2018–19 UEFA Champions League
The 2018–19 UEFA Champions League was the 64th season of Europe's premier club football tournament organised by UEFA, and the 27th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League. For the first time, the video assistant referee (VAR) system was used in the competition from the round of 16 onward.
The Metropolitano Stadium in Madrid hosted the final
The video assistant referee (VAR) is a match official in association football who assists the referee by reviewing decisions using video footage and providing advice to the referee based on those reviews.
VAR monitor at the Estadio Monumental David Arellano
A VAR decision during an FA Cup match at the Etihad Stadium, Manchester.
A Major League Soccer referee reviewing a play using a sideline monitor
Assistant video assistant referees in action during a Saudi Professional League match