VIDEO: Dutch keepers discuss van Gaal's shootout substitution

Dutch goalkeepers Tim Krul and Jasper Cillessen reflect on Louis van Gaal's substitution in the Netherlands' quarter-final win over Costa Rica.

Louis van Gaal made perhaps the boldest move of the 2014 World Cup in the Netherlands' quarter-final victory over Costa Rica.

The Manchester United manager substituted goalkeeper Jasper Cillessen in the dying seconds of extra-time, and brought on Newcastle's Tim Krul for the decisive penalty shootout.

Van Gaal's risk paid off - Krul saving two of Costa Rica's five spot kicks to seal the Netherlands' place in the semi-finals.

Krul says he was aware before kick-off that he may be called upon if the game went to penalties, and he believes the substitution was a hugely important psychological move in the shootout.

"The manager and the goalie coach told me before the game that if we had another substitution left the possibility would be there that he would use me in the penalty shootout," Krul said.

"The whole game I was watching it in a different view because I knew the possibility could be there.

"I think it definitely had an impact. When I started my warm-up I think the whole bench was kind of confused at what was going on."

He added: "It's definitely one of those fantastic moves after all. It's easy talking afterwards now we have won but it definitely had a big impact.

"Obviously it's a way of trying to psych them out. They are under massive pressure, I was under massive pressure because I had to deliver as well so I used everything in my power to make it happen."

Ajax's Cillessen, who remains the Netherlands' first-choice goalkeeper, admitted he was disappointed not to be given the opportunity to be the nation's hero, but accepted his manager's decision.

"I didn't know about it before," he said. "The coach told Tim before, but not me so for me it was a big surprise.

"I wanted to play in everything and I also wanted to play in the penalty shootout. But the coach made a decision that Tim is better and I have to accept it."

A penalty shootout is as much about the mental side of the game as it is the technical, and van Gaal's substitution clearly shifted the balance in his side's favour. Facing an opponent who did not even expect to get out of the group stage, there was immense pressure on the Dutch to advance.

However, the prospect of facing a shootout specialist in Krul was enough to shake Costa Rica's confidence, and the Netherlands' penalty takers coolly dispatched of the Central Americans.

Van Gaal's side will now face Argentina in the semi-finals, in a rematch of the memorable quarter-final clash between the two nations at France 98.

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