The Tenndel serve is underarm, cross-court, and must bounce once in the opponent's service box before they return. It sounds simple — and it is — but mastering the placement and spin will give you a significant advantage.
Step 1: Stand behind the baseline with both feet behind the line. Hold the ball in your non-dominant hand at waist height. Your paddle should be ready at your side.
Step 2: Drop the ball and strike it underarm with a smooth, controlled motion. No overhead motion is permitted. The ball must travel diagonally into the opponent's service box.
Step 3: Aim for depth. A deep serve that lands near the back of the service box limits your opponent's return options and sets up your first volley.
Step 4: Mix up spin. A slight topspin serve will kick up after the bounce, making returns harder. Practice 20 serves to each corner of the service box before every session.
Download the full official rulebook for complete serving regulations, fault rules, and the double-bounce exception on serve returns.