Despite the goal Argentina needs to put more pressure to get a second a goal in the 2nd half of the game in order to secure the game, hence what happened to them during the Saudis match might repeat again and in this stage right now, there's no next opportunity to correct the mistake because this is knock out stage.
At the moment, it seems that Lionel Messi is the difference between the two teams. If Argentina can score another goal, it will be all over for the Australians. Australia has to attack more but at the same time it will open doors for Argentina to counter attack.
Argentina should move into the quarterfinals unless Australia finds a goal from somewhere.
Arginine is through of Knockout stage.
Australia should play - they are scared of the Argentine team
And just as I was typing this post, Australia almost conceded another goal from Messi.. What a play from Messi today.