By Shrivathsa Sridhar MELBOURNE (Reuters) -Defending champion Aryna Sabalenka overcame a wobbly display to reach the Australian Open fourth round while Novak Djokovic and Carlos Alcaraz were at their dazzling best on a warm but windy Friday at Melbourne Park.

Coco Gauff still hasn't lost a match or even at set at the Australian Open — or, actually, this season. She moved into the fourth round at Melbourne Park with a straightforward 6-4, 6-2 victory over 2021 U.

Two-time defending Australian Open champion Aryna Sabalenka beat Clara Tauson 7-6 (5), 6-4 to open the sixth day of play at the Australian Open, while Naomi Osaka retired due to injury in her match with Belinda Bencic.