Maria sharapova has been defeated by unseeded Oudin in the third round of the U.S.Open.  Oudin enter into the fourth round of U.S.Open Tennis after back to back stunning victory over fourth seed Elena Dementiva and 29th seed Maria Sharapova.  Oudin defeated Maria Sharapova by 3-6, 6-4, 7-5.  Maria Sharapova's match conceeded too many double faults and unforced errors that caused her defeat in the U.S.Open.