A mystery trader on Polymarket turned a $4 million position into $9 million following a surprising goalless draw between Cabo Verde and Spain during the FIFA World Cup. The outcome defied odds of 1:10, favoring Spain, and triggered significant payouts for underdog bettors on the prediction market platform.

The unexpected result not only created a major win for the anonymous trader but also led to substantial losses for others. Another trader lost nearly $1 million after betting on a Spanish victory. The event highlights the high-stakes nature of prediction markets, particularly during major sporting events.

Sources: https://www.coindesk.com/markets/2026/06/16/days-old-polymarket-account-scores-usd9-million-win-against-world-cup-favorite-spain