Originally Posted by Djokovicfan4life
Because he's trying to hit a flatter ball. Duh.
Still being childish I see.
My point was only about his finish. In my opinion, his standard forehand (whatever standard means to me) is a shot straight across his body, ending below the shoulder.
By the way, a lower finish doesn't necessarily mean flatter. Sampras finished high all the time and hit a pretty flat ball. Federer finishes quite low and hits with more topspin than Sampras. There are a lot of factors involved.