India's number one Sania Mirza tumbled out of Wimbledon in the second round, losing 6-4, 6-4 to Romanian number 28 seed Sorana Cirstea on Wednesday.
Mirza was able to break her friend's serve but hit far more unforced errors than the French Open quarter-finalist.
Cirstea faces either Belarussian number eight seed Victoria Azarenka or Romanian Ioana Raluca Olaru in the third round.