 Amélie Mauresmo was the defending champion, but was defeated by unseeded Lucie Šafářová in the fourth round.This tournament was the final Australian Open singles appearance for three-time winner Martina Hingis, who lost in the quarterfinals against Kim Clijsters.The First day of play at Melbourne Park saw defending champion Amélie Mauresmo advance in straight sets to the second round, along with a string of Russian top-10 players (Kuznetsova, Petrova, Dementieva, among others).