The Chile winger Mark González believes his side will be facing the most dangerous team in the World Cup on Friday when they take on Spain with both countries attempting to seal their place in the last 16.
Chile currently lead Group H with six points from two games, three ahead of Spain and Switzerland and well clear of Honduras, who prop up the standings having lost both fixtures so far.
However, nothing is yet decided in the pool with all four sides still having a chance of go through, depending on what happens in Friday's third and final round of group matches.
The Chileans look to be in a strong position but as they face the European champions, Spain, who bounced back from their shock loss to Switzerland with a 2-0 defeat of Honduras, the South Americans cannot be overconfident.
South Africa-born González, who once played in Spain for Real Betis, warned: "Spain are the most dangerous team in the World Cup. The fact that everyone has been surprised by their results in these two games doesn't mean they are not the same Spain as before.
"They are the same players. We know very well the quality and the individual ability they have, and they are perfectly capable of making life difficult for you.
"This game is going to be special, because they are playing for everything and I'm sure will have to come and attack from the start, but we will try and impose our style on the game as well.
"Our only objective is to win and qualify," added González, who scored his side's late winner against the Swiss.