Third seed Dinara Safina had no trouble defeating seed No.25 Kaia Kanepi 6-2 6-2.
The Russian advanced to the fourth round of the 2009 Australian Open, breaking the Estonian two times in both sets, and losing none of her own service games.
Safina will next play the winner of the Daniela Hantuchova vs. Alize Cornet match.
Also advancing to the fourth round was tenth seed Nadia Petrova. Her opponent Galina Voskoboeva retired after the first set.