Andy Murray will likely have to get past defending champion Rafael Nadal if he is to reach the French Open final.
As was the case at last year's tournament, Murray was placed in the same half as Nadal on Friday, with top seed Novak Djokovic and Roger Federer on the other side of the draw.
Murray, the fourth seed, will play world number 69 Tatsuma Ito, of Japan, in the first round but has a tough-looking quarter-final in store if the seedings play out.
Spain's David Ferrer is a strong claycourter who is likely to trouble Murray should they meet. Before then, Murray is seeded to meet rising Australian star Bernard Tomic in the third round and Alexandr Dolgopolov in the last 16.
Nadal, who opens against Italy's Simone Bolelli, is due to face Janko Tipsarevic in the last eight.
In the top half, top seed Djokovic also plays an Italian in round one, namely Potito Starace, but could meet former world number one Lleyton Hewitt in the second round.
Djokovic is in the same quarter as the leading home hope, Jo-Wilfried Tsonga.
Federer starts against Tobias Kamke and his quarter-final opponent is due to be the big-hitting Tomas Berdych. The Swiss beat the Czech in the recent Madrid Open final.