The use and absence of VAR (Video Assistant Referee ... by the on-field referee, either based on information provided by VAR, or after the referee has carried out a review of the incident ...

Currently making waves throughout European football, VAR - or Video Assistant Referee ... Cologne and can quickly review incidents that occur in order to help the referee on the pitch.

Video Assistant Referee causes controversy ... to be shown a red card against Chelsea when referee Rob Jones was sent to the pitchside monitor to review possible violent conduct on Marc Cucurella.

German soccer referees will start making NFL-style announcements to the crowd to explain video review rulings.