Well, i'm a half-full person. Instead of looking at the negative side, why not look at the bright side. Federer lost to Nadal for the 3rd time in Roland Garros, but its no doubt that he has improved his clay court game this year. I think this loss will encourage Federer to work harder. You can see that he's putting effort improving his backhand. He can get even fitter which i think he knows that. All these losses will only make him to continue to improve.