Originally Posted by sureshs
No hitting change? Racket angle, trajectory, etc.?
You focus way to much on racket face angle. Most people know the right angle just through feel and practice. If you're worrying about something like that in a match, your strokes will break down.
I remember reading a great quote from federer where he was asked about his groundstroke technique. He basically said that all the top players look about the same when they make contact with the ball. The differences before they get their are mostly stylistic.
Federer doesn't worry about changing his racket face angle. In fact he tries to keep it the same every time. Your should do the same. Worry about things like timing, prep, and footwork. If you're trying to alter your racket face angle every time you will be an unforced error machine.