Barcelona became the first team in 85 years to win four straight Copa del Rey titles after blowing away Sevilla 5-0 in the final on Saturday.
Luis Suarez scored twice, and Lionel Messi, Andres Iniesta, and Philippe Coutinho also made the scoresheet for Barcelona's record-extending 30th Copa triumph, and sixth in the last decade.
Sevilla was trying to win a sixth Copa and save a season which will end without any trophies and maybe not even a place in the Europa League next season.
The final took place at Atletico Madrid's Wanda Metropolitano Stadium in the capital amid the ongoing political turmoil involving Catalonia's bid for independence.
There were jeers by part of the Barcelona crowd when the national anthem was played, but the boos were largely subdued by the reaction of the numerous Sevilla fans in the crowd. Spain's King Felipe VI smiled and saluted the fans after the anthem.
No other team had won four Copa titles in a row since Athletic Bilbao from 1930-33. The only other team to do it was Real Madrid from 1905-08.
Barcelona lost a chance to win the treble when it was eliminated by Roma in the quarterfinals of the Champions League, but it is three points away from winning the Spanish league.