The players playing the match must be on the roster and there are no playbacks allowed. Teams may make up an individual match if they need to, but under no circumstances are teams allowed to record a score for a player who did not play the match! Not only is this unethical, it negatively impacts the handicaps for both the player who shot the match and the player who is recorded as shooting the match. If you do not know your opponent, please ask them for I.D.