Updated

Former world No. 1 Victoria Azarenka was tested in her third-round match, but ultimately prevailed Saturday at the French Open.

The third-seeded Azarenka fought back from a dropped set to beat 31st-seeded Frenchwoman Alize Cornet by a 4-6, 6-3, 6-1 decision on Court Chatrier. A two- time quarterfinalist at Roland Garros, the Belarusian star has now reached the round of 16 in nine of the last 10 Grand Slams.

Up next for Azarenka will be either France's Marion Bartoli, the 13th seed, or Francesca Schiavone, the 2010 French Open champion and 2011 runner-up.

Sloane Stephens also advanced to the fourth round with a three-set triumph. The 17th-seeded American overcame bouts of shaky play to battle past Marina Erakovic 6-4, 6-7 (5-7), 6-3 on Court 1. Erakovic was the first woman from New Zealand to reach the third round at the French Open.

Stephens, an Australian Open semifinalist, will next face the winner of the match between Russian Maria Sharapova, the defending French Open champ, and China's Zheng Jie.