MELBOURNE, Australia — Defending champion Novak Djokovic moved into an Australian Open final against Rafael Nadal after edging Andy Murray in a five-set, almost five-hour semifinal late Friday night.
Despite appearing tired and sore after the second set, Djokovic rallied to beat Murray 6-3, 3-6, 6-7 (4), 6-1, 7-5 in a rematch of the 2011 final at Melbourne Park to reach his third consecutive Grand Slam final.
After wasting a chance to serve out the match at 5-3 in the fifth and letting Murray back into the contest, Djokovic cashed in his first match point when the Scottish player missed a forehand after four hours, 50 minutes.
Djokovic dropped onto his back, fully laid out on the court. He got up and shook hands with Murray, before jogging back out onto the court like a boxer, dropping to his knees and crossing himself.
It was already after 12:30 a.m. Saturday when he got up again and pumped his arms triumphantly.
‘‘Andy deserves the credit to come back from 2-5 down. He was fighting. I was fighting,’’ Djokovic said. ‘‘Not many words that can describe the feeling of the match.
‘‘It was a physical match ... it was one of the best matches I played. Emotionally and mentally it was equally hard.’’
It was a bitter setback for Murray, who lost the previous two Australian finals.
Murray believes he’s already improved in the few weeks since hiring eight-time major winner Ivan Lendl as coach.
‘‘Yeah, it was tough at the end ‘cause, you know, obviously you come back, then you get close to breaking,’’ he said. ‘‘But a different player, a different attitude to this time last year. I’m proud of the way I fought.’’
Djokovic finished last year at No. 1 after winning three of the four majors, including a straight-sets win over Murray in the Australian final. His only loss at a Grand Slam in 2011 was against Roger Federer in the French Open semifinals.
It was phenomenal season after previously only winning one major — the 2008 Australian Open — and not returning to a final for 11 Grand Slams.
‘‘To be honest, I think I matured as a player. I started to believe on the court I could win majors,’’ he said. ‘‘Rafa and Roger are the most dominant players for the last seven, eight years. ... It was very hard to take away the titles from them. They will not give you the titles. You have to earn it.’’
Djokovic is aiming to be only the fifth man since the Open Era started in 1968 to win three straight majors — only Rod Laver, Pete Sampras, Federer and Nadal have achieved it before him, with only Laver going on to complete the Grand Slam.
The Australian great was in the arena named in his honor for the semifinal. He watched Nadal rallied from a set and a break down to beat four-time champion Federer in four sets the previous night.
Djokovic’s 70-6 win-loss record in 2011 included six wins over Nadal — all in finals.
Both players had their form dips, but Djokovic’s were more obvious. He led by a set and a break before Murray started coming back at him. Then Djokovic started walking gingerly and appeared to be struggling for breath — just as he had been in his straights sets quarterfinal win over No. 5-ranked David Ferrer.
At one point, he pointed to his nose and seemed to indicated to his support group that he was having trouble breathing.
In the opening game of the third set, Djokovic had to fend off five break points before holding a game that lasted 14 minutes, then asked the chair umpire for a handful of tissues to blow his nose.
He stayed in the points, despite Murray scrambling and trying to get him involved in long rallies. Relentlessly pushing the limits hurt Murray in the end, as he finished with 86 unforced errors against 47 winners. Djokovic had 69 unforced errors and 49 winners.
After winning a tight third-set tiebreaker but then virtually conceding the fourth set, Murray rallied again after falling behind 5-2 in the fifth. He broke Djokovic at love when the Serb was serving for the match and rallied to tie it 5-5, putting all the pressure back on the defending champion.
But Djokovic composed himself and seemed to gather energy as the match wore on. He held serve and then broke Murray to finish it off.
‘‘I’m extremely delighted to be in the final,’’ Djokovic said. ‘‘What can be a bigger challenge than playing against Rafa Nadal, one of the greatest players ever.
‘‘I’m going to try to recover. Obviously, it’s going to be physical as well. So I need to do some push-ups tonight.’’
Despite being friends and childhood rivals, this was only the second meeting between Djokovic and Murray at a Grand Slam. Djokovic beat Murray in the 2011 Australian final and had a 6-4 lead in their overall head-to-heads at tour level.
Murray won the Brisbane International and came into the semifinal on a 10-match winning streak with Lendl in his box.
The blue-and-white crossed Scottish flags fluttered in the crowd, held by fans with the flag painted on their faces and some wearing their tartan Tam hats. The support was evenly split at Rod Laver Arena, encouraging both players in the tense final set.
The Maria Sharapova vs. Victoria Azarenka women’s final on Saturday night is previewed by local media as a battle of the two loudest grunters on the tour. Azarenka, who won the Sydney International title the weekend before the season’s first major, has been mocked by the crowd for her hooting sounds. She’ll be playing her first Grand Slam final.
Sharapova has won three majors, but none since the 2008 Australian Open. She also displays a loud, piercing sound when hitting the ball.
The winner will move to the top of the rankings. Caroline Wozniacki, who came into the tournament as No. 1, will drop three places after her quarterfinal loss to 2011 champion Kim Clijsters.
Russians Svetlana Kuznetsova and Vera Zvonareva won the women’s doubles final on Friday with a 5-7, 6-4, 6-3 victory over the Italian duo of Sara Errani and Roberta Vinci.
In the men’s doubles final Saturday, American twins Bob and Mike Bryan are aiming for a Grand Slam record 12th major when they take on Leander Paes and Radek Stepanek.
Bethanie Mattek-Sands and her Romanian partner Horia Tecau advanced to the mixed doubles final with a 6-3, 6-3 win over Indian pair Sania Mirza and Mahesh Bhupathi. They’ll play Elena Vesnina of Russia and Leander Paes of India.