Simona Halep, the 2018 French Open champion, announced Friday she has withdrawn from this year`s tournament because she has failed to recover from a calf injury. 

"Unfortunately the tear in my left calf muscle needs more time to recover and the timeline is just too short," said Halep, the reigning Wimbledon champion. Halep sustained the injury in her second-round match at the Rome Open on May 12, and the world number three has deemed the recovery time too tight to be fit for the May 30-June 13 Roland Garros.