The Video Assistant Referee, or VAR, was introduced to football to help correct clear and obvious errors in key match-changing decisions, without turning every game into a series of lengthy stoppages. It doesn't replace the referee on the pitch — it supports them, using video replays to double-check a small number of specific situations.
What VAR actually checks
VAR is limited to four categories of decision: goals and whether there was an offence in the build-up, penalty decisions, direct red cards, and cases of mistaken identity when a card is shown to the wrong player. It isn't used to review every throw-in, foul or yellow card, which keeps its role focused rather than all-encompassing.
A team of officials watches the match from a separate video operation room, with access to multiple camera angles and replays. If they spot what looks like a clear and obvious error in one of those four categories, they alert the on-field referee, who can then either accept the VAR's recommendation or review the footage personally on a pitchside monitor before making the final call.
Offside and the review process
Offside decisions are checked slightly differently, since they're often about small margins rather than obvious errors. Video officials draw lines across the pitch based on the position of the attacker and the last defender at the moment the ball is played, to judge whether the attacker was ahead of the defensive line.
- The referee makes an initial decision on the pitch.
- The video team reviews the incident in the background as play continues.
- If a clear error is suspected, the referee is informed via headset.
- The referee either accepts the recommendation or checks the pitchside monitor themselves.
- Play restarts based on the final decision.
The system is designed to intervene only when something is clearly wrong, which is why some marginal or subjective calls still stand even after a review. The trade-off is a short delay in exchange for fewer major errors — a balance that continues to divide opinion among fans, but one that's fundamentally about getting the biggest decisions right rather than scrutinising every kick of the ball.
