Brighton had a goal incorrectly ruled out for offside because of a human error by the VAR operator in their Premier League draw at Crystal Palace.
VAR John Brooks intervened and ruled the Ecuador defender to be offside when he received Pascal Gross' pass.
However, the offside line was wrongly drawn from James Tomkins rather than his fellow Palace defender Marc Guehi, who was standing just behind him.
If the line had been drawn from Guehi, Brighton's left-back would have been onside and the goal would have stood.
At the end of last month Roberto de Zerbi's side were denied a penalty against Leicester City for a foul on striker Danny Welbeck which former top flight referee Dermot Gallagher said should have been given.