AUCKLAND, NEW ZEALAND - JANUARY 04: Madison Brengle of USA reacts after winning her match against Serena Williams of USA on day three of the ASB Classic on January 4, 2017 in Auckland, New Zealand. (Photo by Anthony Au-Yeung/Getty Images)
AUCKLAND, NEW ZEALAND - JANUARY 04: Madison Brengle of USA reacts after winning her match against Serena Williams of USA on day three of the ASB Classic on January 4, 2017 in Auckland, New Zealand. (Photo by Anthony Au-Yeung/Getty Images)