Last reviewed: April 2025
Offside
SoccerWhen does being ahead of the defender actually matter?
Rule
A player is in an offside position if any part of their head, body, or feet is in the opponents' half and closer to the opponents' goal line than both the ball and the second-last opponent. Being in an offside position is not an offense by itself — it only becomes one if the player is involved in active play.
Common Misconception
Many fans think offside is called the moment a player runs past the last defender. It isn't. The position that matters is where the player is when the ball is played by their teammate — not where they are when they receive it. A player can sprint past the entire defense after the ball is played and still be onside.
What Matters in the Moment
The assistant referee watches the second-to-last defender (usually the last outfield player) and the attacker simultaneously at the exact moment the ball is played by a teammate — whether that's a pass, a header, or a flick. Any body part that can legally score a goal — head, body, feet — is the reference point. Arms don't count. The call must be made based on that precise frame, not before or after.
Ruleset Note
IFAB Laws of the Game (Law 11) apply at all levels. For VAR-enabled competitions, the offside line is drawn from the most advanced body part that a player is legally allowed to score with.
Realistic Example
The Call
A midfielder plays a through ball. The forward is level with the last defender when the ball is played, receives it, and scores. The AR keeps the flag down — correctly. Level is onside.
The Murky Case
A forward is clearly behind the last defender but the ball deflects off an opposing defender on its way through. Is the forward offside? Yes — a pure deflection does not reset the offside position. The forward was offside at the moment the pass was played, and the deflection doesn't change that. It would be different if the defender deliberately played the ball — that resets the offside position. Referees assess deliberate play based on factors like whether the defender had a clear view of the ball, time to react, and control over their movement — but it's a judgment call, not a checklist. A frantic stab or instinctive block is not deliberate play.
Honest Take
Offside is one of the few calls in soccer that is genuinely binary and objective — the player either was or wasn't past the defender when the ball was played. The controversy almost always comes from the inherent difficulty of freezing two moving bodies at the exact right millisecond, not from referee discretion. VAR has made the call more accurate but also more pedantic; a toenail offside wasn't really what the law intended to prevent.
Last reviewed: April 2025
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