AUCKLAND, NEW ZEALAND - JANUARY 04:  Ana Ivanovic of Serbia plays a forehand during her first round doubles match with Kirsten Flipkens of Belgium against Andrea Hlavackova and Lucie Hradecka of Czech Republic during day one of the 2016 ASB Classic at the ASB Tennis Arena on January 4, 2016 in Auckland, New Zealand.  (Photo by Hannah Peters/Getty Images)