Final answer:
If a skater who is not listed on the scoresheet participates in the game and scores a goal, it would be considered an illegal play, and the goal would not count towards the team's score. It is important for teams to follow the rules and only have the designated skaters and goalkeepers on the scoresheet.
Step-by-step explanation:
In a game of soccer, the team is required to list eighteen skaters and two goalkeepers on the game scoresheet. If a skater who is not listed on the scoresheet participates in the game and scores a goal, it would be considered an illegal play. Generally, the skaters and goalkeepers listed on the scoresheet are the only players allowed to participate in the game.
When a player who is not listed on the scoresheet scores a goal, it is usually deemed as an invalid goal and does not count towards the team's score. The goal is typically disallowed, and the opposing team is awarded a goal kick or a free kick, depending on the game rules.
It is essential for teams to adhere to the rules and ensure that only the designated skaters and goalkeepers are on the scoresheet to avoid any confusion or unfair play during the game.