STUTTGART, Germany -- Andrea Petkovic of Germany will miss the next three months after tearing ligaments in her right ankle at the Porsche Grand Prix.
Petkovic says a scan confirmed the injury on Friday. She twisted her ankle in Thursday's match against top-ranked Victoria Azarenka in the second round.
Petkovic entered her first tournament since January ranked No. 12. She had been sidelined with a lower back injury.
She also has been nursing a right knee injury.