A Mysterious Polymarket Trader Walked Away With $1.35 Million in Hours After One Bold World Cup Wager—and It’s Raising Eyebrows

A newbie on Polymarket netted over $1 million in just a few hours on Sunday by betting on Spain to win the FIFA World Cup.

Suspicious ‘Yamal’ Account Emerges

Operating under the pseudonym “yamal19,” the punter began purchasing “Yes” shares on Polygon (CRYPTO: POL)-based Polymarket when the odds were about 59%. They ended up tossing $1.95 million into the bet.

Curiously, there is no record of this trader placing bets on any other Polymarket contract, sports or non-sports.

When Spain beat Argentina to lift the trophy at New Jersey Stadium, the trader landed a big pay‑off. They closed out the whole position and walked away with $1.35 million — a 69% return.

Polymarket didn’t immediately respond to Benzinga’s request for comment.

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Perfectly Normal Or…?

This pattern of trades on Polymarket is not new to observers. Mysterious accounts appeared overnight, placing bets on highly specific outcomes, including President Donald Trump’s bid to acquire Greenland and a U.S. military operation in Venezuela.

In fact, a U.S. soldier was charged earlier this year for allegedly using classified information to profit on a Polymarket bet linked to Venezuela’s ousted leader, Nicolás Maduro.

The prediction market has strengthened its market integrity rules to fight insider trading and routinely reports suspicious traders to the authorities.

Notably, Polymarket founder Shayne Coplan has waved off the idea that prediction markets could corrupt sports, dismissing in May fears of game-fixing and insider trading as "outlandish and baseless."

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