As much as I am a fan of Federer too, Nadal has kind of won over my heart in the last few years owing to his tireless mental strength. It seems like men have all got competitive but Federer has pretty much remained the same, and thus, you see much closer games with Federer. Djokovic on the other hand, seems to have come leaps and bounds since he was a runner-up in 2007. I think this will be pretty close to call, and based on recent form, Djokovic has the game to beat Nadal and the same testicular fortitude.