The Russian, who is seeded 30 at Melbourne Park, bundled Denmark's world number three Wozniacki out of the tournament 6-4, 4-6, 6-3 to set up a last 16 clash with local hope Ash Barty.
Sharapova dumps defending champion Wozniacki from Open
Highlights Maria Sharapova Australian Open
Latest Videos
5:12 min
Highlights: Tunisia 4-1 Togo
3:50 min
Highlights: Morocco 1-0 Burkina Faso
4:44 min
Highlights: Kyrgios vs Tsitsipas
5:03 min
Djokovic racks up 80th Wimbledon win
4:04 min