Erin Routliffe and Canadian Gaby Dabrowski took a 7-5 6-2 victory over Cristina Bucsa and Alexandra Panova. Photo: AFP
New Zealand's Erin Routliffe and Canadian Gaby Dabrowski have won their quarterfinal at the Australian Open.
The fourth seeds and US Open champions are through to the semifinals of the women's doubles after a 7-5 6-2 victory over Spaniard Cristina Bucsa and Russian Alexandra Panova in 1hour 20 minutes.
They will now face 11th seeds, Lyudmyla Kichenok (Ukraine) and Latvia's Jelena Ostapenko for a place in the final.
The quarterfinal win will likely take Routliffe from her current high ranking of nine to a new career-best of six.
Meanwhile, Novak Djokovic and Coco Gauff were both made to toil for semi-final places but organisers were spared a ridiculously late finish as Aryna Sabalenka and Jannik Sinner roared through the night session.
Two epic battles in the afternoon meant defending women's champion Sabalenka did not walk onto Rod Laver Arena until well after 9pm but the Belarusian made light of Czech Barbora Krejcikova, winning 6-2 6-3 to ease pressure on the schedule.
Fourth seed Sinner then beat fifth seed Andrey Rublev 6-4 7-6(5) 6-3 just before 1.30am to set up a mouth-watering clash with Djokovic and leave a shattered Rublev picking over a 10th defeat in 10 Grand Slam quarter-finals.
Holder Djokovic was expected to breeze past Taylor Fritz having come into the contest with an 8-0 win-loss record over the 12th seeded American but he endured a stern test that lasted four hours to prevail 7-6(3) 4-6 6-2 6-3.
"This match was not an enjoyable match for me at all," Djokovic told reporters. "Of course, I'm proud to overcome the kind of challenge and obstacles and I'm pleased to win but it wasn't enjoyable at all.
"It was really ... You have days like that where you just have to accept it, face the circumstances and try to make the most out of it."
Fritz, who at 26 is a decade younger than his opponent, made the Serb sweat in a tight first set that the American dropped in a tiebreak before drawing level in the contest on a steamy day where both players looked physically drained at times.
"I played a really high level for the first two sets and they were physically tough. It was like two and a half hours by the time we finished the two sets," said Fritz. "I need to get to the point where I can do that for five hours."
Novak Djokovic has described his latest match at the Australian Open as "a lot of suffering in every aspect". Photo: AFP
Tough moments
Djokovic has had some tough moments on his way to reaching his 48th Grand Slam but is now two wins away from a record-extending 11th Melbourne Park title and 25th Grand Slam to eclipse the record he shares with Margaret Court.
Invariably he finds a solution and Gauff was forced to do the same against Ukraine's Marta Kostyuk, admitting she had to win "ugly" as she triumphed 7-6(6) 6-7(3) 6-2 in a scrappy match lasting a little over three hours.
"Yeah, it was a fight," the US Open champion Gauff, who had to battle back from 5-1 down in the opening set, said.
"I think today was definitely a 'C' game. Hopefully I got the bad match out of the way."
She will certainly have to against reigning champion Sabalenka who had far too much power for 2021 French Open champion Krejcikova in a match lasting only 71 minutes.
"I think it was a really great match today. I played really great tennis and I really hope I can just keep playing that way or even better," Sabalenka, who lost to Gauff in the US Open final, said on court.
Aryna Sabalenka Photo: PHOTOSPORT
With the day session taking so long, Sabalenka had been asked whether she wanted to switch her semi-final to Margaret Court arena rather than play it on Rod Laver.
"Yeah, they asked our opinions, if we want to be moved," Sabalenka said. "But Novak won that set 6-2 and it still was quite early, so we decided to wait for this match."
She certainly made up for any lost time and Sinner also looked determined to avoid the sort of 4am finish that might have damaged his hopes of landing his first Grand Slam.
After cruising through the opening set in 38 minutes he found himself under fire in the second as Rublev upped the power and carved out a succession of break point chances - none of which he could convert.
Rublev's big chance came as he moved 5-1 ahead in the second-set tiebreak but again Sinner dug his way out of a hole and once he had reeled off six successive points to grab a two-set lead he was never going to falter.
He now turns his focus to world number one Djokovic, who he beat twice at the back end of last year.
"It's going to be tough but the only thing I can control is that I'll fight 100 percent for every ball and see what happens," the 22-year-old said.
-Reuters/RNZ