Nadal, a thorn in Djokovic's side as he eyes French Open next year

World No 1 Novak Djokovic, who has never bagged a French Open title, admits that he has got one problem on the clay court and that is Rafael Nadal.

Djokovic, who reached his second final at Roland Garros in the past three years, believes that he has been there pretty close a few times, adding that he would push hard to clinch his maiden French Open title as Nadal clearly dominates the tournament winning the title for a record nine times, Sport24 reported.

Djokovic believes that he has the self belief to keep on going and hopes to clinch one trophy there by the end of his career.

Commenting on the rise of young players like Nishikori, he further said that next year would be an interesting year as they have proved it to everybody that they have the mettle to challenge top seeds.

Djokovic lost to Federer 6-5 in a fast paced single set at the International Premier Tennis League held in New Delhi. However, Djokovic's UAE Royals eventually defeated Federer's Indian Aces 29-22 in the third leg of the IPTL, which moves to Dubai next.