Federer's movement is clearly his biggest weakness these days; he's just a bit sluggish from the baseline. Look at the last few guys to beat him in the Slams, Del Potro, Soderling, Berdych, Djokovic, and obviously Rafa. These guys are all big hitters and his movement is being exposed. With all his great strenghts, I think his movement has been his biggest, and now that he's nearing 30 and finding himself up against the bigger hitters more often, he's starting to struggle.


