Andy Murray pulled out another narrow win on Thursday as he collected an opening round 6-7 (5-7) 6-1 6-4 comeback against Tomas Martin Etcheverry at the Indian Wells Masters.

It is the latest in a string of hard-fought wins for Murray, who has played the maximum number of sets in each of his past 10 victories dating back to the Gijon Open in October, including a pair of five-setters at the Australian Open.

Etcheverry started strong, fresh off his first ever ATP final at the Chile Open, but committed more unforced errors (21) than winners (17) in the second and third sets combined.

Fellow Great Britain representative Jack Draper was far more comfortable in his 6-1 6-1 demolition of Switzerland's Leandro Riedi, booking an all-English clash against Daniel Evans in the second round.

Former world number three Stan Wawrinka prevailed 6-4 1-6 6-1 against Aleksandar Vukic, but Vukic's Australian compatriot Thanasi Kokkanakis flew the flag with a 6-4 6-1 triumph over hometown talent Brandon Holt.

In a better result for the Americans, Mackenzie McDonald breezed past Filip Krajinovic 6-3 6-0 in just 63 minutes, and rising 20-year-old Ben Shelton had no problems in his 6-4 6-1 win over Fabio Fognini in 72 minutes.

Argentina's Guido Pella ground out 3-6 7-5 6-2 comeback in his South American clash against Brazil's Thiago Monteiro, and Germany's Jan-Lennard Struff did the same in his European showdown against France's Quentin Halys, taking it 1-6 6-3 6-3.

Former world number six Gael Monfils' return to the ATP Tour ended with a straight-sets first-round defeat to Jordan Thompson at the Indian Wells Open on Wednesday.

The 37-year-old Frenchman has not played competitively since August last year due to injury but was eliminated by Thompson 6-3 6-1 in one hour and five minutes.

The Australian was ruthless, converting four of six break points generated, while he did not offer up any to Monfils.

Monfils was rusty, committing 17 unforced errors to Thompson's five, but the veteran hit 14 winners.

Thompson's victory earns him a second-round meeting with second seed Stefanos Tsitsipas.

Brandon Nakashima won the battle of the Americans, getting past John Isner 7-6 (9-7) 6-3 in one hour and 39 minutes. Nakashima progresses to face fifth seed Daniil Medvedev.

China's Wu Yibing produced some thrilling tennis, including an astonishing volley, in his 6-7 (6-8) 6-0 7-6 (7-3) victory over Jaume Munar.

World number 38 Diego Schwartzman won 6-1 6-2 over fellow Argentinian Federico Coria, while 47th-ranked Jiri Lehecka got past Arthur Rinderknech 7-6 (7-4) 7-5.

Australia's Jason Kubler toppled Lorenzo Sonego 6-4 7-6 (7-4) in almost two hours, while 42nd-ranked Bernabe Zapata Miralles was beaten 6-2 7-6 (8-6) by Ugo Humbert.

Finland's Emil Ruusovuori triumphed with Constant Lestienne retiring down 6-4 4-1 and world number 46 Alexander Bublik was a shock casualty, going down 6-4 6-4 to Wu Ting-Lin.

Novak Djokovic's absence from the Indian Wells Open has caused a stir in US politics, and on the tennis court it is hugely significant, too.

Sport was given a jolt three years ago when Indian Wells organisers cancelled the event on the eve of action getting under way, citing one local case of COVID-19.

At that point, on March 8, 2020, there had been more than 500 confirmed cases across the United States, with 21 deaths. Soon enough, events across the globe were being postponed or scrubbed.

Coronavirus travel restrictions prevented the unvaccinated Djokovic from taking part last year, and they will keep him away again this time, despite calls from two Florida senators for the jab requirement to be lifted by President Biden to allow the Serbian into the country.

With the world number one sidelined, Daniil Medvedev and Carlos Alcaraz look likely challengers for the men's title. There have been surprise champions in recent times, with Cameron Norrie winning in 2021 and Taylor Fritz carrying off the title 12 months ago, so it would be hasty to rule out something similar.

In the women's event, there has not been a successful title defence since Martina Navratilova won in 1990 and 1991. That can partly be attributed to Serena and Venus Williams boycotting for over a decade at the peak of their powers after complaining of facing racial abuse, and in their absence no player stepped up to dominate.

Iga Swiatek triumphed in Indian Wells and Miami last season, racking up the 'Sunshine Double', and she starts as a strong favourite again, but defeat in the recent Dubai final to Barbora Krejcikova showed the 21-year-old rankings leader will not have everything her way this season.

First-round action gets under way on Wednesday, after two days of qualifying, and here Stats Perform, with Opta data, looks at what lies ahead.

After Norrie and Fritz, could there be another shock men's winner?

Djokovic has won a joint-record five Indian Wells titles, but he last featured in 2019, when he lost to Philipp Kohlschreiber in round three.

Rafael Nadal is also absent this time with a hip injury, and with Roger Federer retired this will be the second Indian Wells main draw since 2000, after 2021, to feature none of the ATP Big Three.

The Big Three was a Big Four at one point, though, and Andy Murray will be competing. It is one of the two Masters 1000 tournaments Murray has never won, along with Monte Carlo, having triumphed at the other seven. Murray has the most match wins at Indian Wells among all men competing this time, having 28 to his name, two more than John Isner who sits next on the list.

No ATP player has a better win percentage at Indian Wells than Djokovic (84.7 per cent), who has won 50 of his 59 matches, while the now-retired Federer has appeared in the most finals (nine), also winning five times, so there is no doubt the field is missing its long-time classiest acts.

Fritz last year became the first men's champion aged under 25 years old since Djokovic in 2011, and he was also the first American to take the men's title since Andre Agassi beat Pete Sampras in the 2001 final.

Medvedev has won three consecutive tournaments in the lead-up this year, tearing to titles in Rotterdam, Doha and Dubai, but the Russian has a disappointing record at Indian Wells, having yet to reach the quarter-finals in five visits.

Just four players this century, including Alcaraz last year, have reached the semi-final stage before turning 20, with Nadal, Djokovic and Murray the other three. Alcaraz is still only 19 but a shade older than Boris Becker when he was a 19-year-old champion in 1987, the youngest men's winner.

Who else might come through? It feels like a free-for-all and Felix Auger-Aliassime will be hoping for a breakthrough tournament, with the Canadian being the only member of the current ATP top 10 to have never reached a final at ATP 1000 level. It has to happen sooner rather than later, surely.

Swiatek bids to lift curse of women's champions

Ever since Navratilova's two in a row, being a back-to-back champion at Indian Wells has been beyond all singles players on the WTA side.

Indeed, the only players to reach the final the year after their title run have been Lindsay Davenport (champion 1997, runner-up 1998) and Ana Ivanovic (champion 2008, runner-up 2009).

Nine women have won twice at Indian Wells, but none have managed three or more titles. The nine are: Steffi Graf, Mary Joe Fernandez, Navratilova, Daniela Hantuchova, Serena Williams, Kim Clijsters, Victoria Azarenka, Davenport and Maria Sharapova.

A Swiatek victory would make it a club of 10, but there is a club of one when it comes to players who have captured two titles without dropping a set in either trophy run. Sharapova is the only player to pull off that feat, with her 2006 and 2013 glory runs.

Among all women, Davenport has reached the most finals (six) and won the most matches (47), with Azarenka having the most wins among active WTA players (34).

Navratilova remains the oldest champion, having won aged 34 in 1991, while Martina Hingis and Serena Williams won as 17-year-olds in 1998 and 1999.

Shocks can happen: Bianca Andreescu took the title as a wildcard in 2019, while Jenny Byrne reached the final as a qualifier in 1989, the first year the women's event was staged.

If there is to be a teenage women's finalist this time, maybe it will be Coco Gauff. The American turns 19 midway through the tournament, on March 13, and has yet to reach a WTA 1000 final, although she got to the French Open title match last year, where Swiatek inflicted a heavy defeat.

Perhaps Aryna Sabalenka can reprise her Australian Open form, having won a first major in Melbourne. But Sabalenka's record in Indian Wells is a rough one, with the Belarusian yet to go past the fourth round.

Strap in for a thrill ride. They all want to stop Swiatek, but if any player can defy history it might just be the Pole.

Novak Djokovic will not feature at the Indian Wells Open.

It was confirmed by tournament organisers on Sunday that the world number one would miss the first Masters 1000 tournament of the season.

As he is not vaccinated against COVID-19, Djokovic had applied for special permission to enter the United States, but that has seemingly been denied.

Until at least April 10, international visitors to the US must have proof of vaccination.

Djokovic, a five-time winner at Indian Wells, is also set to miss the Miami Open later in March, while his participation in the US Open could be in doubt.

The 22-time grand slam champion – who reached the semi-finals at the Dubai Tennis Championships last week – missed last year's major at Flushing Meadows due to his vaccination status. He was, however, allowed to play in this season's Australian Open.

Nikoloz Basilashvili moved into the main field following Djokovic's withdrawal.

Novak Djokovic was waiting on Saturday to learn whether he would get last-minute clearance to enter the United States to play at Indian Wells and Miami, as American tennis chiefs threw support behind the world number one.

US senator Rick Scott claimed Djokovic has been refused permission by the US Department of Homeland Security for a vaccine waiver and urged president Joe Biden to intervene on behalf of the Serbian and "fix this NOW".

Scott was backed by fellow senator Marco Rubio, who wrote on Twitter: "@DjokerNole [Djokovic] shouldn’t be prohibited from playing in the @MiamiOpen because of unconstitutional vaccine mandates.

"@POTUS [Biden] should immediately grant Djokovic a waiver to the vaccine mandate for international travellers."

Djokovic has refused to be vaccinated against COVID-19 and that stance has cost him places in two grand slam tournaments, being deported before last year's Australian Open and then denied permission to compete at the US Open later in the season.

It has also meant he has had to miss regular tour events in the United States, which demands international travellers are fully vaccinated.

Scott and Rubio are both senators for Florida, and accordingly their focus is on the Miami Open, which runs from March 22 to April 2.

More pressingly for the 35-year-old Djokovic, the Indian Wells tournament begins in the coming week, with main draw singles matches getting under way on Wednesday.

A statement posted on the US Open Twitter page confirmed support for the 22-time grand slam winner.

It read: "Novak Djokovic is one [of] the greatest champions our sport has ever seen.

"The USTA and US Open are hopeful that Novak is successful in his petition to enter the country, and that the fans will be able to see him back in action at Indian Wells and Miami."

Rafael Nadal has withdrawn from the Indian Wells Open as he continues his recovery from a hip injury.

Nadal sustained the injury during his straight-sets defeat to Mackenzie McDonald at the Australian Open in January, struggling to move around the court during the closing stages of the contest in Melbourne.

A day after that match, the Spaniard wrote on Twitter: "I have carried out medical tests after the defeat yesterday. The MRI shows a grade two lesion in the iliopsoas of the left leg. Now it's sports rest and anti-inflammatory physiotherapy. Normal recovery time six to eight weeks."

It seems that Indian Wells, the first ATP Masters 1000 event of the season, has come too soon for the 36-year-old, and it remains to be seen if he will be able to compete at the Miami Open later in March.

The tournament's director, Tommy Haas, said on Tuesday: "We wish Rafa continued healing, and hope to see him back at the BNP Paribas Open next year."

Nadal reached the final of last year's tournament at Indian Wells, where he lost to American Taylor Fritz. 

He has won three titles at Indian Wells, but the last came back in 2013.

Novak Djokovic says his participation at the Indian Wells Open and Miami Open is "out of his control".

Djokovic, who last month won the Australian Open to move level with Rafael Nadal on 22 grand slam titles, has not played since claiming the title in Melbourne.

The world number one was nursing a hamstring issue throughout the season's first major, but he confirmed at a press conference in Belgrade on Wednesday that he will return to action at the Dubai Tennis Championships next week.

Djokovic could not compete in the United States last season due to his COVID-19 vaccination status, though his brother Djordje has claimed the 35-year-old has applied for a "special permit" to enter the country.

He has received clearance from the tournament organisers to play at the two Masters 1000 events at Indian Wells and in Miami but now faces a wait to find out if the U.S. government will grant him entry.

"The process for that has started. It is out of my control now," Djokovic said.

"I'd love to play and I'm glad I received the approval of directors in Miami and Indian Wells. I hope the decision makers will give the approval."

On his progress on the injury front, Djokovic explained: "As for the injury I sustained at the Australian Open, it's healed, but I'm not 100 per cent yet.

"Things are looking very good. As a team, we made the decision to go to Dubai."

Djokovic has won the Dubai Tennis Championships five times, though the last of those titles came in 2020.

He was knocked out by Jiri Vesely in the quarter-finals last year.

Djokovic this week tied Steffi Graf on 377 weeks spent as world number one.

The outright record is set to become his next week, with Carlos Alcaraz unable to surpass him even if the young Spaniard wins the Rio Open.

Novak Djokovic is resigned to again missing marquee tournaments in the United States after confirming his stance on COVID-19 vaccinations remains unchanged.

The 21-time grand slam winner is set to sit out the Indian Wells Open and Miami Open after the US extended the requirement for all non-American nationals to be vaccinated.

Djokovic's participation at August's US Open may also be in doubt should those requirements, which are currently in place until April 10, continue to be extended.

But having also been forced to miss events in the likes of the US, Canada and Australia last year, Djokovic accepts he may have to do the same in 2023.

"I don't think there's anything official yet, so when it is we can speak about it," Djokovic told reporters on Thursday when asked about the US restrictions.

When told the rules have been certified by the US Transportation Security Administration, Djokovic replied: "I mean, if it is official then it is – what can I do? Nothing. 

"You know my position, so it is what it is. I'm hoping [to play], but if I can't go, I can't go."

Djokovic, cleared to compete in Australia this year, was speaking after defeating Quentin Halys 7-6 (7-3) 7-6 (7-5) in the last 16 of the Adelaide International.

The 35-year-old, who beat Constant Lestienne in straight sets in his opening singles match of 2023, trailed 5-2 in the first set but recovered well and then edged the second set.

"It was a great performance from my opponent today and I want to congratulate him for a great fight," Djokovic said in his on-court interview. "He played like a top-10 opponent. 

"He was serving big, hitting his spots and on a fast court like this it's tough to break, so two tie-breaks is a realistic score in today's match. I'm glad to overcome the challenge."

Djokovic will now face Denis Shapovalov, who saw off Roman Safiullin 6-4 6-3, for a place in the semi-finals.

"Denis is one of the most complete players out there," Djokovic said of his next opponent. "He has a very dynamic style of tennis. 

"I haven't played him for a while so I'm looking forward to it. Every match from here gets tougher."

Sebastian Korda also advanced on Thursday with a 6-4 6-4 victory against Roberto Bautista-Agut, while Jannik Sinner beat Thanasi Kokkinakis 7-6 (7-2) 6-4.

At the Maharashtra Open in Pune, top seed Marin Cilic withdrew from his quarter-final with Tallon Griekspoor due to a knee injury.

World number 95 Griekspoor will now face Aslan Karatsev for a place in the final.

Novak Djokovic is set to miss the Indian Wells Open and Miami Open after the United States extended the requirement for all non-American nationals to be vaccinated against COVID-19.

The 21-time grand slam winner was forced to sit out both tournaments last year, as well as other events in America and Canada, due to not being vaccinated.

Whereas many countries are relaxing vaccination requirements, meaning Djokovic is able to compete in this year's Australian Open, US travel authorities are asking for proof of being fully vaccinated against coronavirus to enter the country until at least April 10.

That will see Djokovic sit out the prestigious Indian Wells between March 6 and March 19, and the Miami Open between March 20 and April 2.

Djokovic is currently competing in the Adelaide International, where he kicked off his season with a 6-3 6-2 win over Constant Lestienne on Tuesday, ahead of beginning his quest for a 10th Australian Open crown later this month.

The Serbian was deported from Australia this time last year after his visa was revoked due to his unvaccinated status and was initially banned from entering the country for three years, but that was waived in November.

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.

Carlos Alcaraz is unsure if he will be fit for the ATP Finals after the world number one retired from the Paris Masters due to an abdominal injury.

The world number one cut short his quarter-final against Holger Rune in the French capital during a second-set tie-break after he lost the opener 6-3 on Friday.

Alcaraz stated after his retirement that it is too early to say whether he will be able to play in the prestigious season-ending tournament in Turin which starts on November 13.

The US Open champion said: "I don't know if I'll make it to the Masters Cup [ATP Finals]. Right now I have to do some tests to see how I am before going to Turin.

"I am focused on trying to improve my abdomen and trying to be 100 per cent in Turin."

The Spaniard felt there was no point in taking any chances.

He added: "At the end of the set, I felt bad. My abdomen was getting bad and I preferred to retire to see it and take care of it.

"I can't stretch. I couldn't serve well, I couldn't hit my forehand and when I turned the body I feel pain, I feel the abdomen in all the movements.

"I was playing thinking about it and feeling the pain, so it was better to withdraw."

Rune will face Felix Auger-Aliassime in his first ATP Masters 1000 semi-final, with both players finishing the season strongly.

Auger-Aliassime beat Frances Tiafoe 6-1 6-4 for his 16th consecutive win to set up a repeat of a final in Basel that the Canadian won last weekend.