Serena Williams, having defeated Elena Dementieva in straight sets today, is now 3-0 at the Sony Ericsson Championships. Also winning in the maroon group was Venus Williams, who defeated Svetlana Kuznetsova.
In the white group, Caroline Wozniacki defeated Vera Zvonareva 6-0, 6-7, 7-6. Zvonareva entered the competition as an alternate when Dinara Safina retired with a lower back injury yesterday. Now, Zvonareva has withdrawn from Doha because of a right ankle injury. For her part, Wozniacki developed a leg cramp at 3-1 in the third set, and was in considerable pain by the end of the two-hour and 48-minute match. At one point, she collapsed on the court.
Tomorrow, in the white group, Wozniacki (2-0 so far) will play Jelena Jankovic (1-1), and 2nd alternate Agnieszka Radwanska will play Victoria Azarenka (1-1). In the maroon group, Kuznetsova (0-2) will play Elena Dementieva (1-1).