Use the definition of extension and flexion of the wrist to understand how Federer hits his forehand and backhand volleys in the pictures below .
Federer extends his wrist to hit a forehand volley in front of his body.
Federer flexes his wrist to reach and lift wide low forehand volleys.
Federer flexes his wrist to hit a backhand volley in front of his body.
Federer extends his wrist to reach wide and low backhand volleys.
Lead with the edge of the racket into the ball to create the desired amount of spin on your serve.
The modern forehand is hit with an open stance. Agassi's feet are more facing the net.
Hook wide forehands back into the court by flexing the wrist and using a continental grip. This is a closed stance with the feet.
Don't stand so close to the net that you're playing in the green grass at Wimbledon.
You'll react better when your ready position has the racket in front of your non racket arm shoulder instead of directly in the middle of your body.
Learn to move your back foot sideways behind your front foot to side step volleys that are in too close to your body .
Judging a lob with both arms up in the trophy position can be very disorienting. Judge the ball like Federer and Roddick, and then raise your front arm and racket up to hit the ball.