Daniil Medvedev goes into Sunday's Australian Open final against Novak Djokovic in incredible form.

The Russian star extended his winning streak to 20 matches with a straight-sets victory over Stefanos Tsitsipas in the semi-finals on Friday.

Medvedev became the 25th man in the Open Era to record a Tour-level winning streak of 20 matches. He is the sixth active player to manage the feat, joining Djokovic, Roger Federer, Rafael Nadal, Andy Murray and Juan Martin del Potro.

The 25-year-old's run has not only been utterly dominant, but also included some rather impressive wins.

Of his 20 victories, 12 have come against top-10 players, including Djokovic. Since November, Medvedev has beaten every other member of the top 10 except Federer, who has been out of action.

"It's great to know this. It's a pity that Roger is not playing. I would love to have played him. I'm not saying anything. I just would love to play against him. I mean, to play against Roger is always a privilege. Against Novak, Rafa, Roger," Medvedev said after his win over Tsitsipas.

"But it's great to hear this. I mean, happy about myself, because I remember one moment when I was already playing quite good I actually was struggling with the top-10 guys when I was maybe around top 20 or top 30.

"It's great to hear this and I'm really happy about it."

Along with Djokovic and Nadal, Medvedev's run has also included wins over Dominic Thiem, Alexander Zverev (three times), Andrey Rublev, Matteo Berrettini and Tsitsipas.

In his 20-match streak, Medvedev has won 44 sets and lost just seven, and two of those were in his five-set victory over Filip Krajinovic in the third round.

Medvedev has won three of his past four meetings with Djokovic, who edges their overall head-to-head 4-3.

His run will have Medvedev full of confidence as he bids to win a first grand slam title, needing to overcome the record eight-time champion in Melbourne to do so.

Novak Djokovic will take the advantage of having an extra day's rest into the Australian Open final against the red-hot Daniil Medvedev.

Djokovic is set to compete in his 28th grand slam final and ninth in Melbourne as the Serbian star eyes an 18th major title on Sunday.

The 33-year-old looked in good form in a semi-final thrashing of Aslan Karatsev on Thursday – 24 hours before Medvedev impressively dispatched of Stefanos Tsitsipas.

For the second year in a row, Djokovic will have an extra day's rest over his opponent ahead of the decider.

Since 2000, players who have had the extra day's rest have won 12 and lost nine of the 21 finals. Djokovic has had the slight advantage four times – and four times he has not – and won all eight finals.

Given he has battled a suspected abdominal injury at this year's tournament, the additional day could be an important factor for Djokovic.

He faces Medvedev, who is on a 20-match winning streak that has included 12 victories over top-10 players.

The latest of those was a 6-4 6-2 7-5 mauling of Tsitsipas in their semi-final on Friday.

A key for Medvedev in that success, in which he endured a third-set blip, was that it came in two hours, nine minutes.

Since 2000, men who won the second semi-final in less than three hours are 6-5 in deciders. That record drops to 3-7 when the last-four clash has exceeded three hours.

Of the three that have managed it after marathon wins, Djokovic achieved it twice – in 2012 and 2015, while Rafael Nadal was the other in 2009, when he beat Roger Federer in the final after winning an epic against Fernando Verdasco.

It leaves the extra day's rest likely to be less of a factor on Sunday as both men chase history.

Entering Australian Open final with an extra day's rest since 2000
2020: Novak Djokovic (won against Dominic Thiem)
2019: Rafael Nadal (lost against Novak Djokovic)
2018: Marin Cilic (lost against Roger Federer)
2017: Roger Federer (won against Rafael Nadal)
2016: Novak Djokovic (won against Andy Murray)
2015: Andy Murray (lost against Novak Djokovic)
2014: Stan Wawrinka (won against Rafael Nadal)
2013: Novak Djokovic (won against Andy Murray)
2012: Rafael Nadal (lost against Novak Djokovic)
2011: Novak Djokovic (won against Andy Murray)
2010: Andy Murray (lost against Roger Federer)
2009: Roger Federer (lost against Rafael Nadal)
2008: Jo-Wilfried Tsonga (lost against Novak Djokovic)
2007: Roger Federer (won against Fernando Gonzalez)
2006: Marcos Baghdatis (lost against Roger Federer)
2005: Marat Safin (won against Lleyton Hewitt)
2004: Marat Safin (lost against Roger Federer)
2003: Andre Agassi (won against Rainer Schuttler)
2002: Thomas Johansson (won against Marat Safin)
2001: Andre Agassi (won against Arnaud Clement)
2000: Andre Agassi (won against Yevgeny Kafelnikov)
Wins: 12 Losses: 9

Daniil Medvedev believes he has "nothing to lose" in Sunday's Australian Open final against Novak Djokovic.

Medvedev reached his second grand slam decider after an impressive 6-4 6-2 7-5 victory over Stefanos Tsitsipas in their last-four clash in Melbourne on Friday.

The Russian fourth seed became the 25th man in the Open Era to record a Tour-level winning streak of 20 as he continued his incredible form.

Medvedev said in an on-court interview all the pressure in the final would be on Djokovic, who has won the Australian Open a record eight times.

Despite seeking his maiden grand slam crown, the 25-year-old – who has won three of his past four meetings with Djokovic – said he had nothing to lose in the final.

"I think he's the favourite because he didn't lose. In eight occasions that he was here in the semis he won the tournament. Me, I'm, how you can call it, I don't know how you call it in English, not an outsider, but I'm the challenger, the guy that challenges the guy who was eight times in the final and won eight times. And I'm happy about it," Medvedev told a news conference.

"I like to play against Novak. We have, since the first one when I was ranked 60, we had always tough matches physically, mentally. And he's one of the greatest tennis players in the history of tennis. So playing the final against him is superb. I'm really happy about it. Let's see what happens on Sunday.

"When I say no pressure, for sure when we get out there we both feel pressure. I want to win my first one. He wants to win number 18. We don't know for who the crowd is going to be. It's all the small details.

"I think if we talk in general, well, I have nothing to lose, to be honest."

Medvedev hit 46 winners and 21 unforced errors against Tsitsipas, overcoming a third-set blip to close out his victory.

As the Rod Laver Arena crowd attempted to get Tsitsipas back into the contest, Medvedev claimed a key break in the 11th game of the third set with a tremendous backhand pass down the line, which he celebrated with a dance.

"They [the crowd] were mostly for him, and that was, you know, the moment that I won the match, we should say. Of course you have to serve after, but that was important moment. So I wanted them to recognise me, I would say, because the shot was unbelievable, I think one of my best shots in my career," Medvedev said.

"Actually, my legs were facing the other way of the court because I didn't have time, so I have no idea how I made this, and I was really happy about it."

Stefanos Tsitsipas paid tribute to Daniil Medvedev for his performance in their Australian Open semi-final on Friday.

Medvedev set up a clash against Novak Djokovic in the decider in Melbourne after producing an impressive performance in a 6-4 6-2 7-5 victory over Tsitsipas.

The Russian fourth seed became the 25th man in the Open Era to record a Tour-level winning streak of 20 as he continued his incredible form.

Tsitsipas, who has lost six of seven meetings with Medvedev, credited the 2019 US Open runner-up for his display.

"Everyone saw what just happened out there. I'm the last person you should be asking this," the Greek fifth seed told a news conference.

"I was just focused on my game, and he put out his show. He became Daniil Medvedev for three sets in a row."

Medvedev hammered 46 winners to go with just 21 unforced errors, while dropping serve just once.

He will be aiming for his maiden grand slam title when he faces Djokovic, a player he has beaten in three of their previous four meetings.

"I wouldn't be surprised to see Daniil win the tournament. But, you know, it's a strange scenario," Tsitsipas said.

"I played Rafa [Nadal] here two years ago. I found his performance against me that day phenomenal. I was 100 per cent sure he was gonna win the tournament. And I ended up being wrong.

"Who knows? I don't know. Like, Djokovic is playing well too. Look, I'm not a betting website. I don't know what to say. Might be Medvedev, would be good for him, good for tennis."

Daniil Medvedev produced an impressive performance to outclass Stefanos Tsitsipas in straight sets and book an Australian Open final meeting with Novak Djokovic.

Medvedev was in irresistible form on Rod Laver Arena, needing just over two hours to get past Tsitsipas 6-4 6-2 7-5 on Friday and move into his second grand slam final.

The Russian fourth seed extended his winning streak to 20 matches heading into Sunday, when he will be aiming to claim his maiden major title.

Tsitsipas, coming off an incredible comeback win over Rafael Nadal in the last eight, had the backing of the Melbourne crowd, but no answers to Medvedev, who won for the sixth time in seven meetings between the pair despite a third-set blip.

After an entertaining but largely uneventful start, Medvedev broke for 3-2, a wonderful backhand winner down the line followed up by Tsitsipas sending a forehand just long.

Medvedev was boosted by the break, holding to love in the next game as Tsitsipas' errors mounted, and the Russian closed out the first set despite an increasingly boisterous crowd urging the Greek on.

The baseline exchanges were being dominated by Medvedev, who broke in the third game of the second set on the back of a whipped forehand winner and another down the line.

Medvedev broke to love in the seventh game and he lost just three points on serve in the second set to take complete control.

He continued to dictate points and hit winners at will, breaking serve again to begin the third set, before a blip – a tame forehand into the net seeing Tsitsipas break back, much to the delight of most fans in Rod Laver Arena.

Medvedev saved a break point in the eighth game with an ace down the T to dampen the enthusiasm of the crowd.

He came from 0-30 down to hold for 5-5 in what would prove a key moment, a spectacular backhand pass seeing him break serve – and into a dance – in the following game on his way to victory.

Data Slam: Medvedev in magical form ahead of Djokovic final
Medvedev became the 25th man in the Open Era to record a Tour-level winning streak of 20, and he is just the sixth active player to do so, joining Djokovic, Nadal, Roger Federer, Andy Murray and Juan Martin del Potro. He is also on a 12-match winning streak against top-10 opponents.

WINNERS/UNFORCED ERRORS
Medvedev – 46/21
Tsitsipas – 19/30

ACES/DOUBLE FAULTS
Medvedev – 17/2
Tsitsipas – 3/3

BREAK POINTS WON
Medvedev – 5/9
Tsitsipas – 1/3

Novak Djokovic ended Aslan Karatsev's dream run to reach his ninth Australian Open final on Thursday.

Djokovic, who has been dealing with an abdominal injury in Melbourne, brushed past qualifier Karatsev 6-3 6-4 6-2 in their semi-final on Rod Laver Arena.

The world number one has won the Australian Open every time he has reached the semi-finals, and he is on track again ahead of facing either Daniil Medvedev or Stefanos Tsitsipas in Sunday's decider.

Djokovic moved into his 28th grand slam final – a tally bettered only by Roger Federer (31) – as he targets an 18th major title.

Karatsev held his own in the early baseline exchanges and dug himself out of a 0-30 hole in the sixth game.

But he could not deny Djokovic in his next service game, broken to love when he pulled a backhand wide as the Serbian won 10 straight points and the set.

Djokovic broke again in the third game of the second set following a Karatsev double fault, and a fortunate net cord saw him into a 4-1 lead as he took complete control.

Karatsev got one of the breaks back and pushed for the other, but Djokovic – who had won all 19 of his previous meetings with qualifiers at grand slams – closed out the second set.

Just as Karatsev seemed to be working his way back into the contest and the duo exchanged breaks to begin the third, Djokovic took a 3-2 lead as he won the final four games of the match.

Data Slam: Age still no barrier for Djokovic
Djokovic became the first man in the Open Era to reach three Australian Open finals after turning 30. The 33-year-old has dominated in Melbourne, and his run continues.

WINNERS/UNFORCED ERRORS
Djokovic – 30/14
Karatsev – 24/30

ACES/DOUBLE FAULTS
Djokovic – 17/2
Karatsev – 6/2

BREAK POINTS WON
Djokovic – 6/7
Karatsev – 2/5

Rafael Nadal insists he was not struggling with injury as he crashed out of the Australian Open but acknowledged a lack of match practice could have contributed to his quarter-final collapse against Stefanos Tsitsipas.

The 20-time grand slam champion was dealing with a back issue at the start of the tournament, although he managed to advance to the last eight without dropping a set.

That impressive run appeared set to continue as Nadal won the opening two sets against fifth seed Tsitsipas, only for the match to turn on its head after a tie-break in the third

Tsitsipas emerged a 3-6 2-6 7-6 (7-4) 6-4 7-5 winner after just over four hours, becoming only the second player – after Fabio Fognini – to triumph from two sets down against Nadal at a major.

Post-match questions put to Nadal predictably centred on the potential impact of his back woe, but he insisted there was no physical pain on Wednesday.

However, reflecting on "just another story in my tennis career", the Spaniard repeatedly referred to the difficulty of preparing for a tournament amid such problems.

"I think I was in great condition before here," he said. "Then I've been a bit unfortunate for what happened for 20 days, and then I fight back to play, I think, decent tennis.

"Today wasn't enough. It was close, just that's tennis. That's all. That's the sport. One player wins; the other loses.

"Today I lost, so the only thing that I can do is try to be better next time, and today congratulate him."

Claiming the key was instead two costly mini-breaks in the breaker, Nadal added: "I am not complaining much.

"I think physically, it has been a very humid day out there. Physically I was not fantastic but not bad, you know? I was able to fight until the end, and that's it.

"The whole issue is I missed an easy smash at the beginning of the third, an easy forehand with 2-1 in the tie-break, and then another smash in that tie-break.

"That tie-break I made a couple of mistakes that I can't make to win the match. He played well then later. Well done."

Nadal was chasing a record-breaking 21st major championship, yet only one of those triumphs has come in Melbourne – back in 2009.

The 34-year-old has lost four finals, as well as regularly dealing with injury concerns at the first slam of the season.

But asked if he felt "cursed", he responded firmly: "No. No, no, no. That's sport. Sometimes things go well; other times things goes worse.

"Unfortunately for me, in this tournament, I had more injuries than in the others. Then matches that you lose like today against one of the best players of the world is something that happens.

"No, no, no. Not at all feeling unlucky for me and not at all complaining about my luck here in Australia.

"Everyone has what we deserve. Tennis isn't a sport that is fair. I have what I deserved in my career, and over here in Australia I had chances, but I was not able to convert it. That's all. I didn't deserve more."

Use of the word "unlucky" brought a similar response, as Nadal insisted he was not looking for excuses.

"We can find excuses or reasons or maybe this quarantine that we need to be more time in the room than usual, yes, maybe," he said. "But I am not the guy that is going to find excuses on that or going to complain about what happened, no.

"Just accept. I never considered myself an unlucky person at all. It doesn't matter the injuries that I had. I think I am very lucky person.

"The only thing that I can do is just keep going. I put myself in a position, even with the challenges that I faced, that I was in quarter-finals with two sets up, close to being in the semi-finals.

"So, it has been a chance lost, yes, but life continues. I hope to keep having chances. Well, I'm going to keep fighting for it."

Stefanos Tsitsipas struggled to explain how he pulled off a remarkable turnaround against Rafael Nadal to reach the last four of the Australian Open.

The fifth seed had only once before beaten Nadal and was facing a seventh career defeat to the 20-time grand slam champion as he fell two sets behind on Rod Laver Arena.

Instead, Tsitsipas rallied after a third-set tie-break to triumph 3-6 2-6 7-6 (7-4) 6-4 7-5 and advance to a semi-final against Daniil Medvedev.

The Greek joined Fabio Fognini, at the 2015 US Open, as the only players to overturn a two-set deficit to beat Nadal at a major.

Victory had seemed particularly remote as Tsitsipas struggled to make any inroads on Nadal's serve. He won only 10 receiving points across the first two sets - two of those coming courtesy of double faults - and had to wait until the final game before the breaker in the third to add an 11th.

Then, to the victor's bemusement, the match turned, ending Nadal's run of 35 consecutive set wins at grand slams.

"I have no words to describe what has just happened on the court," Tsitsipas said. "My tennis speaks for itself.

"It's an unbelievable feeling to fight at such a high level and leave it out on the court. I started very nervously.

"I don't know what happened after the third set. I flew like a bird and everything worked for me."

Tsitsipas, who made just four unforced errors in the pivotal third set, added: "I focused on staying calm and holding my nerves today. I have failed to do so in some of my matches.

"I stayed calm in the tight moments and I kept everything to myself. I am really happy with the attitude that I showed on the court."

Now Tsitsipas must take on another player he has only previously defeated once, although that win came in his most recent meeting with Medvedev in 2019.

"He plays very well and has been very consistent, with lots of consecutive wins," Tsitsipas said. "I need to recover and have a good ice bath.

"I am looking forward to the match and each match I play here is an opportunity to play my best tennis. It will be amazing to see the crowds again."

Rafael Nadal suffered a remarkable collapse to exit the Australian Open at the quarter-final stage despite earlier leading Stefanos Tsitsipas by two sets.

Only once in Nadal's grand slam career had he previously let a two-set lead slip and such a slump appeared entirely improbable as he dominated Tsitsipas on Rod Laver Arena.

But the 20-time major champion, chasing a record-breaking 21st title, struggled to recover his momentum after dropping a set for the first time in the tournament when the third went to a tie-break.

The courageous Tsitsipas grew in confidence and landed a momentous second career win over Nadal to reach a third slam semi after a four-hour 3-6 2-6 7-6 (7-4) 6-4 7-5 epic.

Daniil Medvedev secured his first Australian Open semi-final berth after continuing his domination of fellow Russian Andrey Rublev in straight sets.

Medvedev starred in the Melbourne heat as countryman Rublev faded, winning 7-5 6-3 6-2 on Wednesday to reach his third grand slam semi-final, equalling Alex Metreveli for third place on the Open Era list for most major semis by a Russian man.

World number four Medvedev – the fifth Russian man to reach the Australian Open semis in the Open Era, after Metreveli (1972), Yevgeny Kafelnikov (1999-2000), Marat Safin (2002, 2004-05) and Aslan Karatsev (2021) – will face either 20-time slam champion Rafael Nadal or Stefanos Tsitsipas for a spot in the decider.

Medvedev and Rublev were meeting for the fourth time on the ATP Tour – their second in a grand slam quarter-final, with the former winning all previous meetings in straight sets. 

Runner-up at the 2019 US Open, Medvedev had a glimpse on Rublev's serve before breaking in the sixth game for a 4-2 lead, only to hand the break straight back to his countryman.

The tense battle continued behind closed doors on Rod Laver Arena as a tie-break loomed large, until Medvedev closed out the 46-minute set on Rublev's serve.

It was a similar theme in the second set, with little separating the two Russian hopefuls under the warm Melbourne sun.

Rublev, who won five ATP Tour titles last year – more than any other player, while earning a joint-best 41 wins in 2020 alongside world number one Novak Djokovic, continued to take the match to Medvedev.

Three break-point chances came Rublev's way in the seventh game, but he was unable to convert and Medvedev made him pay as the world number four broke the very next game before earning a two-sets-to-love lead.

Rublev – eyeing his first slam semi – deteriorated in the warm conditions, often hunched over between points while trying to keep cool in the shade, as Medvedev cruised.

Data Slam: Medvedev extends streak
There is no stopping Medvedev at the moment after he extended his winning streak to 19 matches, already a career-best run – dating back to the Vienna Open last October.

WINNERS/UNFORCED ERRORS
Medvedev – 30/33
Rublev – 20/39

ACES/DOUBLE FAULTS
Medvedev – 14/4
Rublev – 8/3

BREAK POINTS WON
Medvedev – 5/11
Rublev – 1/5

Australian Open fans are set to return to Melbourne Park from Thursday after the Victorian government confirmed the lifting of restrictions following a five-day lockdown amid the coronavirus pandemic.

While the number of supporters set to attend remains unknown, fans will be back in their seats for the beginning of the Australian Open semi-finals, with record-chasing Serena Williams set to face three-time grand slam champion Naomi Osaka in Melbourne.

Defending men's champion Novak Djokovic will play the tournament’s surprise package, Russian qualifier Aslan Karatsev - who is the first player to reach a semi-final on their grand slam debut.

Djokovic was on court when the lockdown came into effect last Friday, with the five-day "circuit-breaker" designed to control an outbreak of the UK coronavirus strain.

Part of the third round, the fourth round and quarter-finals of singles action were played behind closed doors after a series of outbreaks in Victoria.

The state has recorded 12 more active cases since the lockdown was implemented but, with none discovered in the past 24 hours, Victorian premier Daniel Andrews announced restrictions will be eased.

"I'm very, very pleased to announce that the restrictions will come off, almost all of them, at midnight tonight," Andrews told reporters on Wednesday.

"From 11:59pm [Wednesday local time], the restrictions will be dropped [but] masks will be required indoors and outdoors when you can't socially distance."

The stage-four restrictions meant residents could not leave their homes for any other reason than work, shopping for groceries, exercise or the giving or receiving of medial care.

This year's delayed Australian Open has had crowds capped at 30,000 per day with original COVID-19 restrictions, but new limits are yet to be determined for the rest of the tournament.

"There will be meetings this afternoon [to determine] what is a safe number," Andrews said.

"They already were reduced, they may have to be reduced further, but that matter will be resolved in the next few hours."

Aslan Karatsev said finding stability off the court has helped him become the revelation of this year's Australian Open after the qualifier marched on to the semi-finals.

The Russian became the first qualifier to reach the last four of a major since Vladimir Voltchkov, famously in borrowed shorts, did so in 2000 at Wimbledon.

It was Pete Sampras who eventually blew away Voltchkov's threat at the All England Club on his way to another title.

And it turns out there is a connection between Karatsev and Voltchkov, with both men now calling Minsk their home.

But whereas Voltchkov is Minsk born and bred, Karatsev has taken a roundabout route to setting down roots in the capital of Belarus.

He explained on Tuesday how he was born in the Russian city of Vladikavkaz before moving as a toddler to Israel with his family and living there until the age of 12, when he and his father returned to Russia, spending time in the city of Taganrog.

Tennis took him to training bases in Moscow, then Halle in Germany, Barcelona, and finally Minsk.

It is in Minsk that Karatsev has linked up with former ATP professional Yahor Yatsyk, a man only one year his senior but already settling into coaching.

As Grigor Dimitrov succumbed to injury and slid to a four-set defeat against Karatsev on Tuesday, the unlikely figure in the final four reflected on his long road to this point.

"Yes, I was moving I would say too much," Karatsev said of his nomadic existence.

"In the end I found a coach, Yahor Yatsyk, and this is the right guy for me. He's helped me a lot, more the mental part, and then of course there is the technical stuff as well.

"I like to work with him. We're living in Minsk. We're practicing there."

Karatsev is the lowest-ranked man to reach a grand slam semi-final since Goran Ivanisevic, who won Wimbledon in 2001 on a wildcard entry while ranked 125th in the world.

His charge through the draw makes him only the second qualifier to advance to the Australian Open last four, after Bob Giltinan in December 1977.

"Of course it's amazing that I passed to the semi-finals from qualifying," Karatsev said. "I'm just trying to enjoy the moment and not thinking about that too much and playing from round to round."

He and Yatsyk set the goal of reaching the top 100, which Karatsev had not managed before getting to Melbourne.

Before this fortnight he stood at 114th in the rankings, but he will hurtle to a double-digit ranking next week.

"I think the key is to find the right team, the right coach that I found. I was really lucky to find him," Karatsev said.

"We just met in one tournament. We were saying, 'Okay, let's try to work together', and it's really a big luck that we started to work together and I have a good team around me."

Before he encountered Yatsyk, who as a player did not crack the top 1,000 in singles, Karatsev had a brief moment when he wondered if he might not make the grade.

"There was a time when I was injured that was a difficult time for me because I recovered after the injury, and then 2017 started, and I started to play again, and again I felt the knee," Karatsev said. "I said, 'Whoa.' I quit again for two and a half months, almost three, and I think this is the most difficult part."

Aslan Karatsev's Cinderella story and historic run continued after sensationally reaching the Australian Open semi-finals as Grigor Dimitrov struggled dramatically with injury on Tuesday.

Former world number three Dimitrov won the opening set and was on track to move through in Melbourne, but he faded alarmingly due to a lower back problem.

Karatsev capitalised to oust his much-more fancied opponent – who was barely able to walk afterwards – 2-6 6-4 6-1 6-2 on Rod Laver Arena, the Russian qualifier and world number 114 becoming the first man in the Open Era to reach the semi-finals on his grand slam debut.

The unheralded 27-year-old also became just the second qualifier to advance to the Australian Open last four after Bob Giltinan in December 1977 as defending champion Novak Djokovic or Alexander Zverev await.

Dimitrov was aiming to reach his second Australian Open semi-final and the final four of a slam for the fourth time in his career, and the Bulgarian star started well.

After being broken in the third game, 18th seed Dimitrov put the set back on serve immediately as he took control of proceedings.

Dimitrov fired down four aces, won 82 per cent of his first serves, hit six winners and made just five unforced errors, while Karatsev's unforced-error count hit 19.

But just as Dimitrov – who had not dropped a set en route to the quarters – looked like the man to beat, he wilted in remarkable scenes as Karatsev won the second set to level the match.

Dimitrov's first-serve winners dipped to 69 per cent – his second serve extremely problematic – while his unforced errors grew to 15 in the second set – and Karatsev took advantage.

The third set was a write-off for Dimitrov, who headed to the locker room for medical treatment after Karatsev cruised to a two-sets-to-love lead.

There were remarkable scenes in the third set, Dimitrov virtually conceding as he was unable to keep up with Karatsev due to the injury.

Dimitrov, who only won 12 points in the third set as he was unable to keep up with Karatsev or generate any power on his serve, emerged for the fourth set but, while he tried to will himself on, it only delayed the inevitable in sad scenes.

Data Slam: Karatsev joins Russian club
Karatsev became the fourth Russian man to reach the Australian Open semis in the Open Era, after Aleksandar Metreveli  (1972),  Yevgeny  Kafelnikov  (1999-2000)  and  Marat  Safin  (2002, 2004-05). He is also the lowest-ranked man to reach the semi-finals of a major since Goran Ivanisevic (125) at Wimbledon in 2001.

WINNERS/UNFORCED ERRORS
Dimitrov – 21/34
Karatsev – 34/44

ACES/DOUBLE FAULTS
Dimitrov – 9/7
Karatsev – 9/6

BREAK POINTS WON
Dimitrov – 4/14
Karatsev – 8/11 

Former world number one and two-time grand slam champion Yevgeny Kafelnikov believes it is "inevitable" that a Russian player will claim major success as the country's male trio flourish at the Australian Open.

For the first time in the Open Era, three Russian men advanced to the quarter-finals of a slam thanks to star Daniil Medvedev, Andrey Rublev and qualifier Aslan Karatsev in Melbourne.

World number four Medvedev – the 2019 US Open runner-up – will face countryman Rublev in the Melbourne Park quarters as Karatsev meets Grigor Dimitrov for a spot in the semi-finals.

Not since Marat Safin at the 2005 Australian Open has a Russian male won a slam, but Kafelnikov is excited about the future.

"We all know that it's inevitable that they're going to win a slam," Kafelnikov, who was the first Russian man to earn a grand slam singles championship via the 1996 French Open before reigning supreme at Wimbledon three years later, told ATPTour.com.

"It's a question of when and where."

Kafelnikov added: "It was really expected that two of them got to where they are. The third one is a big surprise, but a very happy surprise. I'm very happy for Aslan, finally getting his breakthrough.

"He's going to play a lot of tournaments now without any pressure for the remainder of the 2021 season in terms of getting into the main draws and a big pay cheque will also be a huge boost for him. I'm really happy for him."

Kafelnikov, who won 26 singles titles, continued: "To be honest, I would be happy if one of those guys or even both of them surpass me in terms of number of titles and weeks at number one in the world.

"I'd be happy. I'm not going to be jealous about it. My career was very successful, and hopefully they will have even better [careers]."

Rafael Nadal insisted he is not "obsessed" in his quest for further grand slam glory after the 20-time major champion moved through to the Australian Open quarter-finals. 

Nadal advanced to the last eight of the tournament for the 13th time in his illustrious career following Monday's dominant 6-3 6-4 6-2 victory over 16th seed Fabio Fognini.

World number two Nadal is bidding to claim a record 21st slam crown, while the Spanish star is also looking to become the first man in the Open Era to win each of the four majors twice.

As Nadal looks ahead to a showdown with fifth seed Stefanos Tsitsipas, he discussed his motivations, having won everything on offer on the ATP Tour.

"I play tennis. I like tennis," the 34-year-old said. "I like what I am doing. That's the main thing. 

"Of course I am very motivated to win grand slams and to play in the most important events of the year. No doubt about that.

"The only thing that I said is I have never been obsessed to try to be the best or to try to – no, I just did my way. That worked for me.

"I think the ambition is important, to have an ambition, but a healthy ambition. If you have too much ambition then you can be frustrated when you are not able to achieve all the things that you wanted.

"I never approached the sport and my career that way. That's it. I enjoy, I give my best always. I try to compete at my highest standards every day. Sometimes the highest standards are 60 per cent, sometimes they are 100 per cent. But I just try to give my best throughout my career, and that's it.

"For me the main thing is come back home with personal satisfaction that you gave it everything. That's what gives me happiness and makes me stay calm."

Nadal was under an injury cloud heading into the year's first grand slam due to a back problem which forced him to sit out Spain's ATP Cup campaign in Melbourne.

But the 2009 Australian Open champion has looked comfortable at Melbourne Park, where he is yet to drop a set.

"I played first set without a doubt [against Fognini] has been my best level in the tournament," Nadal said. "It's normal, too, because I was able to practice for two days in a row. That makes an important difference. 

"But at the same time, it's important to find positive feelings now. My physical condition needs to keep improving. But I think this match helps, too.

"I was not able to practice the proper way for the last 19 days, but yesterday [Sunday] I started again to increase the amount of work on the practice, and today has been a positive victory with some long points, so that helps for the next match."