U.S. Open champion Naomi Osaka eased through to the third round of the Australian Open on Thursday with a dominant 6-2 6-4 win over unseeded Slovenian Tamara Zidansek.
The Japanese number one took a tablet from a trainer when leading 2-1 in the second set and then dropped serve to trail 4-2.
The temporary setback handed 78th-ranked Zidansek hope of making a game of it at Margaret Court Arena.
However, fourth seed Osaka ramped up her power game to break back immediately and roared through the next three games.
She then closed the match with a fierce second serve.
Osaka will play Taiwan’s Hsieh Su-Wei for a place in the fourth round.