MELBOURNE, Australia — Olympic silver medalist Dinara Safina reached the fourth round for the first time in seven trips to the Australian Open, beating Estonia's Kaia Kanepi 6-2, 6-2 earlier today.

The 22-year-old Russian took 4-1 leads in each set and ousted the 25th-seeded Kanepi in 66 minutes.

Fellow Russians Vera Zvonareva and Nadia Petrova also are in the fourth round.

In the biggest upset so far at the season's first major, sixth-seeded Venus Williams lost 2-6, 6-3, 7-5 on Thursday night in the second round to Carla Suarez Navarro, a 20-year-old Spaniard ranked No. 46.

Williams was broken while serving for the match and dropped the last five games.

— AP