What does the signal for a "substitution" look like?

The signal for a "substitution" in volleyball is characterized by an open hand signal held above the head. This specific gesture is standardized in the sport to clearly communicate to officials, players, and spectators that a substitution is being requested. The open hand held above the head is easily visible and distinguishable, ensuring that everyone on the court recognizes that a player is about to enter or exit the game. This clarity is essential in maintaining the flow of the game and adhering to the rules regarding player substitutions.

While other motions, such as a raised fist or a wave with both hands, may indicate different actions or commands in various contexts, they do not pertain to the substitution process in volleyball. Clapping, likewise, does not convey any official signal regarding player changes. Therefore, the open hand signal above the head remains the correct and accepted method for indicating a substitution.