Coco Gauff moved into the fourth round at Melbourne Park with a straightforward victory over Leylah Fernandez.

Defending champion Aryna Sabalenka was pushed to the limit in setting up an Australian Open showdown with talented teenager Mirra Andreeva on Friday

In a tougher-than-expected match, Aryna Sabalenka beat Clara Tauson 7-6 (5), 6-4 in a poor serving display by both players to open the sixth day of play on Rod Laver Arena.

Naomi Osaka, a two-time champion in Australia, stopped playing because of a strained abdominal muscle after dropping the first set of her match against Tokyo Olympics gold medalist Belinda Bencic.

Elsewhere, in the men's draw, American 12th seed Tommy Paul will take on Spain's Alejandro Davidovich Fokina, while German second seed Alexander Zverev faces French 14th seed Ugo Humbert. The winners of these matches will advance to the semi-finals.

While there have been plenty of surprises in the men’s bracket so far, most of the top women have progressed through the draw without an issue.

Two-time defending champion Aryna Sabalenka has moved into the Australian Open quarterfinals with a 6-1, 6-2 win over 17-year-old Mirra Andreeva