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MELBOURNE, AUSTRALIA - JANUARY 30: Australian Open runner-up Serena Williams of the United States and winner Angelique Kerber of Germany pose with their trophies after Women's Singles Final on day 13 of the 2016 Australian Open at Melbourne Park on January 30, 2016 in Melbourne, Australia. (Photo by Scott Barbour/Getty Images)

MELBOURNE, AUSTRALIA - JANUARY 30:  Australian Open runner-up Serena Williams of the United States and winner Angelique Kerber of Germany pose with their trophies after Women's Singles Final on day 13 of the 2016 Australian Open at Melbourne Park on January 30, 2016 in Melbourne, Australia.  (Photo by Scott Barbour/Getty Images)