Two-time Grand Slam champion Victoria Azarenka of Belarus reached the third round at the French Open by beating Andrea Petkovic 6-1, 7-6 (3).
The 15th-seeded Azarenka had only 13 unforced errors to Petkovic's 42.
Azarenka has twice won the Australian Open and was a semifinalist at Roland Garros in 2013.
The 34-year-old Petkovic reached the French Open semifinals in 2014 but has not been beyond the third round at any Grand Slam since then. She is a five-time clay-court champion on the tour.
