Barcelona reached the King's Cup final for a record fifth year in a row on Thursday with a 2-0 second leg win at Valencia in which Philippe Coutinho scored his first goal for the club as they secured a 3-0 aggregate semi-final success.
Valencia bossed the first half at a packed Mestalla as the hosts chased down a 1-0 deficit but their hopes of a comeback were dashed when Brazilian Coutinho slid in to turn home a cross from his old Liverpool team mate Luis Suarez in the 49th minute.
Coutinho, who joined Barca from Liverpool for a club record 142 million pounds ($197.66 million) in January, had been on the pitch less than three minutes when he scored, while Ivan Rakitic stretched the visitors' lead eight minutes from time.
Barcelona have won the trophy for the last three years and face Sevilla in the final on April 21, a re-run of the 2016 showpiece which the Catalans won 2-0 after extra time.
Sevilla beat Leganes 2-0 on Wednesday in the other semi-final to advance 3-1 on aggregate.
"I feel very happy to be able to play in a final while being at the club for only a couple of months," Coutinho told reporters. "We still have to play it and we've got a lot of things to do before the final.
"I have been trying to score since my first game and I'm happy to have done that, although the most important thing is that the team won the game and we are able to leave here happy.
"Everyone told me we could be the first team to reach five finals in a row, we all knew it and it's a great achievement."
Valencia were looking to reach the final for the first time in a decade and coach Marcelino deployed an attacking 4-3-3 formation which helped his side put Barca on the back foot in the early stages of the game.
Rodrigo Moreno came closest to scoring for the hosts when he crashed a header against the bar in the 13th minute and the Spain international was thwarted again later in the half by Barca goalkeeper Jasper Cillessen.
"We played a very good first half and we had some very good chances to score and level the tie, but when you're playing against these teams if you don’t score the chances you get you pay a price," said Valencia keeper Jaume Domenech.
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