Tournament director Craig Tiley has no plans to change the Australian Open schedule despite a 4am finish for Andy Murray and Thanasi Kokkinakis.

Murray stormed back from two sets down to beat Australian Kokkinakis 4-6 6-7 (4-7) 7-6 (7-5) 6-3 7-5 early in the early hours of Friday morning on Margaret Court Arena.

The three-time grand slam champion sealed an incredible victory in a second-round thriller that took five hours and 45 minutes to settle.

That was the longest match in Brit Murray's career and the 4.05am finish was the third-latest in the history of the sport.

Murray made his feelings over having to play at that time of day very clear, but Tiley did not see an alternative option.

"You would expect from 7pm to 12pm (the evening session) in that five-hour window, you would get two matches," Tiley said. "We also have to protect the matches. If you just put one match at night and there’s an injury, you don't have anything for fans or broadcasters.

"At this point there is no need to alter the schedule. We always look at it when we do the debrief like we do every year, we've had long matches before, at this point we've got to fit the matches into the 14 days so you don't have many options."

Murray vented his frustration at the chair umpire during the match and stated after his victory that he did not see the logic in playing so late.

"I don't know who it's beneficial for," Murray said. "We come here after the match and that's what the discussion is, rather than it being like, 'epic Murray-Kokkinakis match'. It ends in a bit of a farce.

"Amazingly people stayed until the end, and I really appreciate people doing that and creating an atmosphere for us. Some people obviously need to work the following day and everything.

"But if my child was a ball kid for a tournament and they're coming home at five in the morning, as a parent, I'm snapping at that. It's not beneficial for them. It's not beneficial for the umpires, the officials. I don't think it's amazing for the fans. It's not good for the players.

"We talk about it all the time, and it's been spoken about for years. But when you start the night matches late and have conditions like that, these things are going to happen."

Andy Murray does not believe night matches dragging on into the early hours is beneficial to anybody.

Murray came back in stunning fashion at the Australian Open in a second-round match that started late on Thursday but dragged well into Friday in Melbourne.

The former world number one reached the third round with a marathon 4-6 6-7 (4-7) 7-6 (7-5) 6-3 7-5 victory over Thanasi Kokkinakis.

At five hours and 45 minutes, the five-set thriller was the longest match of Murray's career and the second-longest in Australian Open history, as the Briton claimed victory shortly after 04:00 local time.

Murray, though, sees no benefit of playing so deep into the night.

"I don't know who it is beneficial for," he said in a press conference. "We come here after the match, and that's what discussion is [about], rather than it being [on an] epic match.

"It ends in a bit of a farce. Amazingly, people stayed until the end. I really appreciate people doing that, creating an atmosphere for us.

"Some people need to work the following day. If my child was a ball kid for a tournament [and] they are coming home at five in the morning, I'm snapping at that.

"It's not beneficial for them, it's not beneficial for the umpires, the officials. It's not good for the players. We talk about it all the time. When you start the night matches, these things are going to happen."

Murray's career appeared to reach a potential end at this very tournament four years ago due to his longstanding hip issues, and it is a testament to his determination that he remains capable of going the distance in matches.

But he acknowledged there could be a health risk from long encounters such as this one, adding: "Potentially. It's strange because the courts are fast.

"When we started tonight, it felt like there was no pressure in the ball. It's just difficult to hit winners. There was a 70-shot rally yesterday, which is not normal. [We] probably need to look at that."

Kokkinakis was blunter in his assessment, posting on Twitter: "This f****** sport, man."

Murray, a five-time finalist in Melbourne, will face Roberto Bautista Agut in the third round, having progressed to that stage of the Australian Open for the first time since 2017.

Andy Murray made a record-breaking fightback in the longest match of his career to beat Thanasi Kokkinakis in an Australian Open thriller in the early hours of Friday morning.

After finding himself two sets down, Murray drew on the fighting spirit he has produced so many times over the years to secure an incredible 4-6 6-7 (4-7) 7-6( 7-5) 6-3 7-5 win on Margaret Court Arena.

The battling Brit came off the ropes to become he first player in Open era history to win 10 grand slam matches from two sets down.

With the clock having ticked past 4am local time, the 35-year-old finally triumphed in what was the second-longest match (five hours and 45 minutes) in Australian Open history, only beaten by the 2012 final between Novak Djokovic and Rafael Nadal (five hours and 53 minutes). 

Here, Stats Perform takes a closer look at some of the numbers from Murray's incredible win.

Murray's unbeaten grand slam streak against Australian players continues

Murray's success over Kokkinakis ensured his unbeaten record against Australian opponents at majors remained intact, making it 12 out of 12.

The former world number one has lost all five of his finals at the Australian Open, but he is now into the third round at the tournament for the first time since 2017.

His victory over Kokkinakis made him just the fifth male player in the Open era to win more than 50 main-draw matches at the Australian Open, joining illustrious company in Roger Federer, Djokovic, Nadal and Stefan Edberg.

Murray's greater experience shows against big-serving opponent

Kokkinakis seized control of the match by taking the first two sets, but as Murray dragged the contest into the later stages, the Brit's experience in big matches showed.

The 37 aces fired down by Kokkinakis was his highest career tally in an ATP-level main-draw match and 27 more than Murray served up. Kokkinakis racked up an astonishing 102 winners to Murray's impressive 69.

Three-time grand slam champion Murray became just the seventh male player to feature in 250 grand slam main draw matches, roaring back to surpass Todd Martin and Federer for the most major victories from two sets down. It was his first such triumph at the Australian Open.

Murray has now won both meetings with Kokkinakis, after also defeating him in the 2015 Davis Cup, and sets up a third-round clash with Roberto Bautista Agut, with whom he holds a 3-3 head-to-head record.

Andy Murray could scarcely believe he managed to fight from two sets down to topple home favourite Thanasi Kokkinakis in five sets at the Australian Open.

In an epic match that began on Thursday but ticked well into the early hours of Friday in Melbourne, Murray prevailed 4-6 6-7 (4-7) 7-6 (7-5) 6-3 7-5 in the second-longest match in Australian Open history.

With the clock having ticked past 04:00am local time, the five-time finalist finally triumphed to become the first player in Open era history to win 10 grand slam matches having lost the opening two sets.

"I don't know. Unbelievable that I managed to turn that round," said Murray, who has reached the third round of the Australian Open for the first time since 2017.

"Thanasi was serving unbelievable. I don't know how I managed to get through it. Yeah, I have a big heart.

"I'm aware I don't look particularly happy when playing but I'm at my happiest on the inside.

"I've always loved competing and always showed my emotions when I've played. I've been criticised a lot for it over the years but that's who I am."

Finally, in a message to the fans that stuck around at Melbourne Park, Murray said: "Thanks so much to everyone for staying. It's ridiculously late. You didn't need to do that but it really helps me and Thanasi when we have all of you creating an amazing atmosphere. I think we should all get off to bed now."

Kokkinakis was in cruise control when he doubled his lead with a tie-break victory in the second set.

But he then appeared to start feeling the pressure in the third set, smashing his racquet following an angry dispute with the umpire after receiving a time violation.

Taking advantage of his opponent's loss of composure, Murray battled back from 5-2 down to force another tie-break, where Kokkinakis lost four points on his serve as the match was pushed to a fourth set.

Having been one game from defeat, the tide was turning in Murray's favour, as he teed up a decider that had looked so unlikely.

Murray spurned his first seven break points but brilliantly won his eighth attempt with the set tied at five games apiece, putting the former world number one on the verge of a stunning success.

He made no mistake as he clinched victory with a forehand winner, ending the match after five hours and 45 minutes.

Only the 2012 final between Novak Djokovic and Rafael Nadal (five hours and 53 minutes) beating it in terms of longevity in the tournament's history.

Andy Murray savoured a landmark win at the Australian Open as Tuesday's five-set triumph against Matteo Berrettini gave him a 50th career victory at Melbourne Park.

The world number 66, formerly an ATP rankings leader, slugged out a 6-3 6-3 4-6 6-7 (7-9) 7-6 (10-6) success against 13th seed Berrettini, who reached the semi-finals last year.

It handed Berrettini a first opening-round exit at a grand slam since the 2019 Australian Open.

Murray said he "wouldn't expect to feel perfect" for his next match on Thursday, given the effort that went in over the four hours and 49 minutes on Rod Laver Arena.

However, the 35-year-old, who will face Fabio Fognini or Thanasi Kokkinakis next, will want to be back to somewhere near full health for that tussle.

Last year in Australia, Murray beat 21st seed Nikoloz Basilashvili in another gruelling first-round five-set marathon, before losing tamely to Japanese qualifier Taro Daniel in his second match.

In all, Tuesday's scalp of Berrettini gave Murray his fourth five-set win at the Australian Open. The other two came in semi-finals, beating Roger Federer in 2013 and Milos Raonic three years later. He lost in the subsequent final both times to Novak Djokovic.

Djokovic has beaten Murray in four Australian Open finals, with the Briton also sunk by Roger Federer in the 2010 title match, meaning he has been runner-up five times and never come away with the trophy.

Federer has won the most men's singles matches in Australia, with 102 victories, landing six titles along the way. Djokovic, with nine, has the most titles.

A weary Murray said after finishing off Berrettini: "In the last few years, I've certainly questioned myself at times. There's certainly a lot of people who have questioned me and my ability, whether I could still perform at the biggest events and the biggest matches.

"I felt very proud of myself after the match. That's not something that I generally felt over the years at the end of the tennis matches.

"I was impressed with myself, which again is not something... I'm hard on myself usually."

Andy Murray pulled off a stunning victory over Matteo Berrettini at the Australian Open as the five-time runner-up enjoyed another big moment in Melbourne.

Unseeded this year, former world number one Murray survived a match point against him to take a first-round thriller against the Italian 13th seed.

Murray had not lost a grand slam match after winning the first two sets since a third-round clash against David Nalbandian at Wimbledon in 2005, his first grand slam main-draw appearance.

Yet he almost let such a lead slip away this time, before digging deep for a 6-3 6-3 4-6 6-7 (7-9) 7-6 (10-6) victory, achieved in four hours and 49 minutes.

Five-time Australian Open runner-up Murray faced a daunting opener, but both men would have hoped for a kinder draw.

It seemed to be going firmly the 35-year-old Scot's way when he swept through the opening two sets, but back came Berrettini to level up, edging a tight fourth that could have gone either way.

Berrettini had the contest at his mercy at match point against Murray's serve at 5-4 in the decider, only to clatter a close-range backhand into the net when it seemed sure he would put away a winner.

The stakes were high as the match entered a final-set tie-break, and when Murray sped into a 5-0 lead he looked firmly in control. There were slight wobbles from that point, but Murray made sure, helped by a lucky net cord on match point as a service return trickled over.

"I didn't know that," Murray said afterwards, when told about his record when leading matches by two sets.

Berrettini lost his first meeting with Murray, which came in Beijing in 2019, but the Italian won all three of their next matches, on grass at London's Queen's Club and Stuttgart before a US Open victory last September.

Former Wimbledon and US Open winner Murray, still playing thanks to his metal hip, expects Tuesday's match on a scorching day in Melbourne to take a toll. 

"I'll be feeling this, this evening and tomorrow, but right now I'm unbelievably happy, very proud of myself," Murray said in an on-court interview.

"I've put a lot of work into the last few months with my team who are here to give me an opportunity to perform on stadiums like this and matches like this, against players like Matteo, and it paid off tonight."

Extreme heat stopped play on day two at the Australian Open as tournament chiefs stopped play on all courts without a roof due to soaring temperatures.

By the middle of the afternoon on Tuesday, the tournament's heat stress scale had reached 5, the point at which play has to be suspended.

Matches were allowed to continue through to the end of an even number of games in a set, or the end of a tie-break, before players left the court.

It led to an interruption of around two hours on all courts without a roof.

The tournament's heat policy takes account of radiant heat – the strength of the sun – plus air temperature in the shade, relative humidity and wind speed.

An initial warning of what might be set to happen came when the tournament delivered a first weather report, stating: "At 1:12pm the AO heat stress scale reached 4 and the heat policy came into play.

"This means singles players can take a 10-minute break – women between the second and third set and men between the third and fourth set of their matches. Players have the option of staying on court or using showers or cooling rooms."

Less than two hours later came confirmation play would have to stop, except for those courts where the players had shade thanks to a roof.

The tournament announced: "The AO heat stress scale has reached 5 and play will be suspended on the outside courts. There will be no play on outside courts before 5pm."

Andy Murray's gripping first-round match against Matteo Berrettini on Rod Laver Arena, the main show court, was able to continue due to that show court's roof, while play also continued on Margaret Court Arena and John Cain Arena.

American Taylor Fritz, used to playing in high heat in his native California, said he did not find conditions too oppressive.

His match on John Cain Arena began without a roof, before it was closed to allow play to go on.

"It's hot, but it's dry heat, so I don't really mind it too much," said Fritz, a dark horse for the title this year.

"Playing in D.C. last year, US Open some years, is much worse because it's so hot, plus the humidity. When it's like today, it's not that humid. I don't think it's as bad.

"As long as it's this dry type of heat, then it's not that big of a deal. If it was this hot plus humidity, then it might be an issue. It would be pretty annoying to deal with."

Nine-time champion Novak Djokovic will make his return to the Australian Open against Spain's world number 75 Roberto Carballes Baena.

After being deported from Australia last year amid a row over his refusal of a COVID-19 vaccination, Djokovic is firmly back in favour and chasing history in Melbourne, with a record-equalling 22nd men's singles grand slam in his sights.

He begins against an opponent who in four previous main draw appearances has only ever won one singles match at Melbourne Park.

Defending champion Rafael Nadal, whose 22 slam titles Djokovic is seeking to match, has a tricky opener against rising British star Jack Draper, the world number 40.

Second seed Casper Ruud will tackle Czech Tomas Machac first up, with the 115th-ranked player unlikely to prove too daunting an obstacle for last season's French Open and US Open runner-up.

Fifth seed Andrey Rublev could face an awkward assignment against wildcard and former US Open winner Dominic Thiem, while Australia's Nick Kyrgios begins against Russian Roman Safiullin.

Neither 13th seed Matteo Berrettini nor five-time runner-up Andy Murray would have been delighted to be paired together, but that is what happened in Thursday's draw.

In the women's singles, top seed Iga Swiatek starts her bid for a first Australian Open title against Germany's Jule Niemeier, who caught the eye last year on a run to the Wimbledon quarter-finals.

American seventh seed Coco Gauff starts against Czech Katerina Siniakova, while Jessica Pegula, Gauff's third-seeded compatriot who recently beat Swiatek in the United Cup, will face Belgian Jaqueline Cristian.

Gauff could face former US Open winner Emma Raducanu in the second round. Unseeded Briton Raducanu starts against Germany's Tamara Korpatsch.

Former champions Sofia Kenin and Victoria Azarenka go head to head in the first round, with American Kenin unseeded this year and Belarusian Azarenka the 24th seed.

Azarenka's compatriot Aryna Sabalenka is fancied to do well, having banished last year's serving yips, and the fifth seed starts against Czech Tereza Martincova.

Tunisian second seed Ons Jabeur, runner-up at Wimbledon and the US Open, begins her latest quest for an elusive grand slam title against Slovenian world number 88 Tamara Zidansek.

Former US Open winner Bianca Andreescu is unseeded in Australia and Czech 25th seed Marie Bouzkova drew a possible short straw by getting the Canadian in round one.

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).

Novak Djokovic took just an hour and 15 minutes to win his first singles match in Australia since 2021, beating Constant Lestienne 6-3 6-2 at the Adelaide International on Tuesday.

Djokovic – who saw a three-year visa ban lifted in November – played with Vasek Pospisil in the doubles on Monday, but this was his first singles outing in the country since his vaccine-related absence from last year's Australian Open.

"For the first match [of the season] I can't complain," Djokovic said. "I played very well. I thought the first six games were very competitive and I have never faced him before.

"But once I made that break at 3-2 in the first set I thought I stepped it up and played really good tennis for the rest of the match."

Elsewhere in Adelaide, third seed Daniil Medvedev advanced after Lorenzo Sonego retired hurt with the Russian leading by a set, while sixth seed Jannik Sinner eased past Kyle Edmund 6-3 6-2.

Seventh seed Denis Shapovalov is also through after coming from a set down to beat Rinky Hijikata, but fourth seed Andrey Rublev is out after losing to Roberto Bautista Agut in three sets.

The Spaniard will face Sebastian Korda next after he beat Andy Murray 7-6 (7-3) 6-3, while eighth seed Karen Khachanov advanced after beating Pedro Cachin 6-2 6-4. 

At the Maharashtra Open in Pune, Aslan Karatsev had no problems seeing off Pablo Andujar 6-1 6-3, with the eighth seed set to face Tim van Rijthoven in the last 16 after the Dutchman beat Radu Albot 6-4 6-4.

There were also wins for Maximilian Marterer against Elias Ymer and Pedro Martinez against Ramkumar Ramanathan.

Andy Murray has conceded he is just one major injury from being forced to retire, though the three-time grand slam winner remains keen to play on.

Murray underwent two hip surgeries in 2018 and 2019, causing him to spend much of the last four years on the sidelines.

However, Murray returned to the top 50 of the world rankings after making two tour-level finals in 2022, while his run to the third round of the US Open represented his joint-best grand slam campaign since Wimbledon 2017.

The two-time Wimbledon champion saw rival Roger Federer retire from the sport in September after struggling with a knee injury, and while he acknowledges fitness concerns could force his hand, Murray is not yet looking to follow suit.

"If my body is in good shape and I'm still able to compete consistently, I'll keep playing," Murray said.

"But I can't look so far in advance with the age I'm at and with the issues I've had. If I was to have a big injury, I probably wouldn't try to come back from that."

Murray has been training with coach Ivan Lendl in a bid to ensure he enters next month's Australian Open in peak condition, having missed three of the last five editions of the tournament.

"I spent three weeks in Florida, getting my body right and getting some work done on my game and it went really well," he said.

"I'm certainly in better shape than I was. A lot of work was done in the gym, trying to build up my endurance and my stamina a bit and I'm hoping that's going to help me next year.

"I wasn't happy with how last season went – certainly the last six months or so from a physical perspective – but my ranking still went from 125 to 50 in a year. 

"I'm hoping that this year, with the work I've done, things will continue to improve and I'll still be motivated to get out there and compete."

Andy Murray has been named the winner of the ATP's Arthur Ashe Humanitarian Award for the second time after he donated his prize money for 2022 to Ukraine.

The Briton announced in March that his winnings earned throughout the rest of the year would be donated to UNICEF, for whom he is an ambassador.

Ukraine was invaded by neighbour Russia in February, escalating an ongoing conflict that saw players from the latter nation barred at Wimbledon this year amid sanctions.

After previously being presented with the honour in 2014, Murray revealed earnings of approximately £510,000 would be donated from his season.

"There are 7.5 million children in Ukraine and after more than nine months of increased conflict, 5.2 million of them are in need of assistance," he said. 

"When you see images of children on the news who were impacted by things like this, that makes it even more difficult to stomach.

"I have four young children who are really fortunate that everything is fine with them. But being a parent, it affects you differently.

"You try to put yourself in their shoes. If something like that happened with your own family, how difficult would that be? It is hard to fathom."

Carlos Alcaraz was meanwhile named the Most Improved Player of the Year, after the Spaniard claimed a maiden grand slam at the US Open and reached number one in the ATP Rankings.

"Everything has come so fast," the teenager added. "I didn't think at the beginning of the year that I'm going to have the year that I'm having right now.

"I always believe in my team and in my work, so this is something that came with the hard work that I put in every day. Everything pays off."

Jannik Sinner and Marin Cilic were the two most notable first-round losers at the Paris Masters, where Taylor Fritz kept his slim ATP Finals hopes alive on Monday.

World number 12 Sinner, the 11th seed in the French capital this week, suffered a straight-sets loss to Marc-Andrea Huesler, as did 15th favourite Cilic against Lorenzo Musetti.

Ninth seed Fritz downed Alejandro Davidovich Fokina 7-5 6-2, with Cameron Norrie and Frances Tiafoe also recording straight-sets victories against Miomir Kecmanovic and Lorenzo Sonego respectively.

Victory for Fritz kept the American in the hunt for qualifying for November's ATP Finals in Turin for the first time, needing to reach the final in Paris to overtake Felix Auger-Aliassime or Andrey Rublev.

"Right now I'm just focused on kind of playing myself into the tournament," said Fritz. "I feel like any time this year that I've won a couple of matches in a tournament, then I've done well.

"So I'll just try to focus on these early rounds. Turin is still in the picture, obviously, but there's not much else I really could have done.

"Felix has played really, really well, so he deserves it, but I am going to try to steal his spot this week for sure."

Home favourite Gilles Simon awaits Fritz in the second round at the ATP 1000 event after defeating Andy Murray 4-6 7-5 6-3.

Alexander Bublik and Mikael Ymer played out another three-set battle, with the former triumphing 6-1 6-7 (2-7) 6-4.

Richard Gasquet, Yoshihito Nishioka, Karen Khachanov, Maxime Cressy, Nikoloz Basilashvili and John Isner were the other first-round winners on the opening day in France.

Stefanos Tsitsipas crashed out of the Vienna Open after losing in a dramatic third-set tie-break against Borna Coric, who claimed his third successive win over the Greek ace.

The second seed was the highest-profile casualty in the Austrian capital on Thursday, as he succumbed to the Croatian once more 4-6 6-4 7-6 (7-4).

Coric rescued six match points before stunning Tsitsipas at the 2020 US Open, while he also triumphed when they collided in the Cincinnati showpiece in August.

The world number 27's chances of completing a hat-trick of victories appeared bleak at a set and break down, but he rallied to force a decider that went the distance, before holding his nerve for another notable win.

Coric's reward is a quarter-final clash with Hubert Hurkacz, who boosted his chances of qualifying for next month's ATP Finals with a 7-5 4-6 6-3 win over Emil Ruusuvuori.

Daniil Medvedev advanced to the last eight after a 6-3 6-3 victory over home favourite Dominic Thiem. Next up for the top seed is Jannik Sinner after the Italian saw off Francisco Cerundolo 7-5 6-3.

Third seed Andrey Rublev's ATP Finals hopes were dented after a 6-3 6-4 defeat by Grigor Dimitrov, who will play Marcos Giron after the American overcame seventh seed Cameron Norrie in straight sets.

Over in Basel, third seed Felix Auger-Aliassime required just 49 minutes to complete a commanding 6-1 6-0 rout of Miomir Kecmanovic for his 10th straight ATP win.

Meanwhile, Stockholm champion Holger Rune continued his momentum by recording a seventh straight victory after seeing off Ugo Humbert 6-4 6-2.

Sixth seed Roberto Bautista Agut enjoyed a straight-sets win over three-time grand slam champion Andy Murray to set up a clash with home favourite Stan Wawrinka, who outlasted Brandon Nakashima in a deciding set.

Stan Wawrinka rolled back the years for a glorious victory over Casper Ruud at the Swiss Indoors, joining fellow veteran Andy Murray in putting on a show in Basel.

Former world number one Murray pulled off a remarkable win over Russian Roman Safiullin, winning five games in a row from 4-1 behind in the final set.

But that was just a tease for the excitement that followed, as Wawrinka, who like Murray won three grand slam titles in his prime, felled second seed Ruud in straight sets.

The 37-year-old Swiss delighted his home crowd with a 6-4 6-4 victory over this season's French Open and US Open runner-up, serving nine aces as he defied a world ranking of 194th to produce some of his old magic.

Murray has fallen away from the elite ,too, but at 49th in the world he is not far away from rejoining that pack, although defeat looked to be beckoning against Safiullin.

The 35-year-old Scot fist-pumped with relief at recovering the break of serve that Safiullin snatched early in the decider, and Murray hit a service winner on his second match point to seal a 6-7 (5-7) 6-3 6-4 success.

The victory for two-time Wimbledon winner Murray took him to 26 wins this season, the most he has had in a single campaign since pulling off an astounding 78 victories in 2016, the year he won at the All England Club for a second time, landed a second Olympic gold medal and finished top of the rankings.

Murray said of his win: "As the match went on, I started to dictate a few more points and served better."

Quoted on the ATP website, he added: "I changed the way I was returning a little bit, and when I did that, I was able to create a few more opportunities and frustrate him a little bit."

Pablo Carreno Busta scored a 6-2 6-1 win against Argentinian Sebastian Baez, with Alex Molcan, Dominic Stricker and Botic van de Zandschulp also advancing to the last-16 stage.

At the Vienna Open, Murray's fellow British players Cameron Norrie and Dan Evans both went through to the second round, Norrie beating Argentina's Pedro Cachin 3-6 6-2 7-6 (7-1) and Evans fending off Germany's Oscar Otte 6-4 7-6 (7-3).

Canadian left-hander Denis Shapovalov beat Austrian wildcard Jurij Rodionov, but the home crowd had something to celebrate when former US Open champion Dominic Thiem continued his resurgence by eking out a 2-6 7-6 (7-2) 7-6 (8-6) victory against American Tommy Paul, saving two match points.