Re: How often will we see the French-Wimbledon double in coming years?
If Nadal is healthy, the only current player, I think, who can seriously threaten him at RG is Del Potro. All other guys who are good on the surface - Federer, Soderling, Berdych, Davydenko - worse than him, older than him, afraid of him. Of course, someone new might come around.
At Wimbledon, I think there is still a decent chance someone good and under-ranked player, serving big, catches him cold during the first week.
But , overall, if he is healthy, odds are, he'll do it again.