Man I got up this morning to an 0-4 Fed start. That will remind him to shut up about an opponent and actually concentrate on beating him. This might actually be Fed's first straight set loss after RG '04.
I think he's putting too much thought into Andreev's win against Nadal on clay.
Andreev when he's on his game has as much action on the ball as Nadal if not just a little more.
Federer probably thinks giving Nadal a dose of his own medicine is the way to go with this match.
It's not going to work.
He needs to keep the pressure up on Nadal's backhand and hit every shot in his arsenal at it until he can find an opening to net.