Sharapova withdraws from the Bejing Olympics due to a shoulder injury . Russian star aggravated the injury in three -set win at the Bejing Olympics the year . Maria Sharapova now a serious doubt for the final grand slam at CNN .
Maria Sharapova withdraws from the Bejing Olympics due to a shoulder injury . Russian star aggravated the injury in three-set win at Rogers Cup Wednesday . Sharapova now a serious doubt for the final grand slam at Flushing Meadows .