This drill is for advanced players.
Set-up:
The coach is just inside the baseline (having a basket of balls nearby). The player is ready to serve (opposite side from the coach). Targets are placed just inside the service line (on coach’s side) and towards the center line – see graphic below.
Drill:
The player will attempt to hit body serves (toward the targets). The drill begins only if the player directs the serve at or close to the targets (which would be to the opponent’s body, during a match) when the coach will follow with a short ball feed for the player to attack and direct it to the open court.
This drill would simulate a serve into the body followed by a weak reply from the returner which the server will attack with an aggressive topspin approach to the open court.
Do this drill on both sides (ad and deuce).

body serve