The tournament in Russia is the first World Cup where VAR is being used as a tool to help match officials avoid possible mistakes by allowing them to review video replays of game episodes.

“Of course the players are discussing it. Now penalties are sometimes called in cases were they weren't previously. It means that many [players] will complain less [to referees over their decisions],” Suarez told journalists at a press conference ahead of Uruguay’s game with Portugal.

The match, which is the first game of the round of 16, will take place in Sochi on Sunday (12am AEST).