What Restart Follows an Offside Offence in Football

At what exact moment is an offside position determined during active play?

An offside position is judged at the precise moment the ball is touched or played by a teammate.

• Head and feet: These are the primary markers used to determine if a player is closer to the opponent's goal line than both the ball and the second-to-last defender.
• Mid-field line: A player cannot be in an offside position if they are situated within their own half of the field when the ball is played.
• Second-to-last defender: This individual is typically the last outfield player, as the goalkeeper usually counts as the first defender.

Which parts of a player's body are excluded when judging offside positioning?

When determining offside, officials ignore any part of the head, body, or feet that cannot legally score a goal. This means that if a player is leaning forward but their arms are beyond the last defender, they are not offside because arms cannot be used to strike the ball into the net. This distinction is vital for maintaining fairness, as it prevents players from being penalized for natural running motions that extend their reach.

For example, a striker might have their shoulder and chest in an offside position, but if their trailing foot is level with the defender, they remain onside. An important nuance exists regarding the goalkeeper; if the goalkeeper is out of position, the second-to-last defender—often a fullback—becomes the reference point for the offside line, regardless of where the goalkeeper is standing.

Under what specific circumstances is a player in an offside position not penalized?

A player in an offside position is not penalized if they do not become involved in active play at the moment the ball is touched.

• Passive play: Merely standing in an offside position isn't an offence unless the player touches the ball or impedes an opponent.
• Deflection: If an opponent deliberately plays the ball, such as a missed clearance, the offside player is generally considered to have gained the ball legally.
• Goal kick: The rules explicitly state that no offside offence occurs when a player receives the ball directly from a restart of this type.

How does the interpretation of 'interfering with an opponent' affect an offside ruling?

Interfering with an opponent occurs when a player prevents an adversary from playing the ball, obstructs their vision, or challenges them for possession. A lot of people assume that just being near the ball makes you offside, but you must actually impact the opponent's ability to play or move toward it. If you're standing five yards away from the play without making a move toward the ball or a defender, the referee will typically let play continue.

Can a player be penalized for offside if they receive the ball directly from a goal kick?

No, a player cannot be penalized for offside if they receive the ball directly from a goal kick. This exception is codified in Law 11 of the Laws of the Game, which permits players to occupy any position during this specific restart.

What is the role of the assistant referee in identifying offside infractions?

The assistant referee holds the primary responsibility for flagging offside infractions by aligning themselves with the second-to-last defender. By tracking the defensive line, they can determine if an attacker has moved into an illegal position the instant the ball is played. They use their flag to signal the breach to the referee, who then makes the final decision on whether to stop play.

For instance, if an attacker sprints behind the defensive line just as a pass is released, the assistant raises their flag vertically to indicate the violation. A nuance occurs when the referee chooses to play advantage; if the attacking team maintains possession despite the offside, the referee may wave play on, effectively overriding the assistant’s flag. This requires constant communication, as the assistant must decide if the player's movement truly impacted the defensive setup.

How does the concept of 'gaining an advantage' apply to rebounds off the goalpost or goalkeeper?

Yes, a player is penalized for gaining an advantage if they touch the ball after it rebounds off the goalpost, crossbar, or goalkeeper. This counts as a new phase of play where the original offside position is still punished.

Are there any exceptions to the offside rule during throw-ins or corner kicks?

There is no offside offence if a player receives the ball directly from a throw-in, goal kick, or corner kick.

Use these categories to quickly determine if the offside rule is suspended during specific dead-ball situations.