A Polymarket trader earned $4.7 million from the sensational draw between Spain and Cape Verde.
A user of the decentralized prediction platform Polymarket, under the pseudonym fishalive, pulled off one of the most notable trades in the history of the prediction market. Risking approximately $427,000, he received a payout of over $4.7 million. The reason for such a substantial win was the unexpected result of a 2026 FIFA World Cup group stage match between the national teams of Spain and Cape Verde.
The bet was placed on Spain not winning. Initially, bookmakers estimated the probability of this outcome at just 9%, considering the match a routine one for "La Roja." However, the game, held on June 15, 2026, at the Mercedes-Benz Stadium in Atlanta, ended in a goalless draw — 0:0. This result came as a shock to both football fans and participants in the prediction market.
Prediction Market: When Analysis Meets Luck
Polymarket is the largest decentralized prediction platform, where users buy "yes" or "no" shares on various global events. In this case, fishalive chose the "no" option against a Spain victory. Notably, before the game started, bookmakers estimated the probability of this outcome at just 9%. Spain, placed in Group H due to the tournament's expansion to 48 participants, was considered the absolute favorite. Their opponent, the modest debutant from Cape Verde, was not seen as a serious threat. However, the game completely shattered expectations — the European team failed to capitalize on its advantage and left the field without scoring a goal.
This trade became one of the largest single transactions in Polymarket's history. It vividly demonstrates how volatile and unpredictable the prediction market can be, especially in sports events where favorites do not always live up to their status.
Expert opinion: This case is a brilliant example of how deep analysis and a willingness to go against the crowd can yield super profits. However, one should not forget that such bets are, in essence, a lottery with high variance. The sports prediction market is extremely sensitive to upsets, and relying on such outcomes as a strategy is a sure path to losing capital. This is an exception, not a rule.