Spain's World Cup-winning squad returned to Madrid for an open-top bus parade after defeating Argentina in the final in New Jersey.
Meanwhile, FIFA launched a disciplinary investigation into chaotic post-match altercations involving Argentine players and coaches.
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According to FIFA reports cited by The Independent, governing officials will analyze referee accounts and video footage to determine potential sanctions following violent confrontations after the final whistle.
Key incidents included a red card for Argentina midfielder Leandro Paredes for violent conduct against Eric Garcia, a punch thrown by Nahuel Molina toward Rodri, and a confrontation between assistant coach Roberto Ayala and Dani Olmo.
Reports also indicated that Paredes played through a cracked rib during Argentina's final three tournament matches.
He experienced breathing difficulties on several days, though the injury remained undisclosed to prevent opposing teams from targeting him.
Spain's Defensive Record
Statistically, head coach Luis de la Fuente's squad established a new historical benchmark for defending during their championship run.
Spain recorded the lowest expected goals conceded per game in World Cup history at 0.29, surpassing Brazil's 1994 record of 0.51 and France's 1998 mark of 0.63.
Following the victory, Inaki Williams shared a public message dedicated to his brother and teammate Nico Williams on social media.
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"Brother, You've won the World Cup. You've made history.
But beyond the trophy, thank you for this: you've made millions of immigrants like our parents feel proud that their future children might one day live what you've lived, and that millions of Spaniards empathize with our story, which isn't just ours but that of all the people who leave everything behind for a better future, because you've touched the sky with your fingertips and you've shown that with hard work and effort, anything is possible.
Today the world has come to know you even more, if that's possible, and you've put our last name in the stars, forever and ever.
I admire you. I love you.
World Champion," said Inaki Williams.
Upon landing, squad captain Rodri presented the World Cup trophy alongside head coach Luis de la Fuente before visiting King Felipe VI and his family.
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The open-top bus route began at the Arco de Moncloa, proceeding down historic streets including Calle de la Princesa, Calle de Genova, and Calle de Goya toward Cibeles Palace for a stage performance featuring artists such as Aitana, Saiko, and Lola Indigo.