Victoria Azarenka has made it through to the fourth round of the Australian Open with a straight-sets victory over Germany's Mona Barthel.
The Belarusian took the first set with relative ease as she claimed it 6-2.
Barthel put up slightly more resistance in the second, but the world number three found the vital break to take the set 6-4.
Azarenka will face world number 45 Iveta Benesova in the next round.
