The quarters feature such familiar names as Williams, Wozniacki and ... Angelique Kerber? Introducing two of the lesser-known players in the final eight.
Though she lost to Serena Williams in straight sets Monday, Ana Ivanovic is again looking like the player who reached No. 1 in the world rankings.
Maria Sharapova, the 2006 U.S. Open champ, is enjoying her highest world ranking since her return from a 2008 injury. But Serena's still the favorite.
The former No. 1 has hired a new coach and is working with a fitness trainer in hopes of moving back up the rankings.
Dropping out of the rankings due to injuries in 2010, Sabine Lisicki has climbed back to No. 26 on the strength of a monster serve.
Despite her No. 172 ranking, a poll says she's again the most popular female sports star in the U.S. Sister Venus is second.