World tennis number 12 Andrea Petkovic will miss next month's French Open and the Wimbledon championships in June after tearing ligaments in her ankle.
The German only returned to the WTA tour at this week's Stuttgart Grand Prix following more than three months out with a stress fracture of her back. Now Petkovic is also doubtful for the London Olympics in July.
The 24-year-old turned her ankle while attempting a forehand in her second-round defeat by world number one Victoria Azarenka.