World number one Novak Djokovic has insisted that Rafael Nadal is the "main favourite" for the upcoming French Open.

Djokovic goes into the tournament looking for his first title at Roland Garros, while defending champion Nadal is aiming to lift the trophy for an eighth time.

"Nadal is obviously the main favourite, the defending champ, and we all know how good he is on that surface," Djokovic is quoted as saying by Sky Sports News. "Then there's [Roger] Federer and myself, but anybody can win a Grand Slam."

Nadal defeated Djokovic in four sets last year to win a record seventh French Open crown.