Novak Djokovic was seriously rattled early on by inspired American teenager Nishesh Basavareddy but rallied for a 4-6, 6-3, 6-4, 6-2 victory on Monday.
Olivia Gadecki and John Peers battled back from a set down to defeat compatriots Kimberly Birrell and John-Patrick Smith
The volatile 17th seed had a quiet evening by his standards in his opening match on Monday, with just the one violation for unsportsmanlike behaviour when he asked spectator, in no uncertain terms, to be quiet while he was serving.
'I guess it'll force me to read books more, be more of a productive human probably.'
The Belarusian became the first woman since her compatriot Victoria Azarenka in 2013 to retain the title
Osaka will play Jennifer Brady for the title.
All the action from Day 4 at the Australian Open on Wednesday
Players in the men's draw at the Australian Open will be allowed 10-minute breaks during matches as part of an updated extreme heat policy at the year's first Grand Slam.
IMAGES from the Australian Open matches played on Wednesday.
Sania Mirza and Rohan Bopanna went down to the Brazilian duo of Rafael Matos and Luisa Stefani in the mixed doubles final at the Australian Open on Friday.
Top seed Sabalenka proved to be at another level, though, racking up 32 winners for the match to leave Badosa chasing shadows under the lights at Rod Laver Arena.
Defending champion Aryna Sabalenka and Madison Keys made rocky starts on Thursday but eventually secured contrasting victories to set up a heavy metal Australian Open final showdown
Madison Keys blasted her way into the Australian Open semi-finals for a third time as the American continues her bid for a first Grand Slam title.
A trio of tennis moms-Naomi Osaka, Angelique Kerber and Caroline Wozniacki-are poised for comebacks at the Australian Open.
IMAGES from the action from the Australian Open at Melbourne Park on Thursday.
The Australian Open men's singles final offers a rematch of the dramatic 2021 French Open final, in which Djokovic came back from two sets down to snatch the title and leave Greek Tsitsipas heartbroken.
The duo lost their second round men's doubles match to Marcelo Arevalo of El Salvador and Mate Pavic of Croatia at the Australian Open.
Top seeds Katerina Siniakova and Taylor Townsend claimed the women's doubles crown at the Australian Open
Elise Mertens and Aryna Sabalenka beat Czech pair Barbora Krejcikova and Katerina Siniakova 6-2, 6-3 to win the Australian Open women's doubles title on Friday for their second Grand Slam trophy together.
Djokovic backs schedule change at expanded Australian Open
Jannik Sinner overcame a debilitating medical episode as well as Dane Holger Rune to reach the quarter-finals of the Australian Open for the third time.
The 33-year-old, a record eight-time winner on the Melbourne Park Arena, slipped during the third set of Friday's third-round match against Taylor Fritz and disappeared off Rod Laver Arena for treatment.
Svitolina wants to give Ukraine a 'little light' after reaching quarter-finals
Blinkova sealed the victory on her 10th match point, prompting a memorable celebration and a standing ovation from the Rod Laver Arena crowd.
Sabalenka has always had the power and, since addressing the frequent on-court meltdowns that once blighted her career, has shown a frightening level of consistency at Grand Slams.
Victoria Azarenka refuses to accept that Maria Sharapova's greater experience could be the defining factor when they meet in the Australian Open women's final on Saturday.
Images from Day 2 of the 2023 Australian Open at Melbourne Park on Tuesday.
At 27, the second seed is still seeking his first Grand Slam title and hopes to become the first German man to win the Australian Open since Boris Becker in 1996.
Novak Djokovic took a tumble in the first set but returned to his feet quickly to complete a 6-0, 6-4, 6-4 trouncing of Argentine Leonardo Mayer and march into the third round of the Australian Open on Wednesday.
Newly crowned Australian Open champion NOvak Djokovic was not short of energy as he overpowered Andy Murray to claim his sixth Australian Open title.
This milestone underscores his longevity and commitment to the sport, especially considering the physical and mental demands of playing at the top level.
Australian Open organisers said "tennis' most famous frenemies" will play each other at Rod Laver Arena on Friday.
Carlos Alcaraz powered into the Australian Open quarter-finals for the first time on Monday
The tennis greats announced on Wednesday that they had committed to lead the teams for the first three years of the new competition, patterned after golf's Ryder Cup
Coco Gauff was given a solid workout by former champion Sofia Kenin but continued her lengthy winning streak
A resurgent Svetlana Kuznetsova stunned former World No. 1 Caroline Wozniacki in an absorbing encounter on Rod Laver Arena to reach the quarter-finals of the Australian Open with a 6-2, 2-6, 7-5 victory on Monday.
Indian tennis ace Sania Mirza and her Romanian partner Horia Tecau's dream run came to an end in the mixed doubles event of the Australian Open on Sunday.
Novak Djokovic showed a few signs of rustiness after the off-season but still comfortably reached the second round of the Australian Open with a 6-3, 7-6 (7-2), 6-1 victory over Lukas Lacko on Monday.
Fifth seeds Barbora Krejcikova and Nikola Mektic completed a remarkable comeback win over American Bethanie Mattek-Sands and Briton Jamie Murray to clinch the mixed doubles title at the Australian Open.
Li Na wore down Agnieszka Radwanska with a barrage of power-hitting to beat the fourth seed 7-5, 6-3 and advance to her third semi-final at the Australian Open on Tuesday.