see more

Defending champions Serena Williams of the US (L) and Novak Djokovic of Serbia (R) share a light moment during a photocall ahead of the Australian Open tennis tournament draw in Melbourne on January 15, 2016. / AFP / PAUL CROCK (Photo credit should read PAUL CROCK/AFP via Getty Images)

Defending champions Serena Williams of the US (L) and Novak Djokovic of Serbia (R) share a light moment during a photocall ahead of the Australian Open tennis tournament draw in Melbourne on January 15, 2016.      / AFP / PAUL CROCK        (Photo credit should read PAUL CROCK/AFP via Getty Images)