Former world number one Martina Hingis has pulled out of the French Open because of a hip injury.
|Hingis has been struggling with a hip and back problem|
The 26-year-old, who has yet to add the French to her Grand Slam collection, will be replaced by fellow Swiss Emmanuelle Gagliardi.
Hingis was joined on the withdrawal list by Russian Evgenia Linetskaya, who pulled out for personal reasons.
Thailand's Paradorn Srichaphan and German Nicolas Kiefer will also both miss the event with wrist injuries.
Hingis has won five Grand Slam singles titles - three Australian Opens, one Wimbledon and one US Open.
The year's second Grand Slam begins at Roland Garros in Paris on May 27.