More to come in my draw analysis, but here is a preview of Rafael Nadal's draw - it lines up easily for him all the way to the final.
Nadal's probable road to final:
R128 - Bolleli (ITA) 
- (may be Nadal's toughest
match to the SF - Nadal must get past the Roland Garros Giant Killer (Berdych, Del Potro) in the first round )
R64 - Istomin (UZB)  - (Fognini's puppet - need we say more?)
R32 - Mayer (GER)  - (Fell to Falla #120 at RG last year...)
R16 - Monaco (ARG)  - (Almagro's Spanish speaking pigeon [6-2])
QF - Almagro (ESP)  - (Ferrer's Spanish turkey [10-0])
SF - Ferrer (ESP)  - (Nadal's Spanish turkey [15-4])
Small upset chance #1: If Milos Raonic (CAN) 
can defeat Monaco, he might pose a threat to Nadal with his big serve and forehand. But he would have to blow Nadal off the Roland Garros court in 3 sets, and nobody has ever done that.
Bigger upset chance #2: if John Isner (USA) 
returns to his early spring form, wins his early round matches fairly easily and upsets David Ferrer. An in-form 2012 Isner can beat any player in the world. A semifinal of an in-form and not worn out Isner vs. Nadal would be a treat. Isner is the only man to ever take Nadal to 5 sets (last year), and Isner's play has improved since then. He can eat up Nadal's topspin and in my estimation has the fortitude to match Nadal. In the end, Isner beat Djokovic at Indian Wells on his testicular fortitude.
But one of Mr. Isner's problems has been showing the stamina he needs to go deep into a major event.
Given Isner's very recent clay form, I have doubts he can make it to the semifinal. But if he gets there, watch out!