The Video Assistant Referee (VAR) will for the first time be used in the Premier League in the 2019/230 season, to help referees make decisions.
The aim of the technology is to help match officials to get more decisions correct, even though it does not promise 100% accuracy.
It will be tasked to check these four key decisions during matches.
The VAR will check every goal that is scored. If they spot any incident, then they will tell the referee not to restart play. This could be an offside or foul play during the build-up to the goal.
This applies to penalties that have either been awarded or those that have been denied. The referees watch the replays can ask the pitch referee to review his decision on those lines.
3. Red Cards
This only applies to direct red cards and not the second yellow cards. The VAR can tell if they missed a clear red card and also let the referee know if they have incorrectly given out a red card.
4. Mistaken Identity
The VAR can tell a referee if they have booked or sent off the wrong player and avoid cases where players are wrongly sent off or booked.
The VAR use in the Premier League will have a higher threshold compared to the rest of the leagues, with incidences set to be beamed to the big screens installed in the pitch.
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