Spain coach Jose Antonio Camacho demanded more of the same from his players after their 3-1 win over Slovenia.
Goals from Raul, Juan Carlos Valeron and Fernando Hierro, who wrapped up victory from the penalty spot, gave Spain a flying start in Group B.
And afterwards Camacho was highly satisfied with the Spanish performance.
He said: "Slovenia started better but we took over and passed the ball really well.
"It's very important to win your first game at a World Cup and, if we can carry on like this, we will be fine."