Originally Posted by cc0509
That is because Federer is old in tennis years now.
No, this is not a new thing. Federer was really moody and angry when playing Nadal in the 2005 Miami championships. Federer was pushed to his limit, Nadal was running down overheads, hitting clean winners off of Federers famous I/O forehands, and just doing everything he could to make Federer play the extra ball and it drove Federer nuts. Nadal, Djokovic, and Murray have defensive capabilities that Federer will never have , which is no big deal since Federer has always implied that all court tennis was the finest way to play tennis and I tend to agree with him.