Former French Open champion Ana Ivanovic advanced to the fourth round of the Australian Open after beating Jelena Jankovic 7-5, 6-3 in a Friday clash featuring two Serbians who were both former top-ranked players. Ivanovic surged to a 5-2 lead in the first set but lost the next three games as Jankovic fought back. The 13th-ranked Ivanovic broke Janovic to pull ahead 6-5 and the won the first set with an ace.

The 25-year old Ivanovic had an easier time in the second set, wrapping it up on her second match point.

Ivanovic spent 12 weeks at No. 1 after winning the French Open in 2008.

Her next opponent is No.4 Angieszka Radwanska, who is on a 12-match winning streak.