Video Assistant Referee (VAR) â€śworked perfectlyâ€ť at all stadiums that hosted the first leg of the last-16 Champions League ties this week, according to UEFAâ€™s chief refereeing officer Roberto Rosetti. VAR was implemented for the first time in Europeâ€™s premier club competition and was called into action in games when tight offside and penalty decisions were involved.
â€śI am very happy with the way VAR was implemented,â€ť Rosetti said in a statement on the UEFA website. â€śThe technology worked perfectly, and the refereeing teams performed at a very high level.â€ť
The most talked-about decision involved VAR ruling out Ajaxâ€™s first-half opener against Real Madrid after it deemed Dusan Tadic to be offside when Nicolas Tagliafico headed the ball past Real goalkeeper Thibaut Courtois.
UEFA stood by the decision to chalk off the goal but questions were raised over the time it took to reach a verdict, with the restart delayed by nearly three minutes. Rosetti promised to look into improving the systemâ€™s efficiency.
Rosetti said VAR also reviewed but did not intervene in two other decisions which involved a Porto handball outside the box at AS Roma and a delayed offside call against Paris St Germain at Manchester United.