Video Assistant Referee would be use to overturn refereeing decisions for the first in England in the FA Cup game between Brighton and Crystal Palace.
The English FA had longed announce their decision to use video technology in the FA Cup this season, and initially considered using it in the Liverpool vs Everton tie. But the Merseyside derby was deemed too high profile for the trial to take place.
The FA made the announcements in March, and would be used first in the FA Cup third round tie between 5th and 8th January, and it would be used only in the Televised games played on Premier League grounds.
The International Football Association Board has laid down protocol under which a match changing decision can be overturned through video review. per the protocol, only cases of “direct red cards, penalty or no penalty, awarding goals, and when the identity of a culprit is mistaken can necessitate a decision to be overturned.
The reason why the trial is being restricted to only televised games in Premier League grounds, is because they have the necessary infrastructure to aid the administration of the technology.
Liverpool vs. Everton, and Brighton vs Palace are the only two games that meet this criteria.