Melbourne - Third seed Dinara Safina stayed on course for a shot next week at the number one WTA ranking, gaining a Friday win for the Safin family hours before her brother Marat was to face Roger Federer.
Safina, the losing finalist at the French Open, reached the fourth round in Melbourne for the first time in her career, posting a 6-2 6-2 win over Kaia Kanepi.
Safina is one of three women chasing Jelena Jankovic in the rankings with a title next Sunday enough to assure the 22-year-old of the breakthrough top spot.