Djokovic gunning for Slam record

French Open, Olympic gold also on wish list for world No 1

Winning four of the past five Grand Slam titles has Novak Djokovic thinking about surpassing Roger Federer's record 17 Slam titles, but it is not a major motivation for the world No 1 just yet.

The 28-year-old Serbian superstar, who captured his 11th Grand Slam crown at the Australian Open in January, won his fourth title of the year on Sunday, beating Japan's Kei Nishikori 6-3, 6-3 in the Miami Open final.