Soccer is the biggest sport on Polymarket by a mile. Between the 2026 World Cup and the European club season, it dominates the wins and losses leaderboards more than any other category. It also has a market that no other sport does, the draw, which creates a kind of edge you cannot find in basketball or baseball. Here are the biggest soccer whale bets on record and the lessons hiding in them. Figures are paper PnL held to resolution.

The biggest soccer wins

• $1.1M on the USA to win, June 12. A $920K position at 46 cents on the United States that paid about $1.1 million, the single biggest win on the entire board, across all sports.
• $823.1K fading Iran. A $790.8K bet on No, that Iran would not win on June 15, at 49 cents.
• $794.4K on the Spain upset. The famous one: $78.6K on No for Spain at 9 cents, when Cabo Verde shocked the heavy favorite. Roughly an 11x.
• $529.7K on Morocco at 37 cents, and $420.1K on Canada from a $1.3M stake at 76 cents.
• $374.7K and $365.3K on a Brazil vs Morocco draw at 26 cents, two separate whales on the same clever call.

The biggest soccer losses

Soccer also owns the losses board, and the pattern is the mirror image.

• $712.4K betting against Morocco, the single biggest loss on record, when Morocco won anyway.
• $447.5K on Iran to win, $400.2K on Germany (upset by Ecuador), and a wall of losses on Belgium believers who stacked $178K to $296K each on Belgium and watched it not come in.
• Club soccer chipped in too: $412.9K on an Arsenal spread, $350.8K on Manchester City, $330.1K on Juventus, all favorites at size that fell.

The draw: soccer's unique trade

Here is what makes soccer different from every other sport on the platform. A soccer match can end in a draw, so there is a third outcome, and Polymarket lists a specific market for it. That draw market is one of the sharpest edges on the board.

The two Brazil vs Morocco draw tickets are the proof: whales bought the draw at 26 cents, a price the market underrated, and collected over $370K each when the game ended level. A draw is systematically under-bet by casual traders, who instinctively pick a winner, which regularly leaves the draw priced too cheap in evenly matched games. No basketball, baseball, or tennis market gives you that option, and the whales who specialize in it have found a genuine recurring edge.

The knockout-stage favorite trap

The World Cup also exposes the most expensive soccer habit: laying big money on favorites in one-off knockout games. A group-stage giant like Spain or a knockout favorite like Morocco can go down in ninety minutes, and when they do at size, the whole stake is gone. The Spain upset alone printed over two million dollars for the faders and torched the favorite-backers. Soccer is low-scoring and high-variance, so a single goal decides matches, which makes heavy favorites at big prices genuinely dangerous.

The pattern, one more time

Across all of it, the same rule holds. The biggest soccer wins came from contested and underdog prices, the Spain fade at 9 cents, the draw at 26 cents, the USA at 46 cents. The biggest soccer losses came from favorites at size, betting against Morocco, backing Belgium, laying Arsenal and Man City. In the sport with the most volume and the most variance on the platform, being on the cheap side of the book and being right is where the money is.

The part that matters for you

Every one of these bets was public the moment it printed, often hours before kickoff. You could watch $78.6K land on a 9-cent Spain fade, or see the money pile onto a Morocco favorite about to lose. The edge is in seeing that flow live, especially the sharp draw and underdog money, and knowing which accounts have a real soccer record.

That is what Rivo does. It watches every whale-sized trade across Polymarket and Kalshi, including the soccer markets, ranks each wallet by resolved profit and loss, and pushes the sharp entries to your phone before the line moves. Free to try at rivo.markets.