(CNN) -- Maria Sharapova has been forced to pull out of the WTA Rogers Cup tournament in Toronto next month, still plagued by a nagging left hip injury. Organizers of the prestigious hard court tournament announced Sunday that the four-time grand slam champion had withdrawn from the event that starts August 5. World No.2 Sharapova has not played since sensationally losing to Portuguese qualifier Michelle Larcher de Brito in the second round at Wimbledon on the opening Wednesday. "I am extremely disappointed that I am unable to play in Toronto next week as it's one of the best and most important tournaments of the year," the Russian said.
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Maria Shapapova pulls out of WTA tournament in Toronto
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Hip injury leaves her short of match practice ahead of U.S. Open
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