World number five Andrey Rublev was sensationally defaulted after being accused of swearing at a line judge in the deciding set of his semi-final at the Dubai Open.

The combustible Russian was trailing 6-5 in the third against Alexander Bublik when he appeared to say something to the line judge.

ATP supervisor Roland Herfel came down to the court accompanied by a Russian speaker, who claimed Rublev had sworn in his native language.

Rublev protested, insisting he was speaking in English, while Bublik also backed his opponent.

“I didn’t say ‘f******’. I swear to God. This is huge. I swear to God,” said Rublev.

The offence would usually merit a warning in the first instance, but the 26-year-old was defaulted by umpire Miriam Bley amid jeers from the crowd in Dubai.

It was a controversial end to a tight match, with Kazakhstan’s Bublik progressing to the final 6-7 (4) 7-6 (5) 6-5.

Carlos Alcaraz snapped a three-match losing streak as he beat Andrey Rublev  7-5 6-2 in his penultimate round-robin contest of the ATP Finals in Turin.

It was the first encounter between the Spaniard and Russian, with the latter hoping to bounce back from Monday’s loss to compatriot Daniil Medvedev.

Instead he found himself pinned back by world number two Alcaraz, who never faced a break point and kept his hopes of advancing from the the Red Group alive with his first win at the year-end event after missing the last edition with an abdominal injury.

Alcaraz’s critical break came in the 11th game of the first set, during which he dropped just one point on his first serve and soon his opponent began to unravel.

Rublev dropped his serve to start the second set and could not rein in his reaction as he slammed his racquet against his knee with such force he drew blood, mopping it up with a towel at his chair before returning to the court.

It was all too much to overcome as Alcaraz, who finished with 21 winners to 11 unforced errors, sealed the 74-minute victory with his first match point.

The 20-year-old, who improved to 1-1 following his opening loss to Alexander Zverev, will face Medvedev to conclude the group stage on Friday while Rublev will take on Zverev.

Alcaraz told the ATP website: “It was a totally different match and level from me. This is the level I have to play if I want to give myself a chance in this amazing tournament.

“Yesterday was a good day for me in practise to find the level I needed to show today and I think I did pretty well. I am very happy with my level.”

Daniil Medvedev won the all-Russian clash at the US Open to deal his friend Andrey Rublev more quarter-final misery.

Third seed Medvedev, the 2021 champion at Flushing Meadows, lost the opening three games of the match as Rublev flew out of the blocks.

The world number eight, who is godfather to Medvedev’s daughter, won the first eight points and 14 out of the first 15.

But Medvedev quickly grew into the match, winning the first two sets amid some punishing rallies in stifling heat inside Arthur Ashe Stadium.

Rublev led by a break in the third but was pegged back again, and in a 15-minute final game, Medvedev converted match point at the fifth attempt to wrap up a 6-4 6-3 6-4 victory.

Luckless Rublev has now made the quarter-final stage in nine grand slams, and he has lost all of them.

“It was brutal,” said Medvedev. “The only good thing is in these conditions both suffer.

“I know he never gives up, but he knows I never give up too.”

Seventh seed Andrey Rublev dived into the quarter-finals of Wimbledon with an extraordinary shot to bring up match point against Alexander Bublik.

Rublev was in the middle of the baseline when Bublik hit what he, and everyone else on Centre Court, thought was a clean winner down the line.

But the Russian dived forward, got a racket on the ball and somehow floated it over the net.

“That is one of the great shots we’ve seen here in years,” exclaimed John McEnroe on commentary as Bublik scratched his head in disbelief.

Rublev, who had been two sets ahead but was pegged back by his opponent from Kazakhstan, went on to seal a 7-5 6-3 6-7 (6) 6-7 (5) 6-4 win after one of the most entertaining matches of the Championships.

“It was the most lucky shot ever,” said the 25-year-old. “It was luck, nothing else. I don’t think I can do it one more time.”

Rublev, in the last eight at Wimbledon for the first time, was joined by fellow Russian Roman Safiullin, who became the lowest ranked male quarter-finalist here since Nick Kyrgios in 2014.

The world number 92 upset Canada’s 26th seed Dennis Shapovalov 3-6 6-3 6-1 6-3.

He will face Italian sixth seed Jannik Sinner, who beat Daniel Elahi Galan of Colombia in straight sets.

Carlos Alcaraz survived a major scare in the opening match of his Madrid Open title defence as he came from behind to beat Emil Ruusuvuori.

The defending champion, who defeated Alexander Zverev in last year's final, was twice broken in the opening set by Ruusuvuori but responded well to prevail 2-6 6-4 6-2.

Alcaraz hit 36 winners to his opponent's 23 to reach the last 32, where Grigor Dimitrov awaits after defeating Gregoire Barrere 7-6 (8-6) 7-6 (7-2). 

"It was really tough. I would say I was about to lose," Alcaraz said in his on-court interview. "It was really tough. Emil played unbelievably, but I am really happy to get through that."

There was a shock result elsewhere as third seed Casper Ruud lost 6-3 6-4 to Matteo Arnaldi, who had never previously claimed victory over a top-10 opponent.

Arnaldi previously eliminated Benoit Paire and will now take on Jaume Munar – the Spaniard advancing after Tallon Griekspoor retired when a set behind in their second-round tie.

Monte Carlo Masters winner Andrey Rublev continued his good form on the clay courts with a 7-5 6-4 win against Stan Wawrinka.

Andrey Rublev came from a set down against Holger Rune to win the Monte Carlo Masters on Sunday, his first Masters 1000 title.

Having done the same in his semi-final against Taylor Fritz, Rublev showed grit and determination to do so again in the final, eventually winning 5-7 6-2 7-5.

Rublev become only the third player in the Open Era to have comeback wins in both the semi-final and final at Monte Carlo after Ivan Lendl (1988) and Ilie Nastase (1971).

Rune started the stronger of the two and forced a break in the sixth game of the first set with two delightful drop-shot winners, only for Rublev to break straight back in the next game.

After throwing away seven of eight break point chances in the first set, it was somewhat inevitable Rublev was unable to save a crucial one on his own serve with Rune at set point, sending a return long to hand the Dane the first frame.

This was Rune's sixth ATP Tour-level final, making him the fifth teenager to pass five since 2000.

Rublev seemed determined not to make the same mistake again as he immediately broke Rune's serve in the opening game of the second set, although he did pass up two chances for a double break before Rune levelled the set at 2-2.

The heat appeared to be affecting both players' service games in a high-octane encounter, but Rublev steadied himself before breaking again and then racing to another as he comfortably secured the second set.

As Rublev had done after dropping the opener, however, Rune responded defiantly and raced out to a 3-0 lead in the decider, but after missing a chance to go 5-1 up, he was broken back as Rublev came back to 4-4.

At 5-5, a tiring Rune twice hit the net with overhead smashes and then had a double fault at break point, leading to a crucial break for the Russian, who then served out the match to clinch the title.

"I know it's tough to lose a final, but you are too freaking young, man, and already have a Masters 1000 title, so give me one time to win it," Rublev joked with a smiling Rune at the trophy presentation.

Andrey Rublev is hoping it will be third time lucky in a Masters 1000 final after setting up a title showdown with Holger Rune in Monte Carlo.

The 25-year-old Russian has 12 tournament wins to his name, but all have come at ATP 500 or ATP 250 level, respectable but lower rungs than this tier.

Rublev lost to Stefanos Tsitsipas in Monte Carlo in 2021 and to Alexander Zverev in Cincinnati in the same year, as he failed to capitalise on two chances to break his Masters 1000 duck.

Now comes another opportunity on the clay against teenager Rune on Sunday, after both men ground out tough semi-final comeback wins.

Rublev beat Taylor Fritz 5-7 6-1 6-3, while Rune fought back gallantly to overcome Jannik Sinner 1-6 7-5 7-5, with rain delays affected both matches on Saturday.

Rublev is full of appreciation for Rune's game. They met at the last-16 stage of the Australian Open in January, with Rublev winning a marathon clash in a dizzying final-set tie-break.

Their only other previous clash came indoors at the Paris Masters last November, with Rune taking that third-round match in straight sets and going on to win the title as an unseeded player, beating Novak Djokovic in the final.

Rublev said of Rune: "Holger is the guy who runs a lot, and he runs really well. He read the game really well. He's very talented.

"He has a good touch. He doesn't give you any rhythm, because as soon as he has a chance he tries to do drop shots, he tries to hit full power, goes to the net, returns and goes to the net, then serves to the net.

"He doesn't give you rhythm to put pressure on him to play your style."

Rune sees Rublev as a major threat to his prospects of a second title at this level, but the 19-year-old Dane is not short of self-belief.

"I expect for myself to push full. It's the last push, it's the last match of the tournament," Rune said. "Obviously he had three sets as well, so he must be feeling the legs a little bit, I hope.

"It's going to be great. We've played each other twice. It's one-all head to head, so it's going to be interesting, for sure.

"I've just got to stay in the moment, go for it against the best players in the world, and Andrey has been showing that for many years now, he's been top five, six for many years, so I've got to play my best. I've got to take it, because he's not going to give it to me."

Defending champion Stefanos Tsitsipas and Daniil Medvedev were both dumped out at the quarter-final stage of the Monte Carlo Masters, with Taylor Fritz and Holger Rune advancing.

Seeded second and third respectively, Tsitsipas and Medvedev began Friday as the tournament's highest-ranked players following Novak Djokovic's shock exit, but both found themselves on the receiving end of comprehensive defeats.

World number three Tsitsipas was the victim as Fritz claimed his first victory over a top-10 ranked player on clay, ending the Greek's 12-match winning run at the competition with a 6-2 6-4 success.

Tsitsipas – who won the event in both 2021 and 2022 – was unable to contain Fritz as the American hit a series of huge winners en route to his third Masters 1000 semi-final.

Fritz will face Andrey Rublev in the final four after the fifth seed saw off the challenge of German qualifier Jan-Lennard Struff, posting a 6-1 7-6 (7-5) win.

Meanwhile, Medvedev came up short in his tussle with Rune, as the 19-year-old waltzed into his second Masters 1000 semi-final with a 6-3 6-4 triumph.

"It wasn't easy for sure, it's always tough to play Daniil," Rune said after his win. "It was actually my first time playing against him in a real match, but we've practised tonnes of times. 

"I have huge respect for everything he's done. In the last week it was not easy to stop him, but I'm happy I managed to do it."

Rune now has a 10-8 record in meetings with his fellow top-10 players, and he will have to win another such duel to make the final, with Jannik Sinner his semi-final opponent.

Sinner needed 76 minutes to beat fellow Italian Lorenzo Musetti 6-2 6-2, and the 21-year-old now has the chance to reach his third Masters 1000 final, having previously finished as runner-up at two editions of the Miami Open.

Lorenzo Musetti stunned Novak Djokovic to seal a "dream" victory and a quarter-final spot in the Monte Carlo Masters.

Falling to a 4-6 defeat in the first set, Musetti responded to win 7-5 in the second and 6-4 in the third following a rain delay.

The 21-year-old overcame the world number one in a mammoth two-hour, 54 minute encounter and capitalised on weak serves from the Serbian – breaking his opponent eight times en route to a career high victory.

Emotions were high for Musetti, who said afterwards: "I am struggling not to cry. It is an emotional win because it was a really long match. Three-hour match and suspended by rain.

"It was not easy conditions because it was a little bit windy and cold. Not like we used to play in the recent days. I am really proud of myself and I can see on the screen. I am struggling not to cry because it is a dream for me."

Musetti's reward is a clash with Jannik Sinner in the quarter-finals, who trailed Hubert Hurkacz by a set and a break before rallying to a 3-6 7-6 (8-6) 6-1 triumph – sending him into the last-eight in six of the seven events he has played this season.

Elsewhere, Andrey Rublev earned a 50th tour-level win on clay with a 7-6 (6-4) 6-2 victory over Karen Khachanov, who was his doubles partner earlier this week before the pair suffered elimination against Wesley Koolhof and Neal Skupski.

Rublev will meet German qualifier Jan-Lennard Struff in the next round, who secured a major upset earlier in the day by eliminating world number four Casper Ruud.

A 6-1 7-6 (10-8) victory earned Struff his first top 10 win since June 2021, when he defeated Daniil Medvedev in Halle, and advances to his first ATP Masters 1000 quarter-final since Cincinnati in 2020.

Novak Djokovic returned to action with an "ugly" win over Ivan Gakhov in the second round of the Monte Carlo Masters on Tuesday.

The world number one was competing for the first time in five weeks after missing the Indian Wells Open and Miami Open due to being unable to enter the United States.

Djokovic, who has since been cleared to compete in the US Open later this year, faced a spirited challenge from world number 198 Ivan Gakhov but advanced 7-6 (7-5) 6-2.

Gakhov broke his somewhat rusty opponent in the seventh game, but Djokovic hit back instantly as the opening set went to a tie-break.

The Serbian appeared rattled at various points, but an unforced error from Gakhov paved the way for Djokovic to open up some day light and take the opener.

The second set went the way of serve until the fifth game, when a double fault from Gakhov gave his opponent the chance to capitalise and see out the win.

"It was probably, if you can call it this way, an ugly tennis win for me today," Djokovic said in his on-court interview. "I haven't played my best, particularly in the first set. 

"And I kind of expected that that was going to happen in a way with swirly conditions, a lot of wind today, changing directions.

"It's different practising and then playing an official match on clay, where I guess no two bounces are the same. It's always quite unpredictable what's going to happen. 

"But all in all, I'm just pleased with the way I held my nerves I think in the important moments and I managed to clinch the two-set win."

Defending champion Stefanos Tsitsipas also advanced to the last 16 with a walkover win over Benjamin Bonzi, who retired with a wrist injury when 4-1 down in the opening set.

Fifth seed Andrey Rublev had a tougher time of things against Jaume Munar as he recovered from a set down to progress 4-6 6-2 6-2

Hubert Hurkacz was the other seeded player in action on Tuesday and defeated Jack Draper 6-3 6-7 (7-3) 7-5.

Second seed Stefanos Tsitsipas was bundled out of the Miami Open in straight sets during Tuesday's fourth round by 2022 US Open semi-finalist Karen Khachanov.

The Russian 14th seed prevailed 7-6 (7-4) 6-4 over Tsitsipas in one hour and 34 minutes, powering 25 winners and making only nine unforced errors, compared to the Greek's 14.

Khachanov's triumph ended a winless 0-6 head-to-head record against Tsitsipas, while it also snapped his own 23-match losing streak against top-10 opponents.

The Russian, who also made this year's Australian Open semi-finals, has qualified for four of his six tour-level events this year.

Khachanov will take on 25th seed Francisco Cerundolo in the quarter-finals, with the Argentinian fighting back to get past Lorenzo Sonego 3-6 6-3 6-2 in just over two hours.

Defending champion and top seed Carlos Alcaraz had less trouble against Tommy Paul, cruising into the quarter-finals with a 6-4 6-4 victory.

Alcaraz won the winners' count 24-9, setting up a quarter-final clash with ninth seed Taylor Fritz, as the Spanish 19-year-old chases a rare Sunshine Double, having won last week's Indian Wells Open.

Fritz progressed after getting past seventh seed Holger Rune 6-3 6-4 in 86 minutes, sending down eight aces and 22 winners for the match.

Fourth seed Daniil Medvedev played late into the evening after a lengthy rain delay in Miami, but made light work of Quinten Halys 6-4 6-2, triumphing just past 1:30am local time.

Medvedev, who is into his third straight Miami quarter-final, will face American qualifier Christopher Eubanks in the last eight after he got past Frenchman Adrian Mannarino 7-6 (7-2) 7-6 (7-5) in another rain-delayed contest.

Italian 10th seed Jannik Sinner knocked off sixth seed Andrey Rublev 6-2 6-4, advancing to face Emil Ruusuvuori after he beat Botic van de Zandschulp 4-6 6-4 7-5.

Top seed and reigning champion Carlos Alcaraz dished out a bagel as he continued his outstanding form with a straight-sets victory over Dusan Lajovic to ease into the Miami Open fourth round on Sunday.

Alcaraz, who triumphed at last week's Indian Wells Open, beat the 76th-ranked Serbian 6-0 7-6 (7-5) in one hour and 32 minutes.

The 19-year-old Spaniard hit 26 winners compared to Lajovic's eight, while Alcaraz also sent down three aces on a 75 per cent first serve percentage.

Alcaraz won the first frame to love in 32 minutes, registering his fourth career bagel at ATP Masters 1000 level, equaling the most by a teenager alongside Rafael Nadal.

The world number one will face 2023 Australian Open semi-finalist Tommy Paul in the fourth round after the American got past 20th seed Alejandro Davidovich Fokina 6-3 7-5.

Third seed and 2022 Miami Open finalist Casper Ruud blew a first-set lead to lose 3-6 6-4 6-4 to Botic Van De Zandschulp.

The Dutchman improved his head-to-head record against Ruud to 3-1 with his first-ever top five win, with the Norwegian left to lament converting only two of 15 break points.

Ninth seed Taylor Fritz progressed into the fourth round with a 6-4 6-4 win over Denis Shapovalov, improving his head-to-head record against the Canadian to 4-5. Fritz committed only eight unforced errors and did not face one break point.

Jannik Sinner maintained his excellent hard-court form with his 18th win this season on the surface, as he defeated Grigor Dimitrov 6-3 6-4 in one hour and 28 minutes. The Italian 10th seed will be Andrey Rublev in the next round.

Sixth seed Rublev needed less than an hour to get past Miomir Kecmanovic 6-1 6-2, while compatriot Daniil Medvedev advanced via a walkover against Alex Molcan due to a right hip injury.

Seventh seed Holger Rune cruised past Diego Schwartzman 6-4 6-2, while Finland's Emil Ruusuvuori got past Taro Daniel 6-3 7-6 (7-3).

World number one Carlos Alcaraz wasted no time in advancing to the Miami Open third round with a straight-sets win over Facundo Bagnis in just 64 minutes, while 13th seed Alexander Zverev suffered an early exit on Friday.

Reigning US Open champion Alcaraz eased past Bagnis 6-0 6-2, firing 12 winners and three aces for the match, committing only 11 unforced errors.

The Spaniard won the first set in 24 minutes, marking the first time he has won an opening frame 6-0 at an ATP Masters 100 event. It was also the first bagel he has dished out since beating Bagnis in Umag last year.

"I knew that I needed to be focused for my first match," Alcaraz said after his win, having triumphed in Indian Wells last week. "To start a new tournament is never easy, different conditions.

"I have to be ready to get used to these new conditions, but I was really focused on the match from the beginning, and I'm happy with the way that I played. I try to improve every day."

Alcaraz will face Dusan Lajovic after he beat 30th seed Maxime Cressy 6-4 7-6 (7-2), having knocked off Andy Murray in the first round.

Zverev was the highest seed to bow out on Friday, going down 6-0 6-4 to Japan's Taro Daniel, who beat world number four Casper Ruud last month in Acapulco.

Daniel triumphed in 73 minutes against the German, hitting 17 winners and committing only two unforced errors for the match, while Zverev gave up 18.

The Japanese wild card will meet Emil Ruusuvuori in the third round after the Finn beat 22nd seed Roberto Bautista Agut 6-4 7-6 (7-5) to open up that section of the draw.

Third seed Ruud also had few problems getting past Ilya Ivashka 6-2 6-3 to set up a clash with Botic van de Zandschulp after his three-set win over Alexei Popyrin.

Sixth seed Andrey Rublev overcame J.J. Wolf 7-6 (7-3) 6-4, having been broken in the opening game of what was a tight contest.

Jannik Sinner beat Laslo Djere 6-4 6-2, marking his 16th win out of 20 appearances at the Sunshine Double (Indian Wells and Miami), with only three other players – Novak Djokovic, Alcaraz and Hubert Hurkacz – having as many wins within their first 20 matches.

Ninth seed Taylor Fritz defeated fellow American Emilio Nava 6-4 6-1, and will face Denis Shapovalov in round three after he beat Guido Pella 6-3 3-6 6-3.

American 16th seed Tommy Paul came from a set down to beat Marc-Andrea Huesler 5-7 6-3 6-4, while seventh seed Holger Rune beat Martin Fucsovics 6-3 7-5.

Two of the Indian Wells Masters' top-three seeds have failed to reach the final 16 after Casper Ruud fell 6-4 7-6 (7-2) at the hands of Cristian Garin on Sunday.

Ruud, the third seed, joined second seed Stefanos Tsitsipas with an early exit after a timid display, with just 17 winners to go with 17 unforced errors against Chile's Garin.

Meanwhile, Garin took his opportunity against the world number four with both hands, rattling off 39 winners with 24 unforced errors as he made the decision to take the match on and not die wondering.

Garin, who already defeated 29th seed Yoshihito Nishioka in the second round, will meet his third seeded opponent in a row in the quarter-final when he takes on Spain's 23rd seed Alejandro Davidovich Fokina.

Davidovich Fokina eliminated 13th seed Karen Khachanov 6-3 1-6 6-4, but it was still a strong day for the Russians as top hopefuls Daniil Medvedev and Andrey Rublev advanced.

Medvedev, the fifth seed, was tested in his 6-2 3-6 6-1 victory over Belarus' Ilya Ivashka, while sixth seed Rublev saw off France's Ugo Humbert 7-5 6-3 without much issue.

Waiting for Rublev in the quarter-final is Briton Cameron Norrie after his 6-7 (5-7) 7-5 6-2 battle against Taro Daniel, while Alexander Zverev beat Emil Ruusuvuori 7-5 1-6 7-5 to book a tantalising clash with Medvedev.

In a poor day for the Australians, Jason Kubler went down 6-3 6-2 against 14th seed Frances Tiafoe, and Jordan Thompson could not follow up his incredible upset against Tsitsipas, falling 6-3 7-6 (8-6) to Chile's Alejandro Tabilo.

World number three Stefanos Tsitsipas has left the Indian Wells Masters without a win after a shock 7-6 (7-0) 4-6 7-6 (7-5) loss to Jordan Thompson on Friday.

Tsitsipas, the second seed with Novak Djokovic not present, received a bye through to the second round, and he showed some rust with three double faults in the opening set. 

Thompson capitalised, with an incredible 21 winners to only two unforced errors in the first set, and he closed it out with 15 winners and four unforced errors in the deciding frame for the biggest win of his career.

The Australian will now meet Chile's Alejandro Tabilo in the third round after he upset 32nd seed Maxime Cressy in a gruelling 7-6 (7-3) 7-6 (15-13) triumph.

Meanwhile, it was smooth sailing for third seed Casper Ruud in his 6-2 6-3 victory over Diego Schwartzman, and a similar story for fifth seed Daniil Medvedev in his 6-4 6-3 result against Brandon Nakashima.

Alexander Zverev, the 12th seed, had no issues in his 6-3 6-1 domination of Pedro Cachin in 77 minutes, and 13th seed Karen Khachanov also took exactly 77 minutes to see off Oscar Otte 6-3 6-3.

England's 10th seed Cameron Norrie breezed past Tung-lin Wu 6-2 6-4, while Italy's 20th seed Matteo Berrettini suffered an early 7-6 (7-5) 0-6 6-3 exit at the hands of Japan's Taro Daniel.

In the late window, after a lengthy weather delay, 14th seed Frances Tiafoe won his all-American showdown against Marcos Giron 6-2 6-2.