Real Madrid boss Jose Mourinho believes they've dealt Barcelona a psychological blow with their Copa del Rey triumph.
It is Mourinho's first trophy to be won in Spain.
"I am thrilled to win the Copa del Rey - it is something special," Mourinho said after the game.
"It's a fantastic triumph against a great team like Barcelona - and we deserved it."
Mourinho's men were humbled by Barca in his first Clasico, a 5-0 drubbing at the Nou Camp in late December.
But a 1-1 draw at home to the Catalans in the Primera Division renewed optimism and Mourinho believes this triumph shows his team can match the Spanish champions.
"We can take them on over two games; we have just done that," he said.
"There is no reason we can't beat them in the Champions League because we have just drawn once against them and then beaten them."
And the former Chelsea and Inter Milan coach says the Copa del Rey is just the beginning for this Madrid side.
"I came here to do a job and change the mentality of the club," he said.
"We have started to do that and it's satisfying - but it's just the start."
