If a player who is not on the roster scores a goal, what is the proper action by the referee?

When a player who is not on the roster scores a goal, the correct action by the referee is to disallow the goal. This is because only those players officially listed on the roster for that match are allowed to participate in the game, according to the rules set forth by the governing bodies of soccer. Allowing a goal scored by an unauthorized player would compromise the integrity of the match and violate the rules of competition, as player eligibility is fundamental to fairness in the game.

In this scenario, the referee must ensure that all participants are in compliance with the regulations, leading to the disallowance of the goal. It is essential for referees to maintain the integrity of the game by adhering to roster rules, ensuring that only those eligible players are recognized for their contributions during the match.