Offside is a rule in
bandy which states that if a player is in an offside position when the ball is touched or played by a team-mate, the player may not become actively involved in the play. A player is in an offside position when closer to the opponent's goal-line than both the ball and the second-to-last defender (which is usually the last outfield player), and also in the opponent's half of the
bandy field. "Offside position" is a matter of fact, whereas committing an "offside offence" occurs when a player is "actively participating" and is subject to the interpretation of the referee. Goals scored after committing an offside offence are nullified if caught by the referee.