The video assistant referee can only step in for a clear and obvious error, or a serious incident the referee missed, in four situations: goals and offences in the build-up, penalty decisions, direct red cards, and mistaken identity.
Monitor or no monitor
Factual calls, such as offside or whether the ball crossed a line, are usually corrected by the VAR directly. Judgement calls normally send the referee to the pitchside monitor to make the final decision.
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What’s off limits
Second yellow cards can’t be reviewed, and neither can most free kicks, throw-ins or corners unless they lead directly into one of the four reviewable situations.
