Miami Open - Day 9

KEY BISCAYNE, FL - MARCH 29: Novak Djokovic of Serbia plays a forehand volley against Dominic Thiem of Austria in their fourth round match during the Miami Open Presented by Itau at Crandon Park Tennis Center on March 29, 2016 in Key Biscayne, Florida. (Photo by Clive Brunskill/Getty Images)