Brazil coach Luiz Felipe Scolari has claimed that the contribution of Fernandinho was crucial in their victory over Cameroon.
The Manchester City midfielder came on for Paulinho at half time during their 4-1 win, and Scolari suggested that his substitute helped La Selecao play better in advanced areas of the pitch.
He was quoted by BBC Sport as saying: "I think Fernandinho coming in was critical and we created a number of good chances in attack. Nature doesn't make leaps, things evolve step by step and this is what we are doing.
"If I could choose I would have picked someone else as Chile are a good South American team, they have quality, they are organised they have the will to succeed.
"I will look at things when all the adrenaline has left our bodies. Sometimes when we look at the match again in the cold light of day we see it in a different way."
Brazil will face Chile in Belo Horizonte on Saturday.