Vera Zvonareva beat fellow Russian Nadia Petrova 7-5 6-4 on Sunday to reach the quarter-finals of the Australian Open for the first time.
Zvonareva won the first set when Petrova dropped her serve in the 11th game on a double-fault and then broke her immediately at the start of the second.
{{^htLoading}} {{/htLoading}}
Zvonareva, seeded seventh at Melbourne Park this year, has not made a grand slam quarter-final since the 2003 French Open.
Her next opponent is Marion Bartoli of France, who earlier upset world number one Jelena Jankovic 6-1 6-4.
Advertisement
{{/htLoading}}{{#usCountry}}