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AUCKLAND, NEW ZEALAND - JANUARY 06: Christina McHale of the USA plays a forehand during her singles match against Caroline Wozniacki of Denmark on day three of the 2016 ASB Classic at ASB Tennis Arena on January 6, 2016 in Auckland, New Zealand. (Photo by Phil Walter/Getty Images)

AUCKLAND, NEW ZEALAND - JANUARY 06:  Christina McHale of the USA plays a forehand during her singles match against Caroline Wozniacki of Denmark on day three of the 2016 ASB Classic at ASB Tennis Arena on January 6, 2016 in Auckland, New Zealand.  (Photo by Phil Walter/Getty Images)