Serbia's Novak Djokovic returns the ball to Switzerland's Roger Federer during men's final match of the BNP Paribas Open at Indian Wells Tennis Garden on March 16, 2014 in Indian Wells, California.  Djokovic won 3:6, 6:3 and 7:6.    AFP PHOTO / Joe KLAMAR        (Photo credit should read JOE KLAMAR/AFP via Getty Images)