BUDAPEST, July 7 (Xinhua) -- Patty Schnyder knocked out top seed Alisa Kleybanova in the second round of the 220,000 U.S. dollars GDF Suez Grand Prix in Budapest on Wednesday.
The veteran Swiss beat the 20-year-old Russian in straight sets, 6-4, 6-3. Kleybanova had eight break points in all but won none of them as the Swiss marched her fourth victory in a row over the Russian.
Schnyder, finalist at the same tournament in 2009, will face the eighth-seeded Polona Hercog of Slovenia in the quarterfinals. Hercog lost the first set in her match against Catalina Castano of Colombia but recovered to win 4-6, 6-4, 6-4, in a match that took over two and a half hours.
Earlier in the day, fifth seed Peng Shuai of China crashed out in straight sets, 6-1, 6-1, to the 20-year-old Latvian Anastasija Sevastova. Peng, in her first tournament in six weeks due to a stomach illness, struggled to find any rhythm against the Latvian and succumbed in just 48 minutes.
Sevastova, ranked 57th in the world, will play the winner of Anna Chakvetadze of Russia and second seed Alexandra Dulgheru of Romania, whose game was tied at one set apiece when it was stopped due to bad light.