How the video assistant referee actually reviews an offside call

A player is offside when, at the moment a teammate plays the ball, any part of the head, body or feet sits nearer the opponents' goal line than both the ball and the second-last opponent — but that position alone is not an offence. The Laws of the Game let the video assistant referee overturn the on-field call only for a "clear and obvious error," never for a fresh opinion on a close one.

That distinction — between where a player stands and what a player does — is the entire architecture of the offside law, and it is why the VAR's role in offside decisions is narrower than broadcasters' freeze-frame graphics tend to suggest. Understanding where the automation stops and the human judgment starts explains why some marginal calls take ninety seconds and others take nine.

What actually makes a position offside?

Under Law 11, a player is in an offside position if any part of the head, body or feet is in the opponents' half of the pitch (the halfway line itself does not count), and any part of the head, body or feet is nearer to the opponents' goal line than both the ball and the second-last opponent — usually the last outfield defender, since the goalkeeper is ordinarily the last. Hands and arms are excluded from the calculation for every player, attacker and defender alike, which is the detail most often missed by casual observers of a tight offside line. This is a positional snapshot taken at a single instant: the moment the ball leaves a teammate's foot, head or body, not the moment the receiving player collects it a stride later.

None of that, on its own, is punishable. A player can stand in an offside position for the entire ninety minutes without committing an offence, provided they never become involved in the passage of play that follows. The law separates the geometry from the infringement deliberately, and the second half of that separation is where most refereeing controversy actually lives.

When does an offside position become a punishable offence?

A player in an offside position commits an offence only when they become involved in active play by playing or touching a ball passed or touched by a teammate, by interfering with an opponent — obstructing their line of vision or challenging them for the ball — or by gaining an advantage after the ball rebounds or is deflected off the goalpost, crossbar, a match official, or is deliberately saved by an opponent. The law also carves out three specific exceptions: a player cannot be penalized for offside when receiving the ball directly from a goal kick, a throw-in, or a corner kick, regardless of their position when the ball is delivered.

This is the part of the law that requires judgment rather than measurement — whether a stationary attacker genuinely blocked a defender's view, for instance, is an interpretive call, not a geometric one. It is also why "offside" is really shorthand for two different questions stacked on top of each other, and why a technically correct offside position can still produce a legal goal if none of those involvement conditions are met.

What can the VAR actually review — and what can't it?

The video assistant referee automatically checks the television footage for every potential or actual goal, penalty decision or direct red card, offside included, but that automatic check exists to catch errors, not to relitigate marginal judgment calls. The governing protocol is explicit that the on-field decision "will not be changed unless the video review clearly shows that the decision was a 'clear and obvious error.'" For a factual, positional question like where a player's foot was when the ball was played, the protocol treats a "VAR-only review" as usually appropriate — the video assistant referee can establish the position from the footage and relay a finding to the referee without requiring a pitchside monitor check. Slow-motion replay is reserved for establishing facts such as a player's position; for judging the intensity of a physical offence, the protocol specifically calls for normal-speed footage instead, because slow motion can make routine contact look more violent than it was.

That asymmetry — slow motion for positions, real time for intensity — is a direct answer to one of the most common complaints about video review: that it makes borderline fouls look worse than they are. Applied correctly, it should not do that to a foul, even though offside itself is judged in the frozen, measurable moment the replay is built to show.

Why does the referee, not the VAR, always have the final word?

Law 5 gives the on-field referee "full authority to enforce the Laws of the Game," and that authority does not transfer to the video assistant referee even during a review. The VAR's job is to check for a clear and obvious error and communicate a finding; the referee then decides whether to conduct an on-field review at the pitchside monitor or accept the VAR's information and restart play — but "the referee will make the final decision" in either case. Technology assists the call; it does not replace the person making it. That structure also explains the sharp cutoff once play has restarted: after the game resumes, review is limited to cases of mistaken identity or the most serious off-the-ball offences, because reopening a settled decision undermines the same authority the law is built to protect.

Frequently asked questions

• Can the VAR rule on an offside call without the referee checking a pitchside monitor? Yes. Offside position is treated as a factual, measurable question, and the protocol describes a "VAR-only review" as usually appropriate for that kind of call, letting the finding be relayed without an on-field monitor check.
• Does the VAR review every goal for a possible offside? Yes. The protocol requires an automatic check of the television footage for every potential or actual goal, along with every penalty decision and direct red card, and offside is part of that automatic check.
• Can the referee overrule what the VAR finds? Yes, in principle. Law 5 states plainly that the referee makes the final decision; the VAR's role is to assist that judgment with video evidence, not to substitute its own authority for the referee's on the pitch.
• Is a player ever exempt from being flagged offside? Yes, in three specific cases. The Laws of the Game exclude a player from an offside offence when they receive the ball directly from a goal kick, a throw-in, or a corner kick, whatever their position when the ball is delivered.

For a related football perspective, read How semi-automated offside technology settles the tightest offside calls.