Swiss midfielder Gelson Fernandes believes Spain remain on course to become the greatest side in history.
The Spaniards have swept all before them over recent years, with their success taking them to the European Championship crown in 2008.
Vicente del Bosque's side are now strong favourites to add the World Cup to their roll of honour, with few weaknesses to be found in their squad.
Switzerland are about to find out just how good they are, as they are set to meet Spain in their opening Group H encounter on Wednesday.
Fernandes is likely to be among those selected by Ottmar Hitzfeld to lead the Swiss resistance, but acknowledges that he will be up against the best in the business.
"They look as though they are going to be the best team of all time - they play like Barcelona," said the 23-year-old midfielder.
"I have rarely seen such dominance in collective play.
"You can see they all fit together well as a unit on the pitch and it's really great to see, it will be magnificent to play against them.
"They are the favourites as they are very strong tactically and technically.
"We will have to put them under pressure high up the field."
While pessimistic regarding Switzerland's chances against the all-conquering Spanish, Fernandes admits that 'everything is possible' and has not completely ruled out the prospect of springing an upset.
Hitzfeld's men are also set to face Chile and Honduras in the group stages and have ambitions of at least matching their second round exit at the 2006 World Cup in Germany.