Novak Djokovic: Rafael Nadal, Roger Federer remain biggest threats

Novak Djokovic believes that Rafael Nadal and Roger Federer still represent the biggest rivalry in tennis, despite the Serbian's regular duels with the Spaniard.

The world number one suffered defeat to Nadal in the final of the French Open yesterday, which marked the Spaniard's record seventh Roland Garros win.

"Obviously Federer and Nadal have still, I think, the biggest rivalry in the sport," said Djokovic. "Because they have been at the top for so many years, they have been so dominant. I mean, I just joined that rivalry, I think, you know, just recently, couple years ago.

"We are very young, and we played over 30 times against each other, and hopefully we can have many more battles in the next years."

Djokovic has yet to claim a French Open title.