Defending champions Argentina are just one win away from another FIFA World Cup title—but as Lionel Messi's side prepares to face Spain in Sunday's final, an old football legend has returned to haunt the conversation.Argentina fought back to beat England 2-1 and book a place in the FIFA World Cup 2026 final in East Rutherford, New Jersey. Victory over Spain would hand La Albiceleste a fourth World Cup crown.But their march to another final has also revived one of football's strangest tales—the mysterious "Curse of Tilcara."What is the Curse of Tilcara?According to Argentine football folklore, the 1986 World Cup squad visited the town of Tilcara before travelling to Mexico. There, players are said to have prayed at the shrine of the Virgin of Copacabana and promised they would return if they lifted the trophy.They did exactly that, with Diego Maradona inspiring Argentina to World Cup glory.But the legend claims the team never returned to fulfil its vow.Many fans believe that broken promise unleashed the "Curse of Tilcara," condemning Argentina to decades of heartbreak on football's biggest stage.Did the curse really strike?Believers point to Argentina's painful defeats in the 1990 and 2014 FIFA World Cup finals, along with several Copa América final losses, as evidence that the curse was real.Then came another twist.A viral post on X claims some members of the legendary 1986 squad finally returned to Tilcara in 2018 to seek forgiveness.What happened next only added fuel to the myth.Argentina won the 2021 Copa América, the 2022 Finalissima, the 2022 FIFA World Cup, and the 2024 Copa América, leading fans to joke that the curse had finally been lifted.Viral theory sparks debateThe story exploded online, with football fans sharing similar sporting superstitions from around the world.One user even compared it to India's T20 World Cup-winning cricketers visiting a Hanuman temple before and after their triumph.Not everyone was convinced, though.Several users pointed out that Argentina actually won the **1991** and **1993 Copa América**, meaning the country did not go trophyless after the 1986 World Cup.What did Grok say?As the debate intensified, one user asked Grok to fact-check the viral claim.The AI chatbot described the Curse of Tilcara as a famous piece of Argentine football folklore with some historical basis, but warned that it should not be treated as proven history.According to Grok, Argentina did train in Tilcara before the 1986 World Cup to prepare for Mexico's altitude, and local accounts suggest some players visited the shrine of the Virgin of Copacabana.However, then coach Carlos Bilardo reportedly denied that the squad ever made a formal promise or mystical pact.Grok also noted that although a few members of the 1986 squad made a symbolic visit to Tilcara in 2018, there is no evidence linking that visit to Argentina's remarkable run of trophies.Can Argentina end the legend once and for all?Fact or folklore, the Curse of Tilcara has become one of football's most fascinating myths.Now, with Argentina standing just one victory away from another FIFA World Cup title, fans are once again asking the same question:Was there ever a curse at all—or has Argentina finally buried it forever?