What is the role of an assistant referee in AYSO matches?

The role of an assistant referee in AYSO matches is primarily focused on assisting the main referee by providing input on various aspects of the game, particularly regarding offside situations, fouls that may not be visible to the center referee, and determining when the ball has gone out of bounds. This support is essential in ensuring that the game is officiated fairly and accurately. Assistant referees use their vantage points from the sidelines to observe player positions and actions that can significantly influence the game's outcome. Their responsibilities help the referee make informed decisions, promoting the integrity of the match.

While leading the match is the responsibility of the center referee, controlling the time is also solely managed by the referee rather than an assistant. Substitutions, although often coordinated with the assistant referee, are ultimately a decision made by the head referee based on the rules of the match and the team's requests. Hence, the assistant referee plays a crucial role in maintaining the flow of the game while providing critical information that contributes to fair play.