Jannik Sinner came of age at the ATP Finals in Turin with a first career victory over world number one Novak Djokovic.

The 22-year-old Italian won a three-hour marathon 7-5 6-7 (5) 7-6 (2) in a match of high tension and tremendous quality.

Defending champion Djokovic next faces Poland’s Hubert Hurkacz on Thursday in his final group match as he bids to reach the semi-finals.

In front of a raucous home crowd, Sinner grabbed the crucial break in the 11th game, despite finding himself 40-0 down, and then held to love to take the first set.

Djokovic, on a 19-match winning streak, took the second set to a tie-break and was twice a mini-break down before levelling the match, cupping his ear to the spectators.

World number four Sinner then played a stunning return game, breaking Djokovic to 15 with a punishing forehand to move 4-2 up in the third.

But with two hours and 40 minutes on the clock, Djokovic finally broke his young opponent for the first time in the match.

At 5-6 Djokovic began conducting the jeering crowd from his seat at the changeover.

The six-time ATP Finals champion had won 30 tie-breaks this season but number 31 proved elusive as Sinner moved 5-0 up before sealing a statement win with a smash.

“I feel I’m a bit more confident in certain moments but I still have to learn many things,” he said on Amazon Prime.

“I think I was really brave and intelligent, especially in the third set. I think we both played really well.

“It means a lot to me. When you win against the world number one who won 24 grand slams it’s up at the top.”

The afternoon match ended prematurely when Stefanos Tsitsipas retired after just 15 minutes, handing Holger Rune his first win.

Denmark’s Rune, 20, was leading 2-1 when Greek world number six Tsitsipas pulled out due to a back injury.

Tsitsipas was forced to withdraw from the tournament and was replaced by Hurkacz.

“Unfortunately, I felt terrible on the court. I did what I could do in the best possible way to be ready and fit for this match, but it didn’t work out for me,” Tsitsipas, the 2019 champion, said in his press conference.

“It kills me not to be able to finish this tournament, the one that I’ve prepped for for so long.”

Novak Djokovic ensured he will finish the year ranked world number one for an eighth time after battling to a late-night victory over Holger Rune in his opening match at the ATP Finals.

Djokovic is chasing a record seventh title but again found 20-year-old Rune, who is making his debut at the eight-man event, a troublesome opponent before pulling off a third win in five meetings.

It was past midnight in Turin when Djokovic completed a 7-6 (4) 6-7 (1) 6-3 victory after three hours and four minutes on court.

Rune has fared much better against Djokovic than most of his rivals over the last couple of years, beating him in Paris last autumn and Rome in the spring before a narrow defeat in the French capital a week-and-a-half ago.

The Serbian went on to claim the Masters series title, maintaining his record of not having lost a match since the Wimbledon final.

It was Rune who struck first with a break to lead 3-2 but Djokovic hit straight back and the high-class set went all the way to a tie-break, which the top seed took with a forehand smashed cross-court past his helpless opponent.

Rune reacted well, breaking again to lead 2-0 in the second set, but once more Djokovic found the immediate response, and a strong serve foiled the young Dane when he forced a set point at 4-5.

Rune slumped after reaching the Wimbledon quarter-finals prior to hiring Djokovic’s former coach Boris Becker last month, but there were plenty of moments here to demonstrate his huge talent and fearsome ball-striking.

He has won at least a set against Djokovic in every match they have played, but he had a helping hand in setting up a decider, his rival playing a highly unusual lacklustre tie-break.

Djokovic broke straight away to start the deciding set, only for this time Rune to recover the deficit immediately, prompting a frustrated Djokovic to stamp on two rackets, snapping the frames.

But he broke again to lead 4-2 and this time there was no way back for Rune.

Djokovic told Prime Video: “It took everything. I saw in the first game when he fired shots from the baseline, I knew it was going to be a tough night for me. I thought he played great. I played great in some moments.

“Overall a win is a win. It was a very emotional win and a tough win knowing the significance of tonight’s match. After a really terrible second-set tie-break I think I played a really solid third set.”

Earlier, Italian Jannik Sinner delighted the crowd by defeating Stefanos Tsitsipas in the opening singles match.

Sinner, 22, played as an alternate two years ago but qualified for the first time this season after claiming four ATP Tour titles and rising to world number four. He is one of the favourites to lift the trophy this week, which would be the dream scenario for the home fans, and a 6-4 6-4 victory over Tsitsipas is a big step towards the semi-finals.

Novak Djokovic could still win three majors next year but Gilles Simon reminded tennis fans the world number one is not "eternal" as he heads towards the end of his career.

Djokovic triumphed in three of the four majors in 2023, with September's US Open success taking him level with Margaret Court's record 24 grand slam triumphs.

Defeating Daniil Medvedev in the final, Djokovic – aged 36 years and 111 days – became the oldest winner of the men's singles title at the US Open, as well as winning a trio of majors in a year for the fourth time.

That saw him surpass Roger Federer – who won three grand slams in a year on three occasions.

Simon, though, warned that Djokovic cannot play on forever.

He told Stats Perform: "I think he can win some [majors, but] I think he's getting to an age where it is going to become difficult.

"Most of the observers want to believe that a player is eternal but none are more eternal than the others.

"I think he can win a lot next year; will he win one, two or three? Next year he can do one more big year, but I also think that it will be his last."

The 36-year-old Djokovic acknowledged the retirement speculation after his US Open victory, asking how long he can continue.

Simon likened the twilight of Djokovic's career to fellow great Federer, whose playing days were curtailed by injury and fitness issues.

"At one point like every player there's going to be a break, that was the case for Roger Federer, remember when he won in Australia at the age of 37 playing incredible tennis," Simon added.

"At Wimbledon, he could have won because he lost against Novak Djokovic on match point. Time never had a grip on him, he had never been injured, he played really well, and then all of a sudden he disappears."

Another of tennis' 'Big Three', Rafael Nadal has not played since January 18 at the Australian Open – again owing to injury problems as years of toiling on the court takes its toll on even the best.

"We have Rafael Nadal who we hope to see again next year, who got us accustomed to more traditional injuries, longer injuries and with doubts," Simon continued.

"Once again he wins the Australian Open, he wins at Roland Garros even with his history with his foot, he again has a semi-final at Wimbledon.

"We say no about Novak because he is more careful, but we said the same about Federer, he expends less energy, he has a more fluid game and technique, he preserved himself from injury.

"I think next year will be very interesting because it’s a year where he can again win, where he still has an advantage [ahead of the rest] but we saw him lose against [Carlos] Alcaraz at Wimbledon.

"I thought he would have more advantage on grass because of the experience he has compared to others and his game works so well on grass – but he is beatable."

Age has shown no sign of slowing Djokovic down yet after he lifted the Paris Masters trophy for a seventh time on Sunday, defeating Grigor Dimitrov in straight sets.

That victory marked his second hard-court ATP-1000 title of 2023, Djokovic managing multiple Masters titles in a single season for the ninth time in his career. Only Federer, having won multiple such events in a year six times in his time, can get near to that feat.

Yet Simon suggested 30 major triumphs may be out of Djokovic's reach due to the emergence of Alcaraz, who won at Wimbledon this year, and a gruelling schedule.

"He's so strong he knows how to prepare himself, but he can't do a series of tournaments," said the Frenchman, who won 14 career titles and reached a high of number six in the ATP rankings.

"If everything was going well he would be playing every week like when he was 25 years old, so that is what is missing.

"He looks after himself, ultra-professional and very strong. The US Open was important for him, I see him maybe doing one or two next year, but I am waiting to see for the next few years after that.

"I can't see him reaching 30 [majors] for example when Carlos Alcaraz could win two or three a year – I wish it for him but I don't see it like that."

The Rolex Paris Masters became the first Masters 1000 to broadcast its qualifying matches on Twitch, live on Rivenzi's channel.

Novak Djokovic immediately set his sights on the next big goal after clinching a record-extending 40th Masters series title in Paris.

The Serbian’s loss to Carlos Alcaraz in the Wimbledon final appeared to mark a real shift in men’s tennis but Djokovic has not lost a match since.

He collected a 24th grand slam title at the US Open and has also won titles in Cincinnati and now the French capital, a winning run of 18 matches, six of them against top-10 players.

At 36, Djokovic plays sparingly, but, when he does take to the court, he remains clearly the best player in the world – he has lost only five matches in 2023 and won three grand slam titles.

Next up, Djokovic will aim to win a record-breaking seventh ATP Finals title in Turin before trying to lead Serbia to a second Davis Cup crown.

“I try to be a good student of the game and keep track with the numbers but, at the same time, I also want to be able to just direct my attention to the next challenge,” Djokovic told reporters in the French capital.

“As long as I’m an active player, I guess that’s going to be kind of the mentality I will nurture. It’s great, but it’s already behind me.

“This is, fortunately or unfortunately, the way it works for me, and the way I think is the correct mentality moving forward. Because, while I’m still active, I still want to win more and I still want to play at the highest level.

“Obviously grand slams and Masters events are the most valuable tournaments in our sport.”

An insatiable desire to win biggest titles and an almost super-human ability to peak both for the most important tournaments and matches and the key moments within those matches have combined to keep Djokovic at the top of the tree while the sands have shifted around him.

He is nearly a decade older than any other player in the top 13 and struggled with a stomach bug in Paris but was still able to lift the trophy.

This undoubtedly does not reflect particularly well on Djokovic’s rivals, albeit they are taking on one of the greatest athletes of all time, while he again had to confront boos from the crowd on several occasions.

The Serbian’s complex relationship with tennis fans is nothing new, and Parisian crowds have a justified reputation for their willingness to jeer players, which was especially evident at the French Open this year.

Djokovic may wish he was received differently but he has also admitted being portrayed as a villain has driven him on, while it should not be overlooked that he has a sizeable army of devoted fans around the world.

He clearly takes great delight in keeping the young pretenders at bay, and, with his body holding up generally very well, it would be no surprise to see him continue to do so into 2024.

He is only two weeks short of hitting 400 weeks at world number one while he will be the hot favourite to win an 11th Australian Open title in January, which would put him out on his own as the most successful grand slam singles player in history.

Novak Djokovic eased past Grigor Dimitrov to claim a record-extending seventh Paris Masters title on Sunday.

After needing three sets to win each of his previous three matches, the world number one found the going more straightforward in the final as he saw off the Bulgarian 6-4 6-3.

It was also the Serbian’s 40th Masters 1000 crown, another record, and his 97th on the ATP Tour.

Djokovic allowed his opponent few opportunities, and a single break of serve in each set proved decisive as the 36-year-old won in 98 minutes.

“I think the match was closer than the scoreline indicates, but another amazing win for me,” said Djokovic on atptour.com.

“I’m very proud of this one, considering what I’ve been through this week – basically, coming back from the brink of losing three matches in a row.

“I was very close to losing those matches and somehow managed to find an extra gear when it was needed.

“Today, I think we both were quite tight at the beginning. I could see that he was running out of gas a little bit, myself as well, but I somehow managed to find an extra shot over the net.”

Djokovic is unbeaten since losing to Carlos Alcaraz in the Wimbledon final in July and will head to the ATP finals in Turin next week on an 18-match winning run.

Rafael Nadal is unlikely to match Novak Djokovic's haul of 24 grand slam titles, but the Spaniard is capable of capping his remarkable career with one last Roland Garros triumph next year. 

That is the opinion of Feliciano Lopez, who hopes to see Nadal overcome his injury woes to enjoy a triumphant send-off in 2024.

Nadal's total of 22 grand slam titles is only bettered by Djokovic among male players, with the Serbian matching Margaret Court's overall record by winning the US Open.

Djokovic has won three of four grand slams in 2023, with injuries leading Nadal to miss the last three majors after he was eliminated from the Australian Open by Mackenzie McDonald in January.

Nadal confirmed earlier this year that 2024 would "probably" be his last year on the tour, and former world number nine Lopez is desperate to see his compatriot go out on a high.

Asked if Nadal could add to his 14 French Open titles – a single-slam record – next year, Lopez told Stats Perform: "With Rafa, you never know, because he has shown on other occasions that he was able to come back stronger, even when he had significant injuries. 

"It will depend a lot on how he feels physically, that will be key. I wouldn't be surprised to see him competing at a good level next year and I would love for him to say goodbye by winning Roland Garros. 

"It would be a dream for me and many people to see him lift that cup once again.

"It is very difficult for me to talk about Rafa, because he has changed the way we see sport in Spain. Before Rafa we had great athletes, but none transcended sport the way he has.

"Rafa's figure in Spanish sport and in the lives of Spanish people… there will be none like him. 

"There have been many joys that he has given us. He has given us examples in many situations outside of sports. There will be a before and after [Nadal] in Spanish sport."

While Nadal now looks highly unlikely to match the evergreen Djokovic for total grand slam titles, Lopez does not believe that will concern the 37-year-old.

"The issue of numbers and who is bigger than who fuels the media a lot," Lopez added. "At this moment in Rafa's life, I don't think he is thinking about that.

"With the numbers, we can see who won the most things, but that is not the question. I want him to return so he can compete again for one last year at the highest level. 

"Hopefully he wins one or two more grand slams, but right now, his goal is to recover and be physically competitive. 

"That is what Rafa needs and wants, because if he is not feeling well enough to compete, it will be very difficult for him to be able to play many tournaments next year." 

Novak Djokovic is just one grand slam away from becoming the most decorated player in history and Feliciano Lopez believes "the numbers don't lie" when it comes to debating tennis' greatest.

Serbia's Djokovic equalled Margaret Court's record of 24 grand slam triumphs after defeating Daniil Medvedev in straight sets at the US Open earlier in September.

That made the world number one, aged 36 years and 111 days at the time, the oldest winner of the men's singles title at the US Open.

It was also Djokovic's third major crown of 2023, winning a trio of grand slams in a calendar year for the fourth time in his career,

Davis Cup tournament director Lopez, who had previously hailed Djokovic for featuring at the "unique" competition, suggested no one in history compares with the 36-year-old.

Asked by Stats Perform if Djokovic was the GOAT – greatest of all time – Lopez said: "According to the numbers, yes. The numbers don't lie.

"If you look at the stats, Novak is the best. So, I mean, what can I say?

"I think the numbers are very clear, not only by the fact that he's won 24 slams, but also there are other numbers and other statistics that clearly show he's the best player who ever played the sport.

"According to the numbers, I cannot say anything different."

Djokovic triumphed at the Australian Open, French Open and US Open, only missing out on a clean sweep of the majors after losing the Wimbledon final to Carlos Alcaraz.

As for Djokovic's chances for more major success going forward, Lopez believes the sky is still the limit.

"It's very difficult to predict honestly, but as long as he's feeling physically strong I think it's clear that his will in the last three or four years is to keep winning grand slams," Lopez added.  

"If he is able to sustain his physical condition for the next two years, I can fairly say that he can win, I don't know, two, three or four, but it's very difficult to say one number because this year, for example, he could have won all four.

"He won in Australia, he won in Paris, he was very close to winning Wimbledon because of that second-set tie-break, and he just won the US Open.

"You ask me how many grand slams you think he will win in the future when he just won three of them in the same year!

"I don't know, maybe three or four more is fair to say, but it's very difficult to predict."

Great Britain have been drawn to play Novak Djokovic’s Serbia in the Davis Cup quarter-finals in Malaga.

Britain secured their place in November’s knockout stage by finishing top of qualifying Group B on Sunday night after their thrilling 2-1 win against France.

Defending champions Canada will face Finland, the Czech Republic play Group B runners-up Australia and the Netherlands take on Italy.

The final eight nations will compete for the 2023 Davis Cup in Malaga from November 21-26.

Britain secured their place in this year’s finals after Dan Evans and Neal Skupski saved four match points in their decisive doubles match against French pair Nicolas Mahut and Edouard Roger-Vasselin at a sold-out AO Arena in Manchester.

Evans and Skupski clinched a 1-6 7-6 (4) 7-6 (6) win in the deciding rubber after earlier 2-1 wins against both Australia and Switzerland.

Britain captain Leon Smith opted to play his highest-ranked duo Cameron Norrie and Evans in the singles against France.

Andy Murray and Jack Draper had featured against Switzerland and Australia respectively, while world number three in the doubles rankings Skupski completed the five-man line-up.

Smith is confident Britain can mount a serious challenge to repeat their success of 2015 when Murray led them to their last Davis Cup win with victory over Belgium in the final.

Novak Djokovic competing in the "unique" Davis Cup so soon after winning the US Open comes as an honour for tournament director Feliciano Lopez.

Serbia's Djokovic defeated Daniil Medvedev to equal Margaret Court's record of 24 grand slam triumphs after a straight-sets victory earlier in September.

At 36 years and 111 days, Djokovic became the oldest winner of the men's singles title at the US Open, as well as winning three majors in a year for the fourth time in his career.

That saw him surpass Roger Federer – who won three grand slams in a year on three occasions – but unlike the Swiss star, Djokovic has shown no signs of slowing down.

The 36-year-old was straight back into action just five days later, overcoming Alejandro Davidovich to help Serbia into the Davis Cup quarter-finals with victory over Spain.

Former Spanish tennis player and now tournament director Lopez hailed the endeavours of Djokovic for appearing in Valencia in such a short period after victory in the United States.

"As you can imagine having Novak here in Valencia this week is such an honour first of all," Lopez told Stats Perform.

"I personally appreciate a lot what he's done by coming here after winning the US Open because I know how tough it is to win a slam and then three or four days after put yourself in a position to compete again at the highest level.

"I don't think I can thank him enough that he's here ready to compete, ready to represent his country.

"I have to take my hat off and say thank you and wish him all the best for the rest of the week."

Djokovic has reiterated his commitment to helping Serbia to a second title in the men's Davis Cup, a tournament that Lopez believes is different to any other.

"I think the fact that you're representing your country is one of the things that I wanted to say [about what makes it special] because tennis is an individual sport where you normally play for yourself," he added.

"Whenever you have the chance to play for your team-mates, for your country and for a lot of people that you know, they put in a lot of efforts during that particular week to make everything happen.

"For me, it's the most special thing and unique."

Novak Djokovic matched Margaret Court’s record of 24 grand slam singles titles with his fourth US Open win.

Here, the PA news agency takes a look at the Serbian’s record.

Grand slam record

Djokovic has won seven of the last 10 major tournaments he has played and came up just a Wimbledon final defeat to Carlos Alcaraz short of a season slam this year.

That extends his record to 65 wins and three defeats since the start of 2021. He missed last season’s Australian and US Opens due to his Covid vaccination status but has otherwise been in a class of his own in the last three years.

He won 2021’s first three slams and reached the final in New York, only for Daniil Medvedev to deny him a calendar year grand slam – making this year the second time he has gone within one match.

Perennial French Open champion Rafael Nadal defeated him in last year’s quarter-final in Paris, since when he has won four out of five slams and reached the final of the other.

In his career as a whole, Djokovic has won 88 per cent of his grand slam matches, 361 of 409, and one-third of the major tournaments he has entered with 24 of 72.

He is now two clear of Nadal for the most grand slam titles by a male player and moves ahead of Serena Williams for all players in the Open era. Court’s 24 wins were split almost equally between 13 in the amateur era and 11 in the Open era.

Man for all surfaces

Djokovic enjoys a stunning record at all four grand slams, as the only man to win each on at least three occasions and one of only three to hold the four titles simultaneously.

He has not matched the calendar slam feat achieved by American Don Budge in 1938 and Australian great Rod Laver in both 1962 and 1969, but did win Wimbledon and the US Open in 2015 before adding 2016’s Australian and French Opens.

Melbourne is where Djokovic has bulked up his grand slam total with an astonishing 10 wins, the third-most of any player at a single slam after Nadal’s 14 French Opens and Court’s 11 titles in Australia – only four of which came in the Open era.

Djokovic has won Wimbledon on seven occasions and the French three times.

Novak Djokovic made history with a record-equalling 24th grand slam title at the US Open.

The 36-year-old Serbian tied Margaret Court’s tally with a 6-3 7-6 (5) 6-3 victory over Daniil Medvedev.

Here, the PA news agency looks back at day 14 at the US Open.

Pic of the dayShot of the dayQuote of the dayStat of the dayNumbers gameBrit watch

There was guaranteed to be British success in the men’s wheelchair singles with Alfie Hewett facing compatriot, and doubles partner, Gordon Reid.

It was Hewett who triumphed 6-4 6-3 to take his fourth US Open crown and eighth grand slam singles title.

Novak Djokovic secured his 24th grand slam title and became the oldest US Open champion in the Open era after a gruelling victory over Daniil Medvedev.

The 36-year-old Serbian, who is back up to world number one, beat third seed Medvedev 6-3 7-6 (5) 6-3 for a fourth Flushing Meadows crown.

The match hinged on a marathon second set lasting 104 minutes, which was longer than both players’ entire first-round matches.

Djokovic won it after a tie-break to move 2-0 up and finally break Medvedev’s spirit, going on to gain a measure of revenge after the Russian denied him the calendar grand slam in the final here two years ago.

The win also moved him level with Margaret Court’s record of major titles, although really that is a statistical irrelevance given the obvious difference in the level and depth of competition between now and the 1960s.

Of more importance to Djokovic is his record against his peers; he is now two clear of Rafael Nadal’s 22 grand slam crowns and four ahead of Roger Federer, who declared on 20 last year.

Having already won in Australia and Paris, Djokovic has picked up three major titles in a year for the fourth time in his career. Only the five-set defeat by Carlos Alcaraz in the Wimbledon final blemished his 2023 record.

Now he has surpassed Ken Rosewall, who was 35 when he won in 1970, and who did not have to contend with any sets lasting almost an hour and a quarter.

A Medvedev double-fault and a blistering backhand winner down the line gave Djokovic the early break point which he converted to love to subsequently take the first set in a relatively speedy 48 minutes.

But Medvedev, returning from about a quarter-of-a-mile behind the baseline, made Djokovic toil in the second set and it began to show with the favourite showing signs of fatigue.

After an hour and three quarters he produced his first break point of the match but Djokovic, with an obvious change of game plan in a bid to shorten the points, expertly snuffed it out with a big serve and an immaculate volley.

Medvedev had set point on the Djokovic serve but another volley at the net dealt with that, and when tie-break slipped away from the 27-year-old, the match soon followed.

Novak Djokovic broke yet another record as he reached the last four at the US Open.

The 36-year-old’s straight-sets win over Taylor Fritz saw him into the last four of a grand slam for the 47th time, overtaking Roger Federer’s tally.

Meanwhile, Coco Gauff became the first American teenager since Serena Williams in 2001 to reach the semi-finals.

Here, the PA news agency looks back at day eight at Flushing Meadows:

Pic of the dayPerformance of the day

Gauff dropped just two games as she blitzed Jelena Ostapenko 6-0 6-2 inside Arthur Ashe Stadium. The 19-year-old handed out a New York bagel in the first set to Latvian Ostapenko in only 20 minutes.

Quote of the dayStat of the daySong of the dayBrit watch

Defending champions Joe Salisbury and American partner Rajeev Ram are into the semi-finals of the men’s doubles.

Salisbury and Ram won the opening set against Argentinian duo Maximo Gonzalez and Andres Molteni 6-4 and came from 3-0 behind in the second by winning six games in a row.

Wimbledon boys’ champion Henry Searle lost in three sets to American Trevor Svajda in the second round of the juniors.

Fallen seeds

Women: Jelena Ostapenko (20), Sorana Cirstea (30).
Men: Taylor Fritz (9).

Who’s up next

Defending champion Carlos Alcaraz takes on Alexander Zverev for a place in the semi-finals.

Second seed Aryna Sabalenka faces surprise package Qinwen Zheng of China.

Novak Djokovic kept his cool in the New York heat to reach the semi-finals of the US Open and break yet another record.

The ice-cold Serbian is through to the last four of a grand slam for the 47th time, moving him one ahead of Roger Federer’s tally, after a 6-1 6-4 6-4 win over Taylor Fritz.

The roof was half-closed on Arthur Ashe to shield the players from the 90 degree temperatures amid energy-sapping humidity at Flushing Meadows.

American Fritz has been red hot all fortnight, not dropping a single set on his way to the last 16, but he was ruthlessly extinguished by the 23-time grand slam champion.

A demoralised Fritz has now lost all eight matches he has played against Djokovic.

The ninth seed hit more winners – 33 to Djokovic’s 25 – but he was simply ground down by the 36-year-old with a grand total of 51 unforced errors telling its own story.

He also forced 12 break points but converted only two of them, the second of which levelled the third set at 4-4 and prompted Djokovic to shoo some of his own supporters out of one of the executive suites.

But Djokovic immediately hit back, the three-time winner then saving another break point before completing the victory in two hours and 35 minutes to silence a partisan American crowd.

Djokovic said: “It’s expected that people are backing the home player, there’s nothing wrong with that. I like the atmosphere here, I’m fine with that and I thrive on that energy.

“I’ve been playing on this court for many years, played many epic matches, and I’m looking forward to another one in a few days.

“It’s a huge opportunity every time I step out on the court and at my age I don’t know how many more opportunities I’ll get.”

Novak Djokovic strolled into the last eight of the US Open with a three-set win over Croatian qualifier Borna Gojo.

Djokovic is now one behind Roger Federer’s record of 58 grand slam quarter-finals after a 6-2 7-5 6-4 victory.

The Serbian second seed got himself out of a minor pickle at 2-0 down in the second set, breaking back and dropping just four points in his next six service games.

A break to love in the third finished 6ft 5in Gojo off with Djokovic going through in two hours and 25 minutes.

Djokovic, bidding for a 24th grand slam title, said: “I knew Borna has a big game. I saw that he played well in the qualifying round.

“I saw that he’s a big-shot player, his serve and forehand are big weapons, he moves pretty well for a big guy, so the key points for me were to neutralise his serve.”

Djokovic has had a very agreeable draw in New York but he faces American ninth seed Taylor Fritz on Tuesday.

He added: “You know, obviously the matches are only going to get tougher from now onwards, and I’m ready.”

Big-serving Ben Shelton blew away fellow American Tommy Paul to lead the home charge into the quarter-finals.

The 20-year-old from Atlanta fired down two 149mph serves in one game on his way to a 6-4 6-3 4-6 6-4 victory.

“I think it was straight adrenaline,” he said. “In any other atmosphere I don’t think I could get it done. I think my arm would fall off, but it’s feeling good right now.”

The record fastest serve at the US Open is still held by Andy Roddick, who hit a 152mph thunderbolt on his way to the title in 2003 – the last time an American man won their home slam.

It was sweet revenge for Shelton, who was knocked out by Paul at the same stage of the Australian Open in January.

He added: “I really learned how to be mentally tough. When I was playing in Australia after a long week, I was looking at my box saying ‘my legs are dead, I’m tired, I can’t go anymore’.

“I realised how important it is to believe in myself, believe that I can go all the way, the full distance emotionally and physically and now I have that belief here.”

Shelton will play 10th seed Frances Tiafoe, guaranteeing at least one American man in the semi-finals.

Tiafoe beat Australian wild card Rinky Hijikata in straight sets, 6-4 6-1 6-4.

“It’s a shame that two of us have to play in the quarter-finals. Maybe we could have three in the semis,” added Shelton.

Fritz beat Dominic Stricker of Switzerland in three sets to make the last eight at Flushing Meadows for the first time.