Ana Ivanovic, Jelena Janković, Maria Sharapova and Svetlana Kuznetsova were in contention for the world No.

Ivanovic retained the top ranking despite losing in the third round to Zheng Jie.

Janković, Sharapova and Kuznetsova also lost in the first four rounds, marking the first time in history that none of the top four seeds advanced to the quarterfinals.

1;[citation needed] this record would be broken only two months later by Julie Coin at the 2008 US Open, who also defeated Ivanovic.

[citation needed] Tamarine Tanasugarn was the first Thai player to reach a major singles quarterfinal.