Ana Ivanovic lost in the third round of the French Open, falling to Sara Errani of Italy 1-6, 7-5, 6-3 on Friday.
The 13th-seeded Ivanovic, a former top-ranked player who won the French Open title in 2008, committed 37 of her 40 unforced errors in the final two sets. Errani had only 18.
Also, American teen Sloane Stephens advanced to the fourth round by beating Mathilde Johansson of France 6-3, 6-2. Of the eight teenagers in this year's draw, the 19-year-old Stephens was the only one to even reach the third round.
Later Friday, top-ranked Novak Djokovic and 2009 champion Roger Federer will play their third-round matches, while second-seeded Maria Sharapova will play in the second round.