Which of the following is not a responsibility of the first referee?

The first referee holds several critical responsibilities during a volleyball match, which include ensuring the legality of uniforms, calling fouls, and deciding on disciplinary actions. Among these duties, making substitutions is not one of the primary responsibilities of the first referee. Instead, substitutions are typically managed by the second referee or a designated scorer.

This distinction helps maintain the flow of the game and allows the first referee to focus on overseeing the match's conduct and enforcing the rules effectively. Understanding the specific roles of each official in a volleyball match is crucial for recognizing how the game operates smoothly and ensures fairness.