Brazil struggling win against Costa Rica

This World Cup started with great result after making 5 goals by Russia against first debuted Saudi Arabia. 

But after the first match results are really unexpected as so-called countries have ended their game either with draw or lost. This happens with Argentina yesterday. 

Following this style Brazil completed its match after making a goal at first minute of injury time and Neymat added at the last minute of the injury time making 2-0 win against Costa Rica.