Former England striker Alan Shearer was among those to criticise the World Cup's VAR system after the technology played a starring role in second-half drama as Portugal's draw against Iran.
The Video Assistant Referee (VAR) was consulted on numerous occasions in the 1-1 tie, most notably in the decision to award a penalty that Cristiano Ronaldo subsequently missed .
As a result, the game was subject to numerous interruptions as referee Enrique Caceres frequently requested VAR on his calls, which resulted in fragmented play and constant confusion.
Shearer was not amused by the stunted action and used colourful language to express his views on the technology that has got everyone talking in Russia afterwards on social media.