Video Assistant Referee causes controversy every week in the Premier League, but how are decisions made, and are they correct?
After each weekend we take a look at the major incidents, to examine and explain the process both in terms of VAR protocol and the Laws of the Game.
In this week's VAR Review: Should Manchester United defender Lisandro Martínez have been sent off for his challenge on Chelsea's Cole Palmer? Why was Crystal Palace's stoppage-time winner at Wolverhampton Wanderers disallowed?