Ivanovic, who reached the Australian Open final last season and had the No. 1 ranking for part of the year after winning the French Open, set up triple match point on Kvitova’s serve and clinched it with a forehand winner.
The 21-year-old Serb will next play Italy’s Roberta Vinci, who beat Germany’s Anna-Lena Groenefeld 0-6, 6-3, 6-1.
