Topspin

Topspin is forward rotation imparted on the ball so that it dips downward in flight and would bounce forward aggressively if the ball were allowed to bounce. In beach tennis, where the ball cannot bounce, topspin is used to bring powerful drives and groundstrokes safely over the net while aiming them deep. The topspin drive is a primary offensive shot in beach tennis, often used to attack a high ball or a loose volley from the opponent.

Ruleset: ITF  |  Rule Reference: ITF Beach Tennis Rules, Rule 9 (The Ball in Play)