The top seeds in both the men's and women's events at the New Haven Open lost on Thursday as Russian pair Svetlana Kuznetsova and Nikolay Davydenko bowed out with quarterfinal defeats.
World number six Kuznetsova was unable to shake off former number one Amelie Mauresmo of France, who staved off five set points in the opener on her way to a 7-6, 2-6, 6-3 upset win over the 24-year-old.
American Sam Querrey overpowered Davydenko in a dramatic 6-3, 3-6, 6-4 triumph.
Sania to meet Govortsova in 1st round
Sania Mirza will open her US Open tennis campaign against Olga Govortsova of Belarus. It will be Sania's third meeting with Govortsova. Sania won their first meeting and conceding the second time midway through.
All-India final in ITF
The stage is set for an all-India clash in the final of the $10,000 (Rs 5 lakh) International Tennis Federation (ITF) tennis tournament. Top seed Vishnu Varadhan and second seed Yuki Bhambri will lock horns for the title, after registering convincing wins, in New Delhi on Friday.