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.
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.
