Second-seeded Daniela Hantuchova of Slovakia defeated Lourdes Dominguez Lino of Spain 6-3, 7-6 (6) to reach the second round of the Monterrey Open.
The Slovakian next faces Kaia Kanepi of Estonia.
In a key second-round match, third-seeded Anastasia Pavlyuchenkova of Russia defeated Polona Hercog of Slovenia, 6-2, 6-3. Hercog reached the final last weekend against Venus Williams in Acapulco in the Mexican Open, a clay—court tournament.
Pavlyuchenkova faces Klara Zakopalova of Czech Republic in the quarterfinals. Zakopalova defeated Patricia Mayr of Austria, 6-4, 6-3, while Alize Cornet of France ousted seventh-seeded Aleksandra Wozniak of Canada, 6-2, 6-3.
Also in the second round in the outdoor hard-court tournament, American Vania King defeated Julie Coin of France 6-3, 6-3.
Top-seeded Jelena Jankovic of Serbia made a surprise first—round exit on Tuesday.