Fifa has defended the use of video assistant referees (VARs) in the Confederations Cup, saying the technology is ‘the future of football’.
The system has been used five times so far in Russia, causing confusion – at times – for spectators.
Fifa president Gianni Infantino said: “We have seen how video assistance has helped referees to make the correct decisions.
“I am extremely happy with VAR so far. This is a milestone tournament.”
Video assistance was introduced for the first time in a Fifa competition at the Club World Cup in Japan last December, and is being used in selected competitions.
England had their first experience of the technology last week when France defender Raphael Varane was sent off after a referral in their friendly match in Paris.