keywords: sharapova wta dementieva elena wimbledon
text: Sharapova on Course for Third Title with Dementieva Win  ZURICH (Reuters) - Wimbledon champion Maria Sharapova  remained on course for a third successive WTA title by beating  fellow Russian Elena Dementieva 4-6, 6-2, 6-3 in the  semi-finals of the Zurich Challenge on Saturday.