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The Assistant Referee

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In professional soccer there are two assistant referees whose job it is to call offsides, throw-ins and help the referee make decisions.

Carrying a flag to signal their observations, assistant referees, or linesmen as they are also known, must monitor the sidelines and goal lines and flag if the ball goes out of play, signaling which team the goal kick or throw-in should be awarded to.

A key aspect of their job is deciding whether a ball has crossed the goal line between the posts when the call is marginal.

Assistant referees must also indicate when a substitution is requested, when misconduct or any other infringement occurs out of the referee’s view, when they have a better view of an offense than the referee, and when the goalkeeper moves off the line before a penalty is taken and whether the ball has crossed the line.

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