There is a likely chance of Nadal meeting Federer in the semis... It should be a good match provided Nadal doesn't play the injury card again... Looking at the draw and the favourites for the final should Djokovic and Federer.. though Djokovic would be left with less energy at the finals, since all his opponents are grinders. But, Nadal the best grinder has already started to have injuries but even if fully fit, Fed should do the job.