Brazil saw off Cameroon to secure their place in the round of 16 at the World Cup and the hosts will go into their match against Chile high on confidence.
Brazil made it through Group A after beating Croatia and Cameroon and drawing with Mexico.
The Brazilians have only conceded two goals during the group stages and one of those was an own goal in the opening game.
There have been signs that Brazil haven't been playing to the best of their abilities as teams have picked up on some poor defensive errors, but in their game against Cameroon they showed why they are contenders to win the 2014 World Cup.
Brazil put four goals past Cameroon and it was clear to see how dangerous they are when going forward.
Brazilian striker Fred admitted the team have finally started to play like they did at the Confederations cup and they have definitely improved since the first group game.
Speaking to reporters, Fred said: "We finally got to play with the spirit that we were used seeing in our national team.
"We pressured our opponent the way we wanted from the beginning. In the last two matches we had tried but it didn't work. In the first match we were OK, then we did better in the second and now we improved even more."
Fred had been receiving a lot of criticism because before the Cameroon game he had failed to score and he is Brazil's main striker. However the 30 year old believes he was more worried about the team than his own performances.
"It wasn't bothering me that I wasn't scoring, but that the team wasn't playing so well. The entire team improved."
With the knockout stages being played at the weekend, Brazil manager Luis Felipe Scolari thinks his side has improved since the opening game and are ready for their match against Chile.
Scolari said: "We are almost at the level we think we need to be for the knockout stage.
"We began the group stage at an inferior level compared to how we played in the Confederations Cup. But we are becoming better day after day."
Chile could cause Brazil some problems as they are a very good counter attacking team and Brazil have struggled defensively this tournament and are prone to making mistakes.
Overall though Brazil should be able to beat their South American rivals to set up a match against potentially Colombia, Uruguay or Italy.
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