Rafael Nadal in June's French Open final.

Alcaraz will need to recover from his third consecutive five-set match at the US Open, but insisted he will "give everything" to win.

"It's amazing to be able to fight for big things. First time in the final of a grand slam. I can see the number one in the world, but at the same time it's so far away," Alcaraz added.

"I have one more to go against a player who is unbelievable. He deserves to play a final. He played the final of a grand slam in Roland Garros. This is my first time. 

"I'm going to give everything that I have. I will have to handle the nerves of being in a final of a grand slam, but obviously I'm really, really happy and as I said before every match, I'm going to enjoy the moment."

Frances Tiafoe insisted he will return and win the US Open "one day" after coming up short in an enthralling five-set semi-final against Carlos Alcaraz.

The home favourite won the first and fourth sets on tie breaks, only to lose the decider as his 19-year-old opponent sealed a 6-7 (6-8) 6-3 6-1 6-7 (5-7) 6-3 victory on Friday.

Tiafoe was emotional after his loss as an appreciative crowd at Flushing Meadows acknowledged his efforts.

"I gave everything I had," he said during his on-court interview. "Too good from Carlos tonight.

"I gave everything I had for the last two weeks. I came here wanting to win the US Open and I feel I let you guys down."

The 24-year-old had an impressive run in the tournament, beating higher seeds Diego Schwartzman, Rafael Nadal and Andrey Rublev to reach the final four.

"This one hurts. This one really, really hurts," he added. "Too good from Carlos, you're gonna win a lot of grand slams, you're a hell of a player, hell of a person.

"I'm happy I got to share the court and such a big stage with you. 

"I'm going to come back and I will win this thing one day. I'm sorry guys."

Alcaraz will face Casper Ruud in Sunday's final after the Norwegian beat Karen Khachanov in four sets in Friday's other semi-final.

Casper Ruud called facing off against Carlos Alcaraz in the US Open final with the world number one ranking also on the line "the ideal situation" after successfully navigating the challenge of Karen Khachanov in Friday's semi-final.

Ruud needed just over three hours to defeat the Russian 7-6 (7-5) 6-2 5-7 6-2, becoming the first Norwegian man to ever reach the US Open final.

With Alcaraz outlasting Frances Tiafoe in a five-set battle of attrition, the 23-year-old Ruud and 19-year-old Alcaraz will both be seeking their first ever grand slam title in Sunday's decider.

Speaking to the media before Alcaraz's match, Ruud said he hoped it would be the Spaniard who made it through so they could play off for the number one ranking.

"I think what's most fair is if we both reach the final and whoever wins the final reaches the world number one," he said. "That would be, I think, the ideal situation."

He then dove into some strategy about what it takes to beat the teenage sensation, saying "I will seek my revenge" for the two losses he has suffered at the hands of Alcaraz in Miami and Marbella this season, both in straight sets.

"I think if I want to beat Carlos, I'll need to play very precise with all the shots that I hit," he said. "Especially trying to keep him a little bit further back in the court, to play with good depth and length on all my shots.

"If he steps in, he can do anything with the ball. He can rip a winner. He also has great touch with the dropshot. I think he has one of the best dropshots on tour. He can do both shots back and forth, it will sort of get you off guard sometimes with the dropshot.

"If you play with good depth and good length, it's tougher to hit dropshots. That will be something that I will try to focus on.

"We're playing for the tournament and also to be world number one – of course, there will be nerves and we will both feel it. 

"I hope it will be a good match. He has beaten me a couple times and I will seek my revenge."

One advantage Ruud will have over Alcaraz is the fact that this is not his first rodeo, having made the French Open final this year where he lost to Rafael Nadal, but he feels that experience can only help him.

"I mean, Roland Garros, the final, [Nadal] obviously gave me a good beating," he said. 

"After the final I said, If I ever reach one again, I hope it is not Rafa on the other side of the court in Roland Garros because it's sort of an impossible task I think for any player. I'm happy that it's not Rafa on clay.

"I hope it can have prepared me a little bit. At least I know a little bit of what I'm facing when I'm stepping on the court, seeing the trophy on the back of the court, seeing tons of celebrities. 

"Even in Roland Garros, there was royal families there watching. That was a little bit of a new experience for me – I hope I can be more ready for that on Sunday."

Carlos Alcaraz is having a remarkable breakthrough season, and he has a chance to put an exclamation point on it after defeating Frances Tiafoe 6-7 (6-8) 6-3 6-1 6-7 (5-7) 6-3 in Friday's US Open semi-final.

It will be 19-year-old Alcaraz's first appearance in a grand slam final, and with a win against Casper Ruud he will also become the youngest world number one in men's tennis history, beating out Lleyton Hewitt (20 years and nine months old) by over a year.

In a tight first set where both players failed to capitalise on their break point opportunities, Tiafoe saved an Alcaraz set point to force the tiebreaker, where he would finally secure the opening frame with the fourth set point of his own.

With such fine margins deciding the outcomes, some sloppy serving would flip the script in the second set. After Tiafoe had no double faults in the first and Alcaraz had three, it was Alcaraz cleaning things up to post zero for the rest of the match.

Meanwhile, Tiafoe had a pair of costly double faults in the second, which ultimately led to the only break in the set, as Alcaraz converted one of his four opportunities, while saving the three break points he faced.

Tiafoe's vaunted serve continued to meltdown in the third frame, dropping his first-serve accuracy from 67 per cent to 30 per cent, which led to him winning just 35 per cent (seven-of-20) of his service points as Alcaraz lifted.

Alcaraz needed only 34 minutes to wrap up the third set, thanks in large part to Tiafoe committing 12 unforced errors with only six winners, as the Spaniard finished the set with just one ace and four winners.

As the double faults and unforced errors faded away, Tiafoe rediscovered the kind of form and fight that saw him stylishly handle the challenge of Rafael Nadal earlier this week. Tiafoe and Alcaraz traded breaks in four consecutive games in the fourth set, with the American having to save a match point to force another tiebreaker where he would prevail.

But Alcaraz would not be denied, grabbing a crucial break in the opening game of the fifth set, and when Tiafoe snatched it back, his joy was short-lived as Alcaraz re-broke in the very next game to-love, and once more to finish the match.

Data Slam: Alcaraz way ahead of schedule

If he defeats Ruud in the final, Alcaraz will become the second-youngest men's US Open champion ever at 19 years and four months old, trailing only Pete Sampras (19 years, 28 days). 

Both the third and fourth-youngest champions – Oliver Campbell (19 years, six months) and Richard Sears (19 years, 10 months) – won their titles in the late-1800s. 

ACES/DOUBLE FAULTS

Alcaraz - 6/3

Tiafoe - 15/6

WINNERS/UNFORCED ERRORS

Alcaraz - 59/37

Tiafoe - 51/52

BREAK POINTS WON

Alcaraz - 9/20

Tiafoe - 3/7

Casper Ruud is through to his second career grand slam final after emerging triumphant 7-6 (7-5) 6-2 5-7 6-2 in Friday's semi-final against Karen Khachanov.

Ruud, 23, will be searching for his first major title after losing to Rafael Nadal in the French Open decider in June, and he will face the winner between Carlos Alcaraz and Frances Tiafoe.

By defeating Khachanov, Ruud has now won 13 of his past 15 matches, and while it is usually his return game that dictates his effectiveness, against the Russian it was about his ability to win points on serve.

A tight first set saw the two players exchange breaks, securing two each before Ruud took the only point against serve in the tie-break

Whatever he figured out in the breaker carried into the second set, as he did not drop a single point (16-of-16) while serving in the frame. In a near-perfect set, Ruud tallied 12 winners and two unforced errors, while Khachanov shot himself in the foot with three double faults.

With his back to the wall, Khachanov responded well in the third, finding his range with his ground strokes to post 15 winners and four unforced errors, while winning 83 per cent (24-of-29) of his service points.

But that would be his last piece of resistance before Ruud took over down the stretch, rattling off five consecutive games in the fourth set to turn a 0-1 deficit into a 5-1 lead, serving it out to love.

Data Slam: Ruud reaches new heights

Ruud is guaranteed to leave the US Open with a new career-high ranking, and with a win in the final, he will become world number one first the first time.

The only player with a chance to overtake him this week in the race for the number one spot is Alcaraz.

WINNERS/UNFORCED ERRORS

Ruud – 52/34

Khachanov – 43/39

ACES/DOUBLE FAULTS

Ruud – 10/1

Khachanov – 15/3

BREAK POINTS WON

Ruud – 6/13

Khachanov – 3/5

A minute's silence will be held at the US Open, while the ATP and WTA Tours paid tribute following the death of the Queen.

Buckingham Palace confirmed on Thursday the UK's longest reigning monarch had passed away peacefully at the age of 96, with members of the Royal Family travelling to Balmoral to be by her side.

The US Open will pay tribute to Her Majesty with a photo montage and moment of silence ahead of the first women's singles semi-final between Ons Jabeur and Caroline Garcia at Arthur Ashe Stadium.

Meanwhile, the ATP and WTA tweeted: "We are saddened to hear of the passing of Her Majesty Queen Elizabeth II. We are grateful for her contributions to tennis, and our thoughts and condolences are with the British Royal Family."

Billie Jean King also took to social media to share a photo of her meeting the Queen at Wimbledon in 2010, while paying her own tribute to a "respected leader around the world."

The 39-time major winner posted: "For 70 years, her leadership, impact, and influence on the United Kingdom and the entire global community has been immense. I met her in 2010 at Wimbledon, and it was a special moment for me.

"She was the longest reigning British monarch in history, the only woman from the Royal Family to serve in the armed forces, and a respected leader around the world. She earned her place in history, and she will be missed."

Carlos Alcaraz believes New York provides a perfect stage for the first grand slam semi-final of his career after the Spanish teenager edged a late-night thriller with Jannik Sinner.

In the last of the men's singles quarter-finals at Flushing Meadows, Alcaraz prevailed in the latest finish on record at the tournament, sealing a 6-3 6-7 (7-9) 6-7 (0-7) 7-5 6-3 victory at 02:50 local time on Thursday.

Sinner was left crestfallen, saying the defeat was in his "top list" and would hurt "for quite a while". He had served for the match in the fourth set but could not see it out, the 21-year-old seeing Alcaraz exact revenge for defeat in the fourth round at Wimbledon.

At the age of 19, Alcaraz is leading the men's tour for wins this season, one short of reaching 50 for the year, and the Arthur Ashe Stadium crowds have taken him to their hearts.

He is the youngest men's grand slam singles semi-finalist since Rafael Nadal marched to the 2005 French Open title, and the youngest man to reach the last four at the US Open since Pete Sampras in 1990, also on a run to the trophy.

The clash with Sinner was an epic that spanned five hours and 15 minutes, yet Alcaraz said afterwards: "During the whole match, I feel great physically.

"I feel great to be in my first semi-final in a grand slam. I feel better reaching the semi-final here in the US Open. This tournament is amazing. The crowd is amazing, I would say the best in the world.

"The energy I receive in this court at 3am, it was unbelievable. Probably in other tournaments, other places, everybody would have gone to their house to rest. But they keep in the court, supporting me. It was unbelievable.

"I feel great to have a semi-final here in the US Open."

Frances Tiafoe awaits him, after the American took down Andrey Rublev in straight sets on Wednesday, following up his fourth-round win over Rafael Nadal with another accomplished display. The crowd will likely have split allegiances for that semi-final on Friday.

"It's going to be really, really tough," said Alcaraz. "Everybody knows the level of Frances. He has beaten Rafa Nadal, Rublev in three sets. He's playing unbelievable right now, high in confidence.

"He loves the crowd. He loves this court. I'm going to have to play my best. But right now I'm thinking about this match. I'm enjoying this moment. I have a day of rest to think about the semi-final."

Alcaraz also said the possibility of becoming world number one did not cross his mind during the Sinner battle. He would hit the top spot by winning the title, and would also be assured of number one by reaching the final if Casper Ruud loses to Karen Khachanov in the other semi-final.

Sinner can only dream of reaching such heights for now, although his time may come.

He has a 9-20 losing record against top-10 opponents after this setback, but wins over Alcaraz at Wimbledon and later at a smaller event in Umag, Croatia, suggest his game is developing nicely.

The Italian had a strong tournament in New York but was left with regrets after failing to see this one through.

"I've had some tough losses, for sure. This is in the top list," Sinner said. "I think this one will hurt for quite a while.

"But tomorrow I wake up, or today I wake up, trying to somehow take only the positives, trying to take away the other part.

"But it's tough, for sure. In my next tournament I will play Davis Cup. Before, I want to practise again in the best possible way, trying to improve. Maybe next time I can win this, no?"

Carlos Alcaraz survived a Jannik Sinner match point before going on to clinch his maiden grand slam semi-final berth with an epic five-set victory in more than five hours at the US Open.

The Spanish third seed triumphed 6-3 6-7 (7-9) 6-7 (0-7) 7-5 6-3 in the latest-ever finish at the US Open, officially ending at 2:50am Thursday local time.

The match was within nine minutes of being the longest ever in US Open history, the record held by Michael Chang and Stefan Edberg from 1992 of five hours and 26 minutes.

The 19-year-old fought back from a Sinner match point in the fourth set, rallying to force a fifth, where he broke the Italian 11th seed in the eighth game before serving it out for victory.

Alcaraz blew opportunities too, including five set points in the second set, while he failed to serve out the third set before Sinner won the tie-break 7-0 to take all the momentum into the fourth.

But the emerging Alcaraz showcased his doggedness even after falling a break behind in the fourth, to set up a semi-final date against 22nd seed Frances Tiafoe, who has beaten Andrey Rublev and Rafael Nadal in his past two matches.

The win also means Alcaraz is a step closer to claiming the world number one ranking for the first time, which will be achieved if he wins the title, or even if he makes the final and fifth seed Casper Ruud does not.

Data slam: Alcaraz cannot help Nadal comparisons

Alcaraz, 19, is not fond of comparisons to compatriot Rafael Nadal, but his victory means he becomes the youngest grand slam semi-finalist since the 22-time major winner in 2005. 

Little separated Alcaraz and Sinner who will both have won huge admiration, but the Italian's 63 unforced errors compared to the Spaniard's 38 was an outlier.

ACES/DOUBLE FAULTS

Alcaraz – 5/5
Sinner – 8/11

WINNERS/UNFORCED ERRORS

Alcaraz – 58/38
Sinner – 61/63

BREAK POINTS WON

Alcaraz – 11/26
Sinner – 7/16

Frances Tiafoe celebrated a "crazy" win after his defeat of Andrey Rublev saw him become the first American man to reach the US Open semi-finals in 16 years.

Tiafoe stunned Rafael Nadal on Monday and followed up that career-high by reaching the last four of a major for the first time on Wednesday.

Ninth seed Rublev, who has lost all six of his grand slam quarter-finals, stood in his way but Tiafoe prevailed 7-6 (7-3) 7-6 (7-0) 6-4 at Arthur Ashe Stadium.

The 24-year-old is the first male player from the United States to reach a semi-final at Flushing Meadows since Andy Roddick in 2006.

Roddick went on to reach the final that year, though fell short of winning a second US Open final as he lost to Roger Federer.

This time around, Tiafoe will face either Jannik Sinner or Carlos Alcaraz, who has a shot at becoming the new world number one. 

"This is wild, this is crazy," world number 26 Tiafoe said after his win. 

"I had the biggest win of my life 48 hours ago and coming out and getting another big win. Andrey's a hell of a player, and to back it up, that's huge. It's tough to turn the page, but I did and now I'm in the semis.

"I feel so at home on courts like this. This court is unbelievable. [The crowd] gets so far behind me, I want to play, I want to give my best. I always find a way somehow on this court, I always play some great tennis and I have been. Let's enjoy this, we've got two more."

Tiafoe might well be the only home hope left for the American crowd to back in New York come the end of play on Wednesday, with Jessica Pegula facing the daunting task of taking on world number one Iga Swiatek in the women's singles.

Nick Kyrgios claims all tournaments other than grand slams are a "waste of time" following his US Open quarter-final exit to Karen Khachanov on Tuesday.

The in-form 2022 Wimbledon runner-up's run at Flushing Meadows, which included knocking out defending champion Daniil Medvedev, was ended by Khachanov 7-5 4-6 7-5 6-7 (3-7) 6-4.

Kyrgios had been in career-best form, winning more matches than any other player on the ATP Tour since his Wimbledon final defeat to Novak Djokovic, but will need to wait until January for another crack at a major, at his home Australian Open.

The 27-year-old has spoken about his renewed level of focus since reaching the Wimbledon final and said he was "devastated" by his US Open loss, smashing a racquet after the match.

"I honestly feel like s***," he said. "I feel like I've let so many people down.

"I feel like these four tournaments are the only ones that are ever going to matter. It's just like you got to start it all again. I have to wait until the Australian Open. It's just devastating. It's heart-breaking.

"I don't even really care about any other tournament. I feel like at the grand slams, now having success at a grand slam, it's just like no other tournament really matters.

"It's like you get better, you get worse, then at a grand slam none of it matters. You either win or lose. People don't really care if you got better on the day or you lost 6-4 in the fifth or played one of the best matches of the tournament. You lost.

"That's all people remember at a grand slam, whether you win or you lose. I think pretty much every other tournament during the year is a waste of time really. You should just run up and show up at a grand slam. That's what you're remembered by."

Kyrgios allayed concerns over a knee injury at the end of the first set that he said settled, stating that he started "flat" and felt Khachanov's serve was too good, particularly in key moments.

"All credit to Karen, he's a fighter. He's a warrior," he said.

"I thought he served really good today. Honestly probably the best server I played this tournament, to be honest, the way he was hitting his spots under pressure."

The triumph marks 29th seed Khachanov's first major semi-final having fallen in the quarter-finals at majors twice previously.

"It's like one more step forward," the Russian said. "I'm really, really happy I could do it.

"I had to face and to beat Nick, who is playing some of the best tennis again. It obviously was a tough match to approach. I made my first semi-final, so it's pretty simple in my head. I'm just really happy."

Karen Khachanov reached a grand slam semi-final for the first time as he ended Nick Kyrgios' US Open run in a five-set three-and-a-half-hour epic on Tuesday evening.

The 27th-seeded Russian, who had fallen in the quarters at the 2019 French Open and 2021 Wimbledon Championships, prevailed 7-5 4-6 7-5 6-7 (3-7) 6-4 over the Australian 23rd seed to set up a semi-final date with fifth seed Casper Ruud.

The result ended the run of Kyrgios who had won the most matches on the ATP Tour since losing July's Wimbledon final to Novak Djokovic. Kyrgios had taken out reigning champion and top seed Daniil Medvedev in the fourth round.

The 26-year-old Russian broke Kyrgios' serve in the 12th game of the first set with an exquisite lob clinching the frame where the Australian's second serve let him down.

Kyrgios responded to win the second set, despite a medical timeout for treatment on his left leg after exclaiming "I can't walk", breaking the Russian early and hitting 12-5 winners.

Khachanov claimed the third set in similar circumstances to the first, with Kyrgios failing to hold his serve in the 12th game, this time producing unforced errors in the key moments.

The two players traded breaks early in the fourth set but Kyrgios would force a fifth set after a dominant tie-break where he converted his second set point.

The Russian got an early break in the fifth set, while Kyrgios failed to convert break points in Khachanov's next two service games and he would not recover.

Data Slam: Khachanov cool under pressure

Little split these two players in an extremely tight quarter-final, with 31-30 aces edged by Kyrgios, but many of Khachanov's came at crucial moments under pressure.

Kyrgios' flamboyance and shot-making ability was on show, but his inability to convert break points, along with 58 unforced errors, ultimately proved the difference, taking two of nine.

ACES/DOUBLE FAULTS

Kyrgios – 31/5
Khachanov – 30/3

WINNERS/UNFORCED ERRORS

Kyrgios – 75/58
Khachanov – 62/31

BREAK POINTS WON

Kyrgios – 2/9
Khachanov – 4/8

Karen Khachanov reached a grand slam semi-final for the first time as he ended Nick Kyrgios' US Open run in a five-set three-and-a-half-hour epic on Tuesday evening.

The 27th-seeded Russian, who had fallen in the quarters at the 2019 French Open and 2021 Wimbledon Championships, prevailed 7-5 4-6 7-5 6-7 (3-7) 6-4 over the Australian 23rd seed.

The result ended the run of Kyrgios who had won the most matches on the ATP Tour since losing July's Wimbledon final to Novak Djokovic. Kyrgios had taken out reigning champion and top seed Daniil Medvedev in the fourth round.

The 26-year-old Russian broke Kyrgios' serve in the 12th game of the first set with an exquisite lob clinching the frame where the Australian's second serve let him down.

Kyrgios responded to win the second set, despite a medical timeout for treatment on his left leg after exclaiming "I can't walk", breaking the Russian early and hitting 12-5 winners.

Khachanov claimed the third set in similar circumstances to the first, with Kyrgios failing to hold his serve in the 12th game, this time producing unforced errors in the key moments.

The two players traded breaks early in the fourth set but Kyrgios would force a fifth set after a dominant tie-break where he converted his second set point.

The Russian got an early break in the fifth set, while Kyrgios failed to convert break points in Khachanov's next two service games and he would not recover.

Data Slam: Khachanov cool under pressure

Little split these two players in an extremely tight quarter-final, with 31-30 aces edged by Kyrgios, but many of Khachanov's came at crucial moments under pressure.

Kyrgios' flamboyance and shot-making ability was on show, but his inability to convert break points, along with 58 unforced errors, ultimately proved the difference, taking two of nine.

ACES/DOUBLE FAULTS

Kyrgios – 31/5
Khachanov – 30/3

WINNERS/UNFORCED ERRORS

Kyrgios – 75/58
Khachanov – 62/31

BREAK POINTS WON

Kyrgios – 2/9
Khachanov – 4/8

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