A stunning second half performance saw Ante Redic, Luka Modric and Ivan Rakatic score for Croatia, which booked their place in the Round of 16.

"Playing for the team, the country and Croatians all around the world is the greatest pleasure. Of course there are things we can improve, but I think we were the better team and deserved to win. We must not lose our concentration now. We need to rest and move forward," Vrsaljko told journalists.

Croatia have earned maximum points from their opening two games and will play Iceland in their final group match.

Argentina were held to 1-1 draw by debutantes Iceland in their first match of the tournament. They will now face Nigeria in their third Group D game at the St. Petersburg Stadium on Tuesday.

The 2018 FIFA World Cup kicked off on June 14 and will continue until July 15, with the matches set to be played in 11 cities across Russia.