When Spain and Argentina walk out at MetLife Stadium on Sunday, the touchline will stage a reunion almost a decade in the making. Luis de la Fuente and Lionel Scaloni, the two men who have guided their nations to the 2026 World Cup final, first met in a classroom in 2017, when the Spaniard taught the Argentine on a UEFA Pro licence course at the Spanish federation’s Las Rozas headquarters. Spain reached the final by defeating France 2-0, while Argentina needed a late comeback to edge England 2-1. Neither coach had ever managed a club in a top division before taking charge of a senior national team, a break with convention that Spanish and Argentine media have seized upon as evidence of a shifting paradigm in football leadership.

De la Fuente, then coach of Spain’s under-19s, was responsible for the technical module of the course, and Scaloni finished among the top five candidates. The relationship that began there has since deepened into a mutual admiration frequently aired in public. “Besides having been my teacher on the coaching course, I have a particular relationship with him,” Scaloni told reporters before the semi-final. De la Fuente, for his part, has repeatedly stressed that managing people matters more than tactics. “The most important thing is to manage a group; to manage people,” he has said, a philosophy that Argentine outlets note Scaloni has embodied by forging a squad in which even substitutes feel integral. Brazilian coverage highlights the rarity of two World Cup finalists who bypassed the club game entirely, while Indonesian press frames the match as a literal duel of guru versus murid.

In his pre-final press conference, De la Fuente offered a vivid illustration of the challenge his team faces. He recalled a youth Copa del Rey match during his time at Sevilla, when he assigned a man-marker to a teenage Lionel Messi. With the score 0-0 after 70 minutes, the marker was booked and substituted; Messi then scored four goals in 15 minutes. “So no, we won’t man-mark him,” De la Fuente said, though he stressed that Spain would remain vigilant. He described Argentina as “a spectacular team” and dismissed suggestions that the world champions play dirty, calling such talk unthinkable. Yet he also applied subtle pressure on the match officials, stating that the referee “cannot act with permissiveness.” Spanish media interpreted the remark as a pointed message ahead of a contest both sides expect to be decided by fine margins.

The stakes are historic. Argentina are attempting to become the first nation to retain the World Cup since Brazil in 1962, while Spain seek a second title to add to their 2010 triumph. The final will be played in New York, a neutral venue that underscores the globalised nature of the modern game. For De la Fuente and Scaloni, the outcome will not alter a friendship built on shared ideas and a common rejection of the traditional coaching ladder. But for 90 minutes, the pupil will try to surpass the teacher, and the teacher will aim to show that the lesson is not yet over.