Both Roger Federer and Novak Djokovic have said that they believe Rafael Nadal is favourite ahead of the French Open.
The 25-year-old Spaniard is going for an unparalleled seventh Roland Garros title in Paris.
World number one Djokovic, 25, is also looking to make history by being the first man since Rod Laver in 1969 to hold all four Grand Slam titles following victories at Wimbledon and the US Open last year alongside this year's Australian Open.
"[Nadal] is always favourite here," said Djokovic. "This is an opportunity very few tennis players will get. I'm aware of that but accept it as a challenge."
Federer, 30, is searching for his 17th slam at the French Open and feels he will start third favourite in the French capital.
"Rafa is the favourite for me," said Federer, the 2009 champion in Paris. "I think he has lost only two sets between [the Masters Series events in] Rome, Monte Carlo and Barcelona, so that's a pretty good start.
"Then he's playing for his seventh title, so no discussion. I know how incredible he can be here in Roland Garros. For me it would be Rafa, Novak, and me in third position."
The second Grand Slam of the year gets underway next week.
