MELBOURNE, AUSTRALIA - JANUARY 28: Serena Williams of the United States plays a forehand a point in her Women's Singles Final match against Venus Williams of the United States on day 13 of the 2017 Australian Open at Melbourne Park on January 28, 2017 in Melbourne, Australia. (Photo by Quinn Rooney/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 28:  Serena Williams of the United States plays a forehand a point in her Women's Singles Final match against Venus Williams of the United States on day 13 of the 2017 Australian Open at Melbourne Park on January 28, 2017 in Melbourne, Australia.  (Photo by Quinn Rooney/Getty Images)