General, Lady TT, perhaps it's all part of the master plan? I think Rafa doesn't want to be seen as such a solid favorite going into Roland Garros anymore. It puts too much pressure on him. He prefers being the hunter, not the hunted.
He was light on matches and preparation going into Rome. Now he has 16 matches on clay going into Roland Garros. If he can get past the first 4 matches, he'll have 20 under his belt. That should be enough. Let's wait for the draw to see if there are any landmines he might have in the first 4 rounds.
If for some reason Rafa doesn't win it and gets upset, then I hope whoever does win, plays well to win it, and not get it due to injuries and poor play by the opponents. In that case, it would be interesting if someone outside the big 4 would win. But I can't see too many players who fit that description. Maybe Ferrer, maybe Wawrinka.
Ferrer has put in the time and effort. If anyone deserves a slam win, it is him, if he can do it.
Wawrinka is up and down, but he seems to be up at the right moments lately. IF he were to win, it would be the first time in about 20 years that someone has won the Australian and the French Open double - Jim Courier was the last to do so in 1992, and have a chance for a Grand Slam going into Wimbledon. Wilander was the only other player to do it since Laver, four years earlier, in his 3 slam year. Trouble is with Wilander and Courier is that their grass prowess was not so good. The same holds with Wawrinka.
Nishikori might be a dark horse, but he just seems to get injured too much to win 7 matches in a row. He is certainly competent enough on the clay. I can't see any other non-big 4 member getting it done.
Respectfully,
masterclass