What VAR actually is
The Video Assistant Referee system is a team of off-field officials watching the match on video feeds, with the power to alert the on-field referee to a small, specific set of situations they may have gotten wrong. VAR does not review every decision in a match — it exists to catch clear mistakes in a narrow list of match-changing moments, not to relitigate every close call.
The four things VAR can review
VAR is limited, by design, to four categories: goals and whether anything in the build-up should have disallowed them, penalty decisions, direct red card incidents, and cases of mistaken identity when a card is shown to the wrong player. Everything else in a match — most fouls, most yellow cards, most throw-ins and free-kick decisions — stays entirely with the on-field officials, with no VAR involvement at all.
"Clear and obvious error" is the standard
VAR is not meant to overturn a decision simply because the video review team would have called it differently. The threshold is a clear and obvious error — the on-field referee has to have plainly got it wrong, not just made a defensible call that a review team slightly disagrees with. This is why some contentious decisions on television replays still stand after VAR review: if reasonable officials could see it either way, the on-field call is protected.
How a review actually happens
The video assistant referee, watching from a separate review room, flags a possible error to the on-field referee through an earpiece. For the four reviewable categories, the referee can either accept the VAR team's recommendation directly or go to a pitchside monitor to review the incident personally before making a final call. The on-field referee always makes the final decision — VAR advises, it does not overrule.
Why tournaments lean on it more visibly
At major tournaments like the World Cup, VAR reviews tend to draw more attention because every match carries higher stakes and a global audience watching the same replay angles in real time. The system itself does not change between league football and a tournament — what changes is how closely every decision gets scrutinised when a single mistake can end a team's run.
More football explainers
For how these fine margins played into the biggest match of the year, see our recap of Spain's win over Argentina in the World Cup final. More like this in our Sports section.
