Second-seeded Karolina Pliskova continued her strong recent form at the Australian Open by advancing to the third round with a 6-3, 6-3 win over Laura Siegemund.

''I'm happy to get through - this was an ugly match for me,'' she said.

Last year at Melbourne Park, Pliskova lost to eventual champion Naomi Osaka in the semifinals after saving four match points to beat Serena Williams in the quarterfinals.