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Madrid's "Real" goalkeeper Iker Casillas celebrated the victory in the Spanish Cup competition. On Tuesday, Jose Mourinho's players won 2-0 at home against "Valencia".
"It was very important to keep a 'clean sheet' in the first match. 'Valencia' is a strong team and I am sure that the second leg will be very difficult.
"Today we played poorly, but we achieved a good result," said the veteran.
"The victory gave us confidence in our abilities and will help us forget how poorly we looked in the 'Primera' league," added Casillas."