If the coach designates two Liberos, can both be used interchangeably?

The correct understanding is that if a coach designates two Liberos, both can indeed be used interchangeably. This means that at any point during the match, the coach can substitute either Libero in and out of the game as needed, while adhering to the rules that govern Libero substitutions.

In volleyball, the role of the Libero is specific; they are defensive specialists who cannot attack the ball above the net's height and cannot serve in most cases unless specific exceptions apply. Designating two Liberos allows for greater flexibility in managing player rotations and adapting to the flow of the game. The key point is that both Liberos can be utilized as needed throughout the match, contributing to defensive strategies without being restricted to the court simultaneously.

The other choices may misrepresent the rules regarding the use of Liberos. For example, stating that only one can be on the court at a time does not account for the allowance of substitutions in the game, which is a fundamental aspect of how Liberos function in volleyball. This flexibility is designed to enhance tactical play, allowing coaches to exploit matchups or manage player fatigue during the game.