Zvonareva, Peer into Prague quarters

Top-seeded Vera Zvonareva advanced to the quarterfinals of the Prague Open when wild-card Magdalena Rybarikova withdrew on Thursday. The 13th-ranked Russian will next play Roberta Vinci. Second-seeded Shahar Peer defeated Tsvetana Pironkova 7-5, 6-2 and will play Klara Zakopalova, who defeated Vera Dushevina 6-4, 1-6, 6-3. Also in the second round, third-seeded Victoria Azarenka knocked out Tatiana Poutchek 6-2, 6-2 and will play wild-card Karolina Pliskova. [link]