Soccer Offside Rule Explained: When Is a Player Offside and Why

The Basic Offside Rule

A player is in an offside position if they are nearer to the opponent goal line than both the ball and the second-to-last opponent (usually the last defender, since the goalkeeper is typically the last opponent) at the moment the ball is played to them by a teammate.

Key Conditions

Being in an offside position is not an offense in itself. A player is only penalized if they are in an offside position AND involved in active play by: interfering with play (playing or touching the ball), interfering with an opponent (blocking their view or challenging for the ball), or gaining an advantage (playing the ball after it rebounds off the post or an opponent).

When Offside Does NOT Apply

A player cannot be offside: in their own half of the field, from a goal kick, from a throw-in, from a corner kick, or if they receive the ball directly from an opponent who deliberately plays it.

The Moment of Judgment

Offside is judged at the instant the ball is played by a teammate, not when the player receives it. This means a player can be behind defenders when the pass is played but run onto the ball ahead of them and still be onside.

VAR and Offside

Video Assistant Referee technology has made offside calls more precise. Semi-automated offside technology (used in the 2022 World Cup and Champions League) uses 12 tracking cameras and a sensor in the ball to create 3D offside lines. The margin can be as small as a toe or shoulder being ahead.

Common Controversial Scenarios

Deliberate Play vs. Deflection

If a defender deliberately plays the ball (even poorly), offside is reset. But if the ball deflects off a defender without them attempting to play it, the original offside position stands. This distinction causes the most debate.

Arms and Hands

For offside purposes, the arm (from the shoulder down) is not considered part of the body. Only the head, body, and feet count when determining offside position.

Punishment

An offside offense results in an indirect free kick for the opposing team, taken from where the offense occurred (even if that is in the offending team own half).