That is according to former world No 1 and three-time Grand Slam champion Lindsay Davenport.
Nadal is the heavy favourite to win an 11th French Open title after dominating the clay-court season.
The Spaniard won 11th titles in Monte-Carlo and Barcelona but was beaten at the Madrid Open. However, the 31-year-old has bounced back to reach the quarter-finals of the Italian Open and faces Fabio Fognini today.
Nadal’s form and fitness on the clay are in stark contrast to his struggles at the beginning of the year when he was forced to retire at the Australian Open and withdraw from several tournaments.
I really feel something like that almost has to happen to take out Rafa [because] three out of five [sets] is a different animal
And Davenport believes only injury can stop Nadal’s momentum.
“We saw him get injured a couple years ago and he withdrew mid-tournament,” she told the Tennis Channel.
“I really feel something like that almost has to happen to take out Rafa [because] three out of five [sets] is a different animal.”
Rafael Nadal loves playing on the clay
And Davenport said the rest of the ATP Tour are intimidated by Nadal.
She said: “He is by far the commanding favourite. He is more physical; he loves the clay.
“Everyone is intimidated playing him. He looks fit and motivated. I think it’s Rafa’s year.”