Isco scored a hat-trick as Spain warmed up for the 2018 World Cup by crushing 2014 finalists Argentina in Madrid.
Spain raced into a 2-0 lead when Diego Costa stabbed past Sergio Romero before Isco side-footed his first goal.
Argentina, without injured forward Lionel Messi, pulled it back to 2-1 through Nicolas Otamendi’s header.
Isco and Thiago Alcantara extended the lead to 4-1, with substitute Iago Aspas adding the fifth before Isco completed his hat-trick.
Spain, the 2010 World Cup winners, are now unbeaten in 18 games since Julen Lopetegui took charge following their exit at the first knockout stage of Euro 2016.
They have two more friendlies, against Switzerland and Tunisia, before they launch their World Cup group campaign against European champions Portugal on 15 June.