David Goffin got off the mark with his first victory of 2023 with a straight-sets win over fifth seed Alexander Bublik in round one of the Auckland Open.

The Belgian lost both matches at the inaugural United Cup last week, but he saw off Bublik 6-3 6-4 in 74 minutes to reach the last 16 in New Zealand.

Another seeded player fell at the first hurdle on Monday as Adrian Mannarino lost 6-4 7-6 (7-4) to J.J. Wolf.

Richard Gasquet advanced with a 6-3 6-1 win over wild card Kiranpal Pannu, while Jenson Brooksby beat Fabio Fognini 6-7 (2-7) 6-1 6-3 and will now face Diego Schwartzman.

At the Adelaide International 2, fifth seed Dan Evans suffered a 7-5 7-5 defeat to Mackenzie McDonald.

Fellow seeds Alejandro Davidovich Fokina and Miomir Kecmanovic overcame Brandon Nakashima and Kyle Edmund respectively.

Rafael Nadal will return to the Dubai Tennis Championships next month, 15 years after he last competed in the competition.

Victorious in 2006, Nadal has not played at the event since 2008 but will make his return when the competition begins on February 27.

Ranked second in the world, Nadal's campaign in the United Arab Emirates will take place after the first grand slam of the year in Melbourne, where he is bidding to retain the Australian Open title he won 12 months ago.

Since he last featured at the Dubai Tennis Championships, Nadal has established himself as one of the sport's greatest players, something Colm McLoughlin, executive vice chairman and chief executive of the tournament's sponsor Dubai Duty Free, was keen to highlight.

"As one of the most instantly recognisable personalities in global sport, and one of the most decorated players to ever grace the game, we are absolutely thrilled to welcome Rafa back to the Dubai Tennis Championships after 15 years," he said.

"The last time Rafa played in Dubai, he had won three grand slams. He returns having amassed more grand slam titles than any other male player in history."

The 36-year-old followed last year's triumph in Australia with victory in the French Open for a record 22nd grand slam title.

Andrey Rublev won last year's Dubai Tennis Championships title, beating Jiri Vesely 6-3 6-4 in the final.

Novak Djokovic battled back from match point down to win his first tournament of the year with a thrilling victory over Sebastian Korda in the final of the Adelaide International 1.

The 35-year-old certainly did not have it all his own way as the American gave a brilliant account of himself, but Djokovic had the nous to get his 92nd tournament win over the line 6-7 (8-10) 7-6 (7-3) 6-4.

During a gruelling encounter that lasted three hours and 11 minutes, there was precious little to separate them with only three breaks of serve in total.

Two of those came in the first set. Korda had the initial advantage, a gorgeous backhand down the line punishing a stranded Djokovic, but he instantly hit back as his opponent found the net with what looked a routine shot.

The subsequent tie-break was similarly neck-and-neck until a Djokovic slice went long and then he put another return into the net to hand Korda the set, the Serbian venting his frustration at his team at the interval.

Korda then had the opportunity to win the championship towards the end of the second set, but Djokovic worked the situation bravely before a smashed volley emphatically saved him, with another tie-break soon arriving.

Djokovic surged into a 6-1 lead and eventually grasped his third set point, and from then on there only looked like being one winner, with the 21-time grand slam champion pouncing on his first break point in the decider to take the win.

This tournament was of course Djokovic's first in Australia since being deported ahead of the 2022 Australian Open due to his unvaccinated status.

Upon his return to the country where he has won nine grand slams, Djokovic was feeling the love.

"It's been an amazing week and [the fans] made it even more special. For me to be standing here is a gift, definitely," Djokovic said in the trophy ceremony.

"I gave it all today and throughout the week in order to be able to get my hands on the trophy.

"The support that I've been getting in the past 10 days is something that I don't think I've experienced too many times in my life, so thank you so much [to] everyone for coming out every single match."

Success ensured Djokovic levelled Rafael Nadal (92) for fourth-most men's singles titles in the Open Era, with only Ivan Lendl (94), Roger Federer (103) and Jimmy Connors (109) winning more.

Tallon Griekspoor clinched his first ATP Tour title by fighting back to beat Benjamin Bonzi 4-6 7-5 6-3 in Saturday's final at the Tata Open Maharashtra in Pune.

Both Griekspoor and Bonzi were taking part in their first Tour-level final after strong campaigns in India, and it was the Frenchman who took the opener, holding firm before clinching the vital break in the 10th game.

The crucial game came at the same point in the second set, with Griekspoor converting his second break point of a back-and-forth game to snatch the momentum before levelling things up.  

Griekspoor was on top from there, breaking again in the third game of a tight decider – in which he was forced to save a further two break points – before repeating the trick to finish the job.

Asked how he mustered his response after a disappointing start, the Dutchman said: "I don't know. I think even in the first set I played well, I just played two bad games and made it hard for myself.

"All I did was keep fighting for every point, keep trying to play my best tennis. It worked out well, it was all good in the end.

"There were more nerves than usual, but it wasn't too bad. We both played really well with our service games. The nerves are always there, but I'm pleased with how I handled it today." 

Novak Djokovic clinched a 6-3 6-4 win against Daniil Medvedev in the Adelaide International semi-finals on Saturday, overcoming an injury scare to tee up a final meeting with Sebastian Korda. 

Djokovic made a fast start by breaking in Medvedev's second service game, though there was concern when the 21-time grand slam winner required a lengthy medical timeout at 5-2 up in the opening set.

With Djokovic's long-awaited return to the Australian Open just over a week away, the sight of the Serbian clutching his left hamstring was an unwelcome one, but he eventually returned to the court to take the opener 6-3.

Having shown his staying power in a low-key start to the second set, Djokovic claimed the vital break following some excellent work at the net in the seventh game, though Medvedev was ultimately the master of his own downfall after producing a double fault at break point.

Djokovic then faced break point in the next game as Medvedev desperately tried to claw his way back into the contest, but a huge second serve eventually saw him hold off the Russian, who was unable to trouble him thereafter.

Speaking court-side after teeing up his 131st ATP Tour final, Djokovic played down concerns over his hamstring issue, saying: "Thankfully, it was nothing too serious. 

"If it was, I wouldn't have been able to continue. I just tried with a medical timeout and some anti-inflammatories and I just settled in.

"The more the match went on, the more my hamstring was warmer, I guess, and bothering me less. So hopefully tomorrow it will be okay."

Asked whether he considered retiring in order to save himself for the first grand slam of the year, Djokovic added: "I can't say it didn't cross my mind today on the court. 

"But you just can't calculate on the court. At this stage of my career, every match counts, every match is a present in a way, so I just try to give my best and win wherever I am."

Yoshihito Nishioka also struggled with an injury in the day's other semi-final, but the world number 36 was less fortunate than Djokovic as he retired midway through his clash with Korda.

Korda took a close opening set via a tie-break after Nishioka ranted at a second umpire in as many days, raging when a point was replayed following an error from a line judge.

Nishioka saw his serve broken in the first game of the second set before calling a medical timeout after seeming to struggle with a leg injury, and his subsequent retirement ensured Korda advanced to his fifth ATP Tour final.

Lucia Bronzetti downed Valentini Grammatikopoulou to seal Italy's place in the final of the inaugural United Cup.

Despite losing to Poland in their City Final in Brisbane, Italy claimed a place in the Sydney play-offs as the best-placed runner-up.

Having led 2-0 overnight, Italy were pegged back by Stefanos Tsitsipas' battling 4-6 7-6 (7-2) 6-4 win over Matteo Berrettini.

That put the pressure on Bronzetti's meeting with world number 199 Grammatikopoulou.

Yet despite losing her two previous matches against Grammatikopoulou, world number 54 Bronzetti made no mistake, cruising to a 6-2 6-3 victory.

Italy will now face the United States, who beat Poland 5-0 in their semi-final, in the final on Sunday.

Carlos Alcaraz has pulled out of the Australian Open after suffering a leg muscle injury in training.

The 19-year-old world number one won the US Open last September and would have been among the favourites at Melbourne Park and one of the players capable of challenging nine-time champion Novak Djokovic.

However, Alcaraz announced he would not be fit enough in time to feature, with a problem with a hamstring leaving him sidelined for the tennis season's opening grand slam.

He wrote on Instagram: "When I was at my best in preseason, I picked up an injury through a chance, unnatural movement in training.

"This time it's the semimembranosus muscle in my right leg. I'd worked so hard to get to my best level for Australia but unfortunately I won't be able to play the Care A2+ Kooyong or the Australian Open.

"It's tough, but I have to be optimistic, recover and look forward. See you in 2024 @australianopen."

The Kooyong event is an exhibition tournament ahead of the major, and it is the Australian Open where his presence will be most sorely felt.

Alcaraz has emerged as the pick of the new generation of players, with his high-intensity game winning him a legion of supporters and bringing him a host of titles already.

He earned $7.6million and picked up five singles titles last season, including the first grand slam crown of his career in New York, ending the year with a 57-13 win-loss record and the ATP top ranking.

Alcaraz's compatriot Rafael Nadal is the defending champion in Melbourne, while Djokovic returns this year after being deported from Australia 12 months ago amid a vaccination saga.

Iga Swiatek was in tears after losing to Jessica Pegula as the United States took a 2-0 United Cup semi-final lead over Poland, while Italy moved into command against Greece on Friday.

World number one Swiatek was beaten 6-2 6-2 by the impressive Pegula in just 71 minutes at Ken Rosewall Arena.

Swiatek got the better of Pegula three times last year, but the American made light work of seeing off the three-time grand slam champion this time around to put USA in front.

Pegula struck 21 winners, attacking the Swiatek serve in a commanding display just over a week before the Australian Open gets under way.

Swiatek's emotions came out after she was emphatically defeated by the world number three in Sydney.

Pegula said: "I played her today, conditions are totally different than anywhere else I played her. Obviously maybe I had a little bit of an advantage, they just flew in yesterday.

"Definitely the fastest conditions I have played her [in]. Every other place I've played her has been pretty slow. I think that favoured me a lot, and I was able to use that to my advantage and play a really super clean match.

"I think I just was able to execute my game plan probably better than I have previous times."

Frances Tiafoe backed up Pegula's win by beating Kacper Zuk, who replaced the unwell Daniel Michalski, 6-3 6-3.

That ensures Taylor Fritz has a chance to put the United States into the final if he beats Hubert Hurkacz on Saturday.

Italy are in control of the other semi-final following victories for Martina Trevisan and Lorenzo Musetti.

Trevisan upset Maria Sakkari 6-3 6-7 (4-7) 7-5 before Musetti outclassed Stefanos Sakellaridis, winning 6-1 6-1.

Novak Djokovic set up a semi-final clash with Daniil Medvedev at the Adelaide International with a straight-sets win over Denis Shapovalov.

Shapovalov wilted under pressure on his serve at the end of both sets as Djokovic claimed a 6-3 6-4 victory, though he felt the encounter was closer than the score suggested.

"The scoreline doesn't give you the right idea of what happened in the match, almost two hours for two sets, it was such a close match," Djokovic said in his on-court interview.

"I just managed to stay mentally composed in the right moments and play my best tennis."

He wrapped up the win with a backhand volley after a Shapovalov double fault handed Djokovic the key break, teeing up a meeting with Medvedev, whom he beat in the 2021 Australian Open final before losing to the Russian in the US Open showpiece later that year.

Fellow former world number one Medvedev cruised to a 6-3 6-3 win over compatriot Karen Khachanov.

Medvedev trailed 3-1 in the second set but reeled off five straight games to surge into the last four.

"We didn't play since 2019, that's pretty long," Medvedev said of his reunion with Khachanov. 

"Hopefully we can play more matches at later stages of tournaments. It's never easy, I'm happy that I managed to really raise my level, especially at the end of both sets, and I'm really happy to be through to the semis."

Sebastian Korda continued his superb run with a straight-sets win over Jannik Sinner, who was bothered by a hip issue that later forced him to pull out of his doubles match.

Korda pulled away in the second set after a tight first to win 7-5 6-1 and has won 11 of his 14 matches since the start of October.

He will take on Yoshihito Nishioka, who overcame home hope Alexei Popyrin 7-6 (7-4) 6-7 (8-10) 6-2, for a place in the final.

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.

Michael Smith considered himself darts' equivalent of Andy Murray after beating Michael van Gerwen to land his maiden world title triumph.

The 32-year-old claimed a 7-4 victory in Tuesday's thrilling PDC World Championship final at Alexandra Palace in London, which included a perfect nine-dart leg in the second set.

Smith, who had lost eight successive major finals before his breakthrough triumph at the Grand Slam of Darts in November, is now the world number one as a result of his victory.

He is just the 11th winner of the tournament in its 30-year history, with Phil Taylor having won it 14 times prior to his retirement in 2018.

And Smith believes there are parallels to tennis star Murray's memorable 2012 US Open final win against Novak Djokovic – his first of three grand slam triumphs after four final defeats.

"I'm like the Andy Murray of darts," Smith told Sky Sports. "He has come through with these three amazing players in [Roger] Federer, [Rafael] Nadal and Djokovic.

"He managed to get Queen's and then won the US Open, Wimbledon, and Wimbledon again, and he had to work hard for that. 

"I know he got to world number one and then, unluckily for him, he had his injuries, although it didn't cost him his career as he's still playing now."

Five different players have now had their name on darts' biggest trophy in the past six years, with Peter Wright the only multiple winner in that period. 

"Back in the day it was Phil Taylor and someone who pushed him," Smith said. "Barney [Raymond van Barneveld] was there, Adie [Adrian Lewis] pushed him for a bit as well. 

"Then Michael [Van Gerwen] came along, then you've got Gary Anderson, Peter Wright and Gez [Gerwyn Price].

"You've got really unbelievable players where anyone in the top 32 can win a TV title and it's not just Phil Taylor dominating the sport. The sport is wide open now, which is good."

Smith averaged 100.71 across the 11 sets, with that the highest in the World Championship final since Van Gerwen's 102.88 three years ago when losing to Wright (102.79).

Iga Swiatek dragged Poland into the semi-finals of the United Cup with inspired performances in her singles and doubles matches against Italy.

Poland trailed after Lorenzo Musetti and Matteo Berrettini secured wins against Daniel Michalski and Hubert Hurkacz respectively, only for Swiatek and Magda Linette to level things with respective singles victories over Martina Trevisan and Lucia Bronzetti.

That sent the Brisbane city final to a decider in the mixed doubles, which Swiatek and Hurkacz won with ease 6-1 6-2 against Musetti and Camilla Rosatello, though there was a pause in the second set to dry rainfall on the court.

Despite defeat, Italy also advanced to the final four as the city finals loser with the best record.

It was more routine in Sydney as the United States eased to a 4-1 win against Great Britain.

Madison Keys came from a set down to beat Katie Swan, while Jessica Pegula eased past Harriet Dart 6-2 6-0 after Cameron Norrie had defeated Taylor Fritz in three sets.

Despite going a set behind, Frances Tiafoe came back to beat Dan Evans 3-6 7-5 6-3 to clinch the win for his country, before Pegula and Fritz added some gloss after beating Dart and Evans in the mixed doubles.

The third city final in Perth included a thriller as Greece's Stefanos Tsitsipas beat Borna Coric 6-0 6-7 (4-7) 7-5. Donna Vekic had no trouble getting Croatia on the board as she eased past Despina Papamichail 6-2 6-0.

Maria Sakkari put Greece 2-1 ahead when she beat Petra Martic 6-3 6-3, but Borna Gojo defeated Stefanos Sakellaridis in straight sets to make it 2-2.

However, Greece secured the win and their place in the last four after the pairing of Sakkari and Tsitsipas saw off Martic and Gojo 7-6 (8-6) 6-4.

Greece will take on Italy in the semi-finals, while Poland face the USA, with both taking place in Sydney on Friday.

Daniil Medvedev cruised into the quarter-finals of the Adelaide International with a straight-sets victory over Miomir Kecmanovic on Wednesday.

The Russian, seeded third in South Australia, made short work of his Serbian opponent in a 6-0 6-3 win to reach the last eight with little hassle.

"It's always better to win 6-0 than to win 7-6 saving nine set points and playing one hour, 20 [minutes]," Medvedev said.

"But tennis is not as easy, otherwise everyone would be number one, but we have only one. So happy with my level today against a strong opponent. Second set was tougher, but managed to close it out at the end and looking forward to my next matches."

It sets up a match with countryman Karen Khachanov, who defeated Britain's Jack Draper in a 6-4 6-2 straight sets victory of his own at Memorial Drive Tennis Centre.

Japan's Yoshihito Nishioka will also compete in the quarter-finals after a 6-4 6-3 win over American Mackenzie McDonald, and will face home favourite Alexei Popyrin.

At the Tata Open Maharashtra in Pune, top seed Marin Cilic needed to survive a second-set fightback from Spain's Roberto Carballes Baena before he progressed 6-3 3-6 6-1.

Aslan Karatsev meanwhile took a two-set thriller against Tim van Rijthoven, prevailing in a 7-6 (9-7) 7-6 (10-8) triumph.

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.

Wins for Hubert Hurkacz and Magda Linette saw Poland advance to the City Finals of the United Cup in Australia on Tuesday.

Hurkacz made it through a tough encounter against Stan Wawrinka 7-6 (7-5) 6-4 to give Poland a 2-1 lead in their Group B tie with Switzerland in Brisbane, before Linette came from behind to beat Jil Teichmann 5-7 6-4 6-1 to clinch it.

Poland will face Italy in the Brisbane final, whose 5-0 whitewash of Norway included Matteo Berrettini sealing victory with a 6-4 6-4 win over Casper Ruud.

In Perth, Croatia advanced to the City Finals after a dramatic day that saw Caroline Garcia get France on the board with a straight sets win against Petra Martic, before Adrian Mannarino came from a set down against Borna Gojo to serve for the match as he looked to bring his country level at 2-2.

However, Gojo broke back in a tense encounter before winning a deciding tie-break to send Croatia through to face Greece, who sealed a 4-1 win against Belgium.

Stefanos Sakellaridis recovered from going a set behind to beat Zizou Bergs, before Maria Sakkari overcame Elise Mertens 6-1 7-5, with Sakkari and Stefanos Tsitsipas adding some gloss to the score with a mixed doubles success against Kirsten Flipkens and Michael Geerts. 

Spain and Australia were unable to progress but the hosts at least had the consolation of securing a victory thanks to wins for Jason Kubler against Albert Ramos-Vinolas, and the mixed doubles duo of John Peers and Sam Stosur against Jessica Bouzas Maneiro and David Vega Hernandez.

The USA had already secured their Finals berth against Great Britain in Sydney, but were ruthless as they finished off their tie against Germany to win 5-0.

After Jessica Pegula beat Laura Siegemund 6-3 6-2, Frances Tiafoe also defeated Oscar Otte in straight sets, before the American duo combined to beat Siegemund and Daniel Altmaier 6-7 (5-7) 6-4 10-7 to complete a clean sweep.

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