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.

Novak Djokovic and Carlos Alcaraz picked up wins Wednesday to advance to the third round of the Australian Open.

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