Garbine Muguruza's climb to the top of Mount Kilimanjaro should give her belief nothing is impossible on the court, according to coach Conchita Martinez.

The two-time grand slam champion scaled the highest peak in Africa during the off-season, having endured a difficult 2019 that saw her begin this year outside the world's top 30.

But, unseeded at the Australian Open, Muguruza has impressively reached the final, in which American Sofia Kenin awaits on Saturday.

Martinez, who reunited with Muguruza ahead of this season having helped the Spaniard win Wimbledon in 2017, said the 26-year-old's decision to climb Mount Kilimanjaro would hold her in good stead.

"I think the mental part, you have to stay very tough. I don't know because I haven't done it," she told a news conference on Friday.

"Her stories, it's super cold where you can barely rest and you have to continue walking, where you had to overcome, I don't know, your fears and also be strong to continue.

"I think that gives you something mentally, that's for sure. I think she felt great about doing that. Not maybe everybody can reach the summit.

"She was stubborn enough to get there and she did it. I think that gives you something on the court where you might see something that is impossible, but everything is possible if you have the right mentality. She has the right mentality."

Now, Muguruza is a win away from achieving another fine feat – clinching a first hard-court grand slam title.

Standing in her way is Kenin, who she lost to in three sets in Beijing last year, and Martinez said being in control would be the key for Muguruza.

"She's a very good player. She's young. She's improving. I've been seeing her when I was working with [Karolina] Pliskova. I think she played her at the US Open 2018," she said.

"Last year I think she played her three times. I was with her a couple of times. She is a great player, very good fighter. She strikes the ball good. She is aggressive.

"I mean, the key is going to be to stay with her, to stay aggressive, try to be the one in command. It's not going to be easy, but hopefully she can do it.

"She's definitely improving. I mean, you can see over the time where she is. Like I said, it's not a one-time shot. A lot of work behind it. She's doing good."

Garbine Muguruza can join a small group of women to have won a grand slam while unseeded since 2000 when she faces Sofia Kenin in the Australian Open final.

A two-time grand slam champion, Muguruza has put together a fine run in Melbourne, where 14th seed Kenin awaits in the final on Saturday.

A French Open and Wimbledon winner, the Spaniard can add a first hard-court slam to her collection, having previously never been beyond the quarter-finals at the Australian Open.

Ranked 32nd in the world, the former world number one is aiming to win the grand slam while unseeded.

We look at the unseeded women to have won a grand slam since 2000 ahead of the Australian Open final.

2007 Australian Open – Serena Williams

Having missed most of 2006 due to a knee injury, Williams entered the 2007 tournament in Melbourne as the world number 81. The American cruised through the opening two rounds before overcoming fifth seed Nadia Petrova. In between wins over seeds Jelena Jankovic and Nicole Vaidisova, Williams survived her biggest scare, coming from a break down in the final set to edge Shahar Peer 8-6 in the third. In the final, Williams dispatched Maria Sharapova to win an eighth grand slam title.

2009 US Open – Kim Clijsters

After retiring, Clijsters gave birth to her daughter in early 2008 and needed a wildcard to enter the 2009 US Open, her first grand slam since Melbourne in 2007. The Belgian's biggest early tests came against Marion Bartoli and Venus Williams, surviving in three sets, before a quarter-final win over Li Na. Clijsters beat Serena Williams in an extraordinary semi-final during which the American threatened a linesperson over a foot-fault call, before overcoming Caroline Wozniacki in the final for her second major title.

2017 French Open – Jelena Ostapenko

Ostapenko was in fine form on clay heading into Roland Garros, where the Latvian stunned the tennis world. Untroubled early in the tournament, Ostapenko then played four consecutive three-setters on her way to the title, beating Sam Stosur, Wozniacki, Timea Bacsinszky and Simona Halep. Having turned 20 just days earlier, Ostapenko came from a set and 3-0 down in the second in the final against pre-tournament favourite Halep. She became the first Latvian to win a grand slam singles title, the crown also her first on the WTA Tour.

2017 US Open – Sloane Stephens

The highly rated Stephens, then ranked 83rd in the world, powered her way to the title in New York in 2017. The American had reached a semi-final (Australian Open) and quarter-final (Wimbledon) in 2013 before failing to go beyond the fourth round of a major leading into the US Open in 2017. A foot injury had sidelined her for almost a year after the 2016 Olympics, but Stephens stepped up on her return. She battled past the likes of Dominika Cibulkova, Julia Goerges, Anastasija Sevastova and Venus Williams before hammering Madison Keys in the final for her maiden major title.

Novak Djokovic is satisfied with his form heading into a record eighth Australian Open men's singles final after brushing past Roger Federer.

The Serbian 16-time grand slam champion recovered from a slow start to beat Federer 7-6 (7-1) 6-4 6-3 in their semi-final on Thursday.

Djokovic dropped a set in the opening round but has cruised through since, including beating a hurting Federer in their 50th meeting.

The seven-time champion in Melbourne has already won 12 singles matches this year and is happy with where his game is at ahead of facing either Dominic Thiem or Alexander Zverev in the final on Sunday.

"Yes, I'm pleased with the way I've been feeling and playing," Djokovic told a news conference.

"I thought the ATP Cup went really well for me, I got a lot of hours spent on the court, singles and doubles. It was a great lead-up for the Australian Open.

"Obviously I got a lot of positive energy from that competition. I've dropped only one set so far up to the finals. I have two days of no match right now, which actually is really good. It gives me more time to recuperate and gather all the necessary energy for the finals."

While he savoured Serbia's ATP Cup triumph and has dominated in Melbourne, Djokovic will face a first-time Australian Open finalist in either Thiem or Zverev.

By reaching the final for an eighth time, Djokovic now holds the outright record for the most visits to the title match in the Open era, having previously been tied with Federer on seven appearances.

He holds positive head-to-head records against both Thiem (6-4) and Zverev (3-2), but is wary of the duo.

"Well, Dominic won our last match when we played against each other, a close one in London [at the ATP Finals in November]. He played a terrific match against Rafa [Nadal] last night. I watched that," Djokovic said.

"[He is] definitely one of the best players in the world. Deserves to be where he is. It seems like he's improved his game a lot on hard-courts, because his game is more suitable to the slower surfaces, the clay of course being his favourite surface.

"But winning Indian Wells I think last year, beating Roger in the finals, that probably gave him a lot of confidence that he can win big tournaments on other surfaces, as well.

"Alex didn't start the year very well. I watched his matches. I practised with him in Brisbane during ATP Cup. He wasn't feeling his best on the court, not much confidence.

"It's impressive with the way he has been playing so far in this tournament, building his game, raising the level of tennis that he's been playing. It's his first semi-final at a grand slam in his career, so I'm sure that he is motivated, he's pumped to get at least a step further. It's going to be really a good match to watch."

Roger Federer felt he had just a "three per cent chance" of winning going into his Australian Open semi-final against Novak Djokovic after battling injury.

The Swiss great made a strong start before falling to a 7-6 (7-1) 6-4 6-3 loss to Djokovic, who reached a record eighth final in Melbourne on Thursday.

Federer battled a groin injury during an incredible quarter-final win over Tennys Sandgren and took a medical timeout after the first set of his loss to Djokovic.

The 20-time grand slam champion admitted he felt his chances of victory over Djokovic, who has won 27 of their 50 meetings, were slim.

"Look, overall, at the end of the day I guess I'm very happy. I've got to be happy with what I achieved," Federer told a news conference.

"It was the maximum to go to get at this tournament, especially after the [John] Millman and the Sandgren match.

"Today was horrible, to go through what I did. Nice entrance, nice send off, and in between is one to forget because you know you have a three per cent chance to win. You know, got to go for it. You never know.

"But once you can see it coming, that it's not going to work anymore, it's tough. No, look, at the end of the day I'm very happy.

"I think I overall played all right. I know I can play better. At the same time, I also know I can play much worse. With no tournaments beforehand, I think it's a very, very good result."

Federer was optimistic over the injury, saying he wanted to play in a scheduled exhibition match against Rafael Nadal in South Africa on February 7.

A six-time champion in Melbourne, Federer, 38, was unsurprisingly unwilling to guarantee he would be back at the Australian Open, but he was hopeful.

"No idea. Same as last year. You never know what the future holds," he said.

"But especially my age, you don't know. I'm confident. I'm happy how I'm feeling, to be honest. I got through a good, nice training block. No plans to retire.

"From that standpoint, we'll see how the year goes, how everything is with the family. We'll go from there. Of course, I hope to be back."

Novak Djokovic paid tribute to Roger Federer for playing while "obviously hurt" in their Australian Open semi-final on Thursday.

Djokovic reached an outright record eighth Australian Open men's singles final with a 7-6 (7-1) 6-4 6-3 victory over Federer in their 50th meeting.

The Serbian star recovered from 1-4 0-40 down in the first set on his way to improving his head-to-head record over Federer to 27-23.

Federer took a medical timeout at the end of the first set, having dealt with a groin injury during his incredible quarter-final win over Tennys Sandgren on Tuesday.

And Djokovic praised his rival for playing through the pain, saying in an on-court interview: "Full respect to Roger for coming out tonight, he was obviously hurt.

"He obviously was hurt and wasn't at his best, even close to his best in terms of movement, respect for coming out and trying his best all the way through."

Djokovic, who started slowly before finding his rhythm, said Federer's injury woes impacted the way he opened the encounter.

"It was probably not exactly the right mindset from my side at the beginning of the match," the 16-time grand slam champion said.

"I was kind of looking more on how he's moving and what he's doing rather than executing my shots in the right way and it resulted with a 1-4 down and 0-40 lead for him.

"I managed to kind of dig my way through, back in the first set and it was very important to win that first set obviously mentally relaxed a little bit after that and could swing through the ball a bit more."

Djokovic will face either Dominic Thiem or Alexander Zverev in his 26th major final.

Novak Djokovic moved into an outright record eighth Australian Open men's singles final with another win over long-time rival Roger Federer on Thursday.

Djokovic recovered from a first-set deficit before recording a 7-6 (7-1) 6-4 6-3 semi-final victory over Federer in hot conditions on Rod Laver Arena in a match lasting two hours and 18 minutes.

A record seven-time champion in Melbourne, the Serbian star proved too good for Federer, 38, in the 50th meeting between the all-time greats, with 27 having now been won by Djokovic.

But it only came after Federer coughed up a 4-1 lead in a first set he should have won, the 20-time grand slam winner – who took a medical timeout after the opener – letting a huge chance slip.

Djokovic, who started slowly, would punish him to move within a win of a 17th major title and eighth in Melbourne, where he has never lost a semi or final, with Dominic Thiem or Alexander Zverev awaiting.

After saving two break points in the opening game, Federer – who looked sprightly after his groin worry in the incredible quarter-final against Tennys Sandgren – broke for a 2-0 lead with a wonderful backhand pass down the line.

An uncharacteristically sloppy Djokovic would break in the next game before giving up serve once more, sending a backhand wide on break point.

Djokovic dug out of a 0-40 hole when trailing 4-1 and from 0-30 down in the eighth game, those holds proving crucial when he broke to love after a poor ninth game from Federer, who produced four bad errors.

Suddenly, a set Federer looked in complete control of slipped out of his grasp, the 63-minute opener settled after the improving Djokovic played a superb tie-break.

After an off-court medical timeout at the end of the first set, Federer had the greater difficulties on serve throughout the second before Djokovic landed the break at the perfect time.

As "Nole! Nole! Nole!' chants rang out among a crowd largely backing Federer, Djokovic broke serve and took the second set with a cross-court winner following a drop shot from his opponent.


Federer tried to hang in there to begin the third but, in truth, he was causing Djokovic few problems.

Djokovic closed in on victory with a forehand winner for a break and 4-2 lead, a tough hold in the following game helping him past Federer for the fifth time in their past six meetings.

 

STATISTICAL BREAKDOWN  
Djokovic [2] bt Federer [3] 7-6 (7-1) 6-4 6-3

WINNERS/UNFORCED ERRORS   
Djokovic – 31/18
Federer – 46/35

ACES/DOUBLE FAULTS   
Djokovic – 11/1
Federer – 15/3

BREAK POINTS WON   
Djokovic – 4/11
Federer – 2/7

FIRST SERVE PERCENTAGE   
Djokovic – 73
Federer – 65

PERCENTAGE OF POINTS WON ON FIRST/SECOND SERVE   
Djokovic – 73/54
Federer – 66/42

TOTAL POINTS   
Djokovic – 113
Federer – 93

Simona Halep said the heat "killed" her as she surrendered to the sizzling game of Garbine Muguruza in their Australian Open semi-final.

With temperatures reaching the mid-30s at Melbourne Park, conditions were distinctly uncomfortable for both players on Rod Laver Arena.

The unseeded Muguruza prevailed in a gruelling battle, her 7-6 (10-8) 7-5 success setting up a final showdown against Sofia Kenin on Saturday.

Halep was in charge of each set until being reeled in both times by Muguruza, whose performances had dipped since winning Wimbledon and the French Open earlier in her career.

That grand slam title-winning form was back as Halep, who has also triumphed at the grass-court and clay-court slams, was edged out of the tournament.

"It was very, very hot today and I felt it," Halep said. "It killed me after the first set, in the end of the first set. The sun was strong. I didn't like that much to play in this weather."

Conditions were fractionally below the point on the tournament's heat stress scale at which the roof would have been automatically closed on the stadium court.

"I would love to see the roof closed. But rules are rules. We have to accept it," Halep said.

"The level of energy went down a little bit, and I felt it in the legs. I was not used to it in the last two weeks, we didn't have that much heat. And today I felt the sun a little bit too much. It was not 100 per cent right for me, but it is how it is."

With Australian favourite Ash Barty ousted in the first semi-final, it will be a surprising line-up in the title match.

Romanian Halep said defeat left her "in pain", given the control she held at different stages in the match.

"But life goes on," she said. "I think maybe I could be a little bit more brave in the points that were important. I didn't do that."

Muguruza looked like a player who might dominate the women's tour when she took the 2017 Wimbledon title in some style.

She reached number one in the WTA rankings later that year, but has dropped outside the top 30 since.

"If she can play every day like this, she can be number one, for sure," Halep said. "But it's tough to do that."

Halep knows, having spent 64 weeks at the summit.

"Consistency on tour, it's the most important thing and the toughest one," Halep added. "She's a great champion. She knows how to win grand slams, how to win titles."

Sofia Kenin stunned world number one Ash Barty to reach her first grand slam final at the Australian Open but it came as no surprise to the American, who always believed. 

Kenin spoiled the 'Barty Party' on Thursday, the 14th seed upstaging the Australian star 7-6 (8-6) 7-5 in sweltering heat in Melbourne, where the temperature soared towards 40 degrees Celsius.

The 21-year-old Kenin, who will meet two-time major winner Garbine Muguruza in Saturday's decider, became the first American other than a Williams sister to progress to the Australian Open final since Lindsay Davenport in 2005.

Kenin also became the youngest player to defeat a world number one at the tournament since 2008, when Maria Sharapova knocked out Justine Henin in the quarter-finals. 

"I always believed I can. Of course, I didn't have a book. I didn't know exactly when. I feel like at this young age, I think it's incredible," Kenin, who saved two set points in both the first and second sets, told reporters.

"Not everyone gets to live this moment, live this dream. I'm just really grateful for it. I've worked so hard. I've put all the efforts into my practices, into my fitness. All the efforts I've been doing, it's got me here. It's just paying off and it's like a dream come true for me."

Kenin added: "I'm not shocked. It's a dream come true for me. I've always dreamed about this. Of course, I believed in myself. 

"I was playing, I knew I was in the semi-final. It was just great. I'm so happy I was able to share the court with Ash.

"After the match, of course it's pretty emotional. It's the finals. It's something different. It's surreal. [I'm] so grateful for it."

Garbine Muguruza advanced to her first Australian Open final after the former world number one outlasted 2018 runner-up Simona Halep in Melbourne on Thursday.

After struggling following her 2017 Wimbledon triumph, Spanish star Muguruza has looked like a player reborn since reuniting with former coach Conchita Martinez. 

Muguruza - who split from Martinez two years ago - continued her fine form after upstaging fourth seed Halep 7-6 (10-8) 7-5 in oppressive heat at Melbourne Park.

Unseeded for the first time at a slam since the 2014 French Open, two-time major champion Muguruza will meet 14th seed Sofia Kenin in Saturday's final.

With the Rod Laver Arena roof open, despite the scorching conditions as the heat stress scale sat just below the required five to trigger a suspension of play and roof closure, Muguruza and Halep slogged it out from the baseline.

Muguruza clinched the first break in the seventh game and had the chance to serve out the set at 5-4, but Halep reeled off three straight games to force a tie-break.

The tie-break was a rollercoaster as Muguruza went from leading 3-0 to trailing 4-3, while the pair both had set points before the former won a 20-shot rally to eventually close it out.

It was the first time Halep, who was hospitalised due to dehydration following a gruelling showdown against Caroline Wozniacki in the 2018 Australian Open final as tournament organisers were criticised for not closing the roof in hot weather, had dropped a set at this year's event.

Clearly frustrated after losing the set, Halep regrouped and broke Muguruza to take a 2-1 lead, only to hand it straight back as the pair exchanged three consecutive breaks.

Halep had the chance to level the match at 5-4, but just like Muguruza in the first set, failed to do so as the latter broke at the fourth time of asking.

It opened the door for Muguruza, who won four successive games as Halep fell at the semi-final stage of a major for the first time since the 2015 US Open.

 

STATISTICAL BREAKDOWN 
Muguruza bt Halep [4] 7-6 (10-8) 7-5

WINNERS/UNFORCED ERRORS   
Muguruza – 39/44
Halep – 20/23

ACES/DOUBLE FAULTS   
Muguruza – 10/2
Halep – 2/1

BREAK POINTS WON  
Muguruza – 4/14
Halep – 3/13

FIRST SERVE PERCENTAGE  
Muguruza – 59
Halep – 72

PERCENTAGE OF POINTS WON ON FIRST/SECOND SERVE  
Muguruza – 71/42
Halep – 62/44

TOTAL POINTS  
Muguruza – 90
Halep – 87

It was all about perspective for world number one Ash Barty, who spoke to the media holding her baby niece after sensationally losing in the Australian Open semi-finals. 

Barty had a great opportunity to become the first Australian woman since 1980 to reach the final in Melbourne, however, the top seed was upstaged 7-6 (8-6) 7-5 by Sofia Kenin on Thursday.

All eyes were on Barty throughout the tournament at Melbourne Park, having arrived as the WTA's top-ranked player, WTA Finals winner and French Open champion.

Barty was unable to go all the way amid the hype, but the Australian star was in good spirits afterwards.

"Perspective is a beautiful thing," said Barty, who arrived for her news conference with special guest Olivia. "Life is a beautiful thing. She brought a smile to my face as soon as I came off the court. I got to give her a hug. It's all good. It's all good."

Barty and 14th seed Kenin were forced to endure scorching conditions, with the temperature just short of 40 degrees Celsius.

The Rod Laver Arena roof remained opened throughout as the heat stress scale hovered towards five, which would have meant a suspension in play and roof closure.

Barty, though, refused to use the weather as an excuse after wasting two set points in each of the first and second sets.

"I've grown up in Queensland. I've played in summers, played in the sun a long time. I know Sofia has also grown up in Florida," Barty said. "Everyone is playing in the same conditions. It didn't help or hinder me. It kind of is what it is."

Barty added: "I think [it was] a match where I didn't feel super comfortable. I felt like my first plan wasn't working. I couldn't execute the way that I wanted. I tried to go to B and C. I think I had to dig and find a way. 

"I mean, I'm two points away from winning that in straight sets, which is disappointing. Knowing I had to fight and scrap, I still gave myself a chance to win the match."

She continued: "It's disappointing. But it's been a hell of a summer. I mean, if you would have told me three weeks ago that we would have won a tournament in Adelaide, made the semi-finals of the Australian Open, I'd take that absolutely every single day of the week."

Sofia Kenin advanced to her first grand slam final after stunning world number one Ash Barty 7-6 (8-6) 7-5 in scorching heat at the Australian Open. 

Barty was looking to become the first Australian woman to reach the decider in Melbourne since Wendy Turnbull in 1980, however, the top seed wasted chances as she lost with the temperature approaching 40 degrees celsius on Thursday.

Kenin, who saved a pair of set points in each of the first and second sets, spoiled the party to become the first American other than a Williams sister to progress to the Australian Open final since Lindsay Davenport in 2005.

The 21-year-old - set to face either 2018 runner-up Simona Halep or Garbine Muguruza - also became the youngest player to defeat a world number one at the tournament since 2008, when Maria Sharapova upstaged Justine Henin in the quarter-final. 

It was all power and prowess to start the semi-final, with not much separating the pair in scorching conditions in Melbourne, where the Rod Laver Arena roof remained opened throughout.

Barty - who had won the opening set in all five of her previous encounters with the American - threatened to break serve in the sixth game, but Kenin saved all three opportunities.

There was a stunning sequence of play in the following game, when Barty was left scrambling as she chased down a drop shot and then sprinted back to get to a lob before defending desperately - Kenin eventually forehanding into the net and dropping her racquet in shock.

Barty, who hit 22 winners to Kenin's 12 in the first set, was then left to rue a missed opportunity after opting not to challenge a call at 30-30 in the 12th game. Replays showed the ball was out as Kenin forced a tie-break.

And it was a bad decision after Kenin saved a pair of set points in the tie-break before stunning French Open winner Barty following 59 minutes of energy-sapping tennis.

However, Barty bounced straight back in the second set, claiming the first break of the match in the third game for a 2-1 lead - Kenin spraying a forehand long.

Barty looked to be cruising towards a third and deciding set, bringing up two set points, but Kenin fended off both and then sensationally broke to level at 5-5 before going on to silence the Australian crowd.

 

STATISTICAL BREAKDOWN 
Sofia Kenin [14] bt Ash Barty [1] 7-6 (8-6) 7-5

WINNERS/UNFORCED ERRORS   
Kenin – 16/25
Barty –  33/36

ACES/DOUBLE FAULTS   
Kenin – 2/1
Barty – 8/1

BREAK POINTS WON  
Kenin – 2/4
Barty – 1/4

FIRST SERVE PERCENTAGE  
Kenin – 70
Barty – 50

PERCENTAGE OF POINTS WON ON FIRST/SECOND SERVE  
Kenin – 69/63
Barty – 80/50

TOTAL POINTS  
Kenin – 81
Barty – 78

Dominic Thiem says he or Alexander Zverev must win the Australian Open to "break a barrier" at Melbourne Park after he dumped Rafael Nadal out at the quarter-final stage.

Thiem had lost all five grand slam encounters with Nadal before coming out on top in a thriller on Wednesday, winning 7-6 (7-3) 7-6 (7-4) 4-6 7-6 (8-6) at Rod Laver Arena.

The Austrian, twice a runner-up to Nadal at the French Open, and Zverev will do battle on Friday for the right to face Novak Djokovic or Roger Federer in the final.

Zverev said he felt he had overcome one major obstacle by reaching his maiden major semi-final this week, but Thiem says the younger players still have a long way to go before there can be any talk of a changing of the guard.

"I don't feel really like that I broke a barrier. It was just an unbelievable match, like an epic one, four hours 10 [minutes]," the 26-year-old said of his titanic tussle with 19-time major winner Nadal.

"That's what I'm most happy about. Also, of course, that I'm for the first time in the semis of the Australian Open. That's for me a barrier. But to really break a barrier, one young player has to win a slam.

"Yes, one of us going to be in the finals. But it's still a very long way to go. I mean, the other semi-final is still two of the big three.

"I think we are a pretty long way from overtaking or from breaking this kind of barrier."

Thiem is relishing the opportunity to face Zverev, 22, with so much on the line and is expecting a tight contest against the seventh seed, who has won just two of their eight ATP Tour matches.

The fifth seed added: "We know each other. For me, it's funny because it's first time in a grand slam semi-final I face a younger guy. We're good friends, I'm happy for him, as well, that he's playing so good here.

"He made his breakthrough at a grand slam. We have no secrets from each other. We played so many times, also on very special occasions already, at the ATP Finals, semis, French Open quarters.

"It's a nice rivalry we have. It's great that we add an Australian Open semi-finals to this one and it's going to be a close match again.

"If two top-10 players play each other in the semis of a slam, the deciding moments are very small, small margins. I'm looking forward to it. I try to regenerate as good as possible and then try to be 100 per cent ready for Friday."

Rafael Nadal was sad to suffer defeat to Dominic Thiem at the Australian Open, but insisted he was satisfied with his performance, as well as his attitude, in the quarter-final clash.

Thiem beat Nadal for the first time in six attempts at a grand slam with a tense 7-6 (7-3) 7-6 (7-4) 4-6 7-6 (8-6) win in four hours and 10 minutes on Rod Laver Arena.

The Austrian progresses to meet Alexander Zverev in the semi-final on Friday, while the world number one is left to reflect on a missed opportunity to draw level with Roger Federer on 20 major titles.

But Nadal had few complaints after the loss, praising Thiem as a worthy winner.

"He's playing great," the 33-year-old said of Thiem. "He's playing with a lot of energy, aggression, determination. So just well done to him.

"I honestly didn't play a bad match, no, no. My attitude was great during the whole match. 

"Of course, I am sad. I lost an opportunity to be in the semi-finals of another grand slam. But I lost against a great opponent and he deserved it too.

"[I was] good, positive, fighting spirit all the time, giving myself more chances. That's what I tried. I did not give up in one moment during the whole match and gave myself an opportunity until the last point.

"Happy for that because my level of concentration and tennis was better. I think the concentration was even better than the tennis, but the tennis was not bad at all."

Nadal, who had 49 winners to 33 unforced errors and converted four of his nine break points, found the conditions difficult at times.

The Spaniard added: "It was difficult to play against him. [I'm] happy, but I need a little bit more determination in some moments - it's true that in some moments conditions have been a little bit heavy.

"Honestly, when the ball was new for me, I was better. I had two breaks and I felt more comfortable with the new balls.

"Then the ball became so heavy. He's younger, he's very quick. With these heavy balls, it's difficult to produce winners sometimes. He has a lot of power, so he's able to produce these amazing shots from a very difficult position."

Nadal, who only lost five fewer points than Thiem across the match, was asked if he felt there was any more he could have done to find a way to win.

"Yes - win any tie-break!" he said. "But that's how it works. Sometimes things are not going the way that you would like. It has been a very good match with a good level of tennis.

"I had a big chance with 5-3 in the first. I had set point serving. That was a very important moment of the match, for sure. Then I didn't play a good tie-break. I was back in the second set, but he played with the right determination.

"He played great matches against me in the past too, great quality tennis. We like each other in terms of character - I like his attitude and probably he likes mine too! 

"We have things that we can compare with each other in some ways and I wish him all the very best for the rest of the tournament."

Roger Federer and Novak Djokovic will meet for a 50th time in what is a storied rivalry that has repeatedly produced classic matches.

Djokovic leads their head-to-head 26-23 and that stands at 10-6 when the all-time greats have met at grand slams.

It is also 3-1 at the Australian Open and the Serbian, whose 16 grand slam titles are four shy of Federer's 20, will head into Thursday's semi-final in Melbourne as favourite.

Ahead of their meeting, we look at five of the classics they have delivered.

2010 US Open semi-final: Djokovic [3] bt Federer [2] 5-7 6-1 5-7 6-2 7-5

Flushing Meadows was Federer's playground for five straight years until 2009, when he was stunned by Juan Martin del Potro in the final. To this point, he had dominated Djokovic, too. But the Serbian managed to save two match points in a thrilling five-setter to win in almost four hours in a victory that would – even with Federer only 29 years of age – bring suggestions the Swiss maestro was on the decline.

2011 French Open semi-final: Federer [3] bt Djokovic [2] 7-6 (7-5) 6-3 3-6 7-6 (7-5)

By the time they met at Roland Garros the following year, Djokovic was a heavy favourite after incredibly winning his first 41 matches of 2011, including a second major title at the Australian Open. But Federer would end that run, wagging his finger after his stunning four-set victory. The year would still belong to Djokovic, and not before more drama against Federer.

2011 US Open semi-final: Djokovic [1] bt Federer [3] 6-7 (7-9) 4-6 6-3 6-2 7-5

Having recovered from two sets down to force a decider, Djokovic reeled off the final four games and saved two match points to shock Federer, and the way he saved the first lives long in the memory. Djokovic crushed a forehand cross-court return winner that John McEnroe would describe as "one of the all-time great shots", one which even Federer struggled to accept. Djokovic would go on to win his third major of 2011.

2014 Wimbledon final: Djokovic [1] bt Federer [4] 6-7 (7-9) 6-4 7-6 (7-4) 5-7 6-4

Djokovic. Federer. All England Club. Wimbledon final. They are words sports fans dream of. Federer was in his first major decider since 2012, while Djokovic had lost his previous three grand slam finals – one to Andy Murray and two to Rafael Nadal. Federer would produce the comeback this time, coming from 5-2 down and saving a match point in the fourth to force a decider. But just as Federer looked the more likely winner, Djokovic stepped up to win a seventh major crown. The pair combined for 143 winners and just 56 unforced errors in a match Djokovic labelled the "best quality grand slam final" he had played in.

2019 Wimbledon final: Djokovic [1] bt Federer [2] 7-6 (7-5) 1-6 7-6 (7-4) 4-6 13-12 (7-3)

Fast forward five years and they met again, and they delivered once more on the biggest stage. Federer would be left to rue missed chances after a battle lasting four hours, 57 minutes – the longest singles final in Wimbledon history. Djokovic saved two match points at 8-7 in the fifth set before a match tie-break followed, the first in singles in the tournament's history. Djokovic would go on to win a 16th grand slam title, moving a little closer to Federer's all-time men's record total of 20.

Dominic Thiem produced a magnificent display to avoid more major misery at the hands of Rafael Nadal and reach his first Australian Open semi-final at the expense of the world number one.

Nadal had won all five grand slam encounters with Thiem - including two French Open finals - but the Austrian dumped the top seed out with a stunning 7-6 (7-3) 7-6 (7-4) 4-6 7-6 (8-6) victory in four hours and 10 minutes on Rod Laver Arena.

Thiem had never reached the quarter-finals at Melbourne Park before this week, but will face Alexander Zverev in the last four after coming through a huge, tense battle on a warm Wednesday evening.

Top seed Nadal had disagreements with chair umpire Aurelie Tourte as his hopes of winning a 20th grand slam title were ended in a pulsating contest.

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