"We can't afford to get stage fright", he said ahead of the Group C tie against the Socceroos.
Furthermore, the first penalty scored in the World Cup 2018 was by Ronaldo, and the first penalty missed was by Messi.
"They (Argentina) have quality but this win will boost our confidence and I hope we can play well against them", Modric, who excelled in his role as a playmaker, told reporters, adding, "it is going to be a hard match".
"That's just another statistic, it's part of the past", Argentina coach Jorge Sampaoli said of Messi's latest miscue.
Except Iceland is a different proposition these days, and no longer the also-ran it used to be. Instead, they've just created more.
After Iceland qualified for Euro 2016, he became the first and the only Iceland goalkeeper to represent his nation at a major tournament. Because we could have sold much more in Iceland.
Javier Mascherano, 34, playing in his fourth World Cup, said that "we have to keep going, this is just beginning and we can not fall apart".
"A few players playing in the team could be playing at a higher level".
But they only qualified for Russian Federation thanks to a win in their final qualifier against Ecuador and scored 19 goals in 18 games, the lowest by any South American qualifier since the single-group format was adopted in the mid-1990s.
"They played against him and [former Real Madrid coach Zinedine] Zidane was prepared for such things", Dalic said.
Gudmundsson is a wide midfielder and set-piece specialist who plays in the Premier League with Burnley.
Iceland stunned the stadium soon afterwards though when keeper Willy Caballero palmed Gylfi Sigurdsson's low shot straight into the path of Finnbogason, who swept the ball into the unguarded net.
Argentina and Croatia meet Thursday in World Cup soccer action at Nizhny Novgorod Stadium. This was the start of a stretch of three straight World Cup matches with a goal for Messi that was continued in a 1-0 victory over Iran in which he scored the lone goal in the first minute of stoppage time in the second half.
Icelandic keeper Hannes Halldorsson made a name of himself as a talented film director before he turned a professional football player at the age of 29 in 2014.
"It gives you goose bumps when you hear it, " Gudmundsson said of the "thunderclap". We are going to have to be at our very best, in every way.