By Greg Letts
The server (Player A) is free to use whatever serves he wishes, and the receiver (Player B) must attempt to return the serve while keeping the ball out of the marked area.
Purpose of the Drill
The marked area is used to represent the area which is generally dangerous for a receiver to return the ball to. Returns made to the marked area are usually going to bounce once and go off the end of the table, allowing the server to attack with a full swing. In addition, in most cases returns in this area are not deep enough to push the server back from the table when attacking, and can be easily reached by the server with minimal footwork (excluding those returns placed at the server's playing elbow).
In this drill, the server gets to practice his full range of serves, and he should also try to force his opponent to return the ball in the marked area as often as possible. This will allow the server to see how well his serves can control his opponent.
The receiver should be attempting to return the ball outside the marked area wherever possible. In general, returns outside the area will more difficult for the server to attack, since they will either be very short, very deep, or angled to the sides of the table, making the server move more in order to attack.
Further Extensions to the Drill