Don't you misjudge Federer because we don't know what he could show off in the midst of the game. In fact his moves can really be appreciated in terms of quick targets upon playing the tennis. The performance won't be based on how we perceived on his age, but what's important here was the outcome on his different games and matches with selected great tennis players. I do hope that he's going to match up with different categories which can prove his capabilities even with his age.