Video assistant referees are set to be introduced in the Premier League next season after the top-flight clubs agreed "in principle" to the move.
Technology was used at the 2018 World Cup finals and, following some initial teething problems, it was generally viewed to have been a success, while the system is in place in the top leagues in France, Germany and Italy.
Here Press Association Sport looks at five instances where VAR could have been used in the Premier League recently:
Chelsea v Everton – November 11
Antonio Rudiger was incensed after being booked following a clash with Bernard, who motioned his head towards defender, leading the German to go down before clutching his face and roll around. Rudiger, who was booked for his part in the incident, said: "I get booked for being head-butted. Sorry, but that's a joke. If there is VAR in England, then Bernard has a problem. He would be sent off."
Southampton v Watford – November 10
Reds boss Jurgen Klopp was left frustrated as he believed Sadio Mane wrongly had a goal disallowed at the Emirates Stadium. The Senegalese tapped in the rebound from Roberto Firmino's shot which had hit the post but was flagged for offside in a game which finished 1-1. Klopp said: "It's a pity that it didn't count, we made a few more mistakes than the ref, but it would have been nice if that goal counted."
Manchester United v Newcastle – October 6
Newcastle were daring to dream of securing a rare Old Trafford win after storming a 2-0 lead early on and it could have been better when Jonjo Shelvey's free-kick seemed to hit the outstretched arm of Ashley Young in the area before half-time. Referee Anthony Taylor was unmoved and United went on to dominate in the final 20 minutes, scoring three times to clinch a 3-2 win.