Novak Djokovic of Serbia, celebrates after defeating Rafael Nadal of Spain, 6-3, 6-3 during the men's final match at the Sony Open Tennis tournament on Sunday, March 30, 2014, in Key Biscayne, Fla. (AP Photo/Wilfredo Lee)
Rafael Nadal, of Spain, returns a shot from Novak Djokovic, of Serbia, during the men's final match at the Sony Open Tennis tournament on Sunday, March 30, 2014, in Key Biscayne, Fla. (AP Photo/J Pat Carter)
Novak Djokovic, of Serbia, serves to Rafael Nadal, of Spain, during the men's final match at the Sony Open Tennis tournament on Sunday, March 30, 2014, in Key Biscayne, Fla. (AP Photo/Lynne Sladky)
Rafael Nadal, of Spain, returns a shot from Novak Djokovic, of Serbia, during the men's final match at the Sony Open Tennis tournament on Sunday, March 30, 2014, in Key Biscayne, Fla. (AP Photo/J Pat Carter)
Novak Djokovic, of Serbia, waves after defeating Rafael Nadal, of Spain, 6-3, 6-3 during the men's final at the Sony Open Tennis tournament on Sunday, March 30, 2014, in Key Biscayne, Fla. ( AP Photo/J Pat Carter)