I've always said that to beat Nadal in the French Open, there was ONLY ONE way :
make a superb drop shot just beside the post, with a little bit sliced effect :
he comes to take it running like crazy as usual ... and hurts the post.
That's the tactics which Wilander had advised Federer to beat Nadal in the French
(at least I believe so because he said he had a tactics to beat Nadal in the French ... and it's impossible with another way)
Great players always have great strategy