Victoria Azarenka has quickly dispatched another opponent at Melbourne Park, defeating Danka Kovinic of Montenegro 6-1, 6-2 in just over an hour.
The two-time Australian Open champion hasn't given up more than three games in any of the 14 sets she has played this year, including her run to the title at the Brisbane International two weeks ago.
She beat Alison Van Uytvanck 6-0, 6-0 in the first round at Melbourne Park.
"I really don't count the games," she said after Thursday's match. "What really works for me is to stay in the moment. It keeps me focused."
Azarenka next plays Japan's Naomi Osaka, who has reached the third round of a Grand Slam for the first time with a win over the 18th seed, Elina Svitolina.