Ana Ivanovic defeated third-seeded Vera Zvonareva 6-2, 6-1 in the China Open.
Ana Ivanovic demolished third seed Vera Zvonareva 6-2, 6-1 as the upsets continued at the China Open on Wednesday, where Agnieszka Radwanska ended home hopes on the womens side of the draw.A revitalised Ivanovic, 23, became the first player into the quarter-finals as she showed the kind of scintillating form that once made her the highest-rated player on the womens tour.Pole Radwanska meanwhile beat the remaining Chinese Zheng Jie 6-1, 6-4 to break home hearts.The 11th seed took an hour and a quarter to win in the Chinese capitals showcase event, saving five of six break points in the match and breaking Zheng four times.Local fans were pinning their hopes on Zheng after French Open winner and national sporting heroine Li Na, ranked sixth in the world, crashed out in the first round of the ATP-WTA event.Her victor, Romanian Monica Niculescu, proved her performance was no fluke, advancing to the third round after defeating Chanelle Scheepers of South Africa 6-2, 6-1.Second seed Victoria Azarenka also went through at the National Tennis Centre, with a 7-6 (10/8), 6-3 victory over Polona Hercog of Slovenia.German number nine Andrea Petkovic reached the last eight as she beat French eighth seed Marion Bartoli 4-6, 6-4, 7-5.In the mens draw, third-seeded Tomas Berdych, who has been battling a shoulder problem since the summer, advanced at the expense of German Philipp Kohlschreiber, 6-2, 6-0.Unseeded Spaniard Fernando Verdasco defeated Italys Flavio Cipolla 2-6, 6-1, 6-2.The 2004 finalist Mikhail Youzhny also went through to the third round when he beat Feliciano Lopez, 6-7 (5/7), 6-2, 7-5.