Wesley Sneijder admits Holland's win over Denmark was far from faultless but he also believes that he and his team-mates provided evidence of their World Cup potential.
Bert van Marwijk's side opened their Group E campaign with a 2-0 victory on Monday as an own goal from Daniel Agger and a tap-in from Dirk Kuyt wrapped up the points.
Holland did not dazzle in Johannesburg, however, the two-time World Cup finalists got the job done and they are now preparing for Saturday's meeting with Japan in Durban.
Sneijder admits there is room for improvement but he was pleased with his country's strength in depth as Eljero Elia impressed from the bench, while Arjen Robben and Klaas-Jan Huntelaar remained unused substitutes.
"Of course we didn't play that well, but we won, 2-0," Sneijder said. "I think the win is the most important thing.
"Let's not forget that these Danes in the first half did an excellent job because they studied us very thoroughly.
"But we improved a lot in the second half and got the result. So we are satisfied."
He added: "I think in the second half we did very well, by running, beating players and showing our creativity.
"Also on the bench we have some fantastic players, who can come in and really make the difference.
"They have creativity and good ability. At some point in the second half, we saw that.
"We had a player that came on and made a difference."