Timing is one of the most important technical elements in tennis. It is the ability to take the racquet-head to the ideal contact point at precisely the right time. For every srtoke there is an ideal contact point and missing this precise spot will usually result in a suboptimal shot. Therefore once your swing pattern is within the optimal technical range, the most important factor determining the effectiveness of your shot is your ability to consistently hit the ball in the right place. Here is an exercise that works on exactly that.