Local favourite Sania Mirza defeated Israeli Tzipora Obziler 4-6 6-3 7-6 (7-5) to reach the semi-finals of the Hyderabad Open in India on Thursday. Mirza will next face Russian Maria Kirilenko, who stunned Chinese top seed Li Na 6-4 6-3.
In Thursday's other quarter-final action, Germany's Anna Lena Groenefeld beat Sun Tian Tian 7-6 (7-5) 6-3.
Ukrainian Alyona Bondarenko battled past Canadian opponent Marie-Eve Pelletier 7-6 (7-5) 6-4.