Istanbul:Tsvetana Pironkova beat Olga Govortsova 6-4, 2-6, 6-2 on Monday to set up a second-round match against Maria Sharapova in the Istanbul Cup.
The top-seeded Russian had a bye in the first round of the clay-court tournament.
Second-seeded Elena Dementieva also had a bye and will play Jelena Kostanic Tosic. The Croat beat Yaroslava Shvedova 2-6, 6-3, 6-4 in the first round.
Fifth-seeded Alona Bondarenko dropped only one game to beat Pemra Ozgen of Turkey 6-1, 6-0, while seventh-seeded Agnieszka Radwanska defeated Ekaterina Bychkova 7-5, 7-5.
The field also includes fourth-seeded Venus Williams who is due to face Tatiana Putchek in the first round.