Ruud van Nistelrooy and Robinho were Real's goal scorers, but it was Casillas who was the host's hero with an outstanding display and led to Schuster declaring: "He is the best keeper in the world.
"When you talk about the Player of the Year awards, it is always the attackers who are favoured. It's unfortunate that a player of Casillas' ability isn't recognised, but we should just be happy that he is a Real Madrid player."
Zaragoza striker Diego Milito summed up the feeling inside the visitors' dressing room: "Sometimes it is difficult to beat Casillas and today was one of those days. He is a great goalkeeper, one of the best in the world and we could not find a way past him."