The 22-year-old fifth seed — ranked 18 in the world — took 1hr 41minutes to defeat her seventh-seeded opponent and 2011 US Open champion and record only her second win in five meetings with the Australian.
Meanwhile, Richard Gasquet battled back from a set down to beat Kazakhstan’s Mikhail Kukushkin 4-6, 6-4, 6-4.
Photos: Kareena Kapoor Khan and Aamir Khan at Mumbai airport
Photos: SRK, wife Gauri, Aishwarya Rai, Shweta Bachchan at Vogue Awards
Photos: Harbhajan Singh-Geeta Basra's TV outing with daughter Hinaya
Photos: Malaika Arora flaunts ripped jeans like a boss!
Photos: Vaani Kapoor, Kriti Sanon, Dia Mirza sizzle on the ramp