MELBOURNE, AUSTRALIA - FEBRUARY 02:  Novak Djokovic of Serbia, coach Boris Becker, agent Edoardo Artaldi, and agent Elena Cappellaro pose with the Norman Brookes Challenge Cup after Djokovic won his men's final match against Andy Murray of Great Britain during day 14 of the 2015 Australian Open at Melbourne Park on February 2, 2015 in Melbourne, Australia.  (Photo by Clive Brunskill/Getty Images)