Resolution criteria on PolyGram: This event is for the upcoming Brazil Serie B game, scheduled for Sunday, May 31, 2026 between Ceará SC and Operário Ferroviário EC.
PolyGram is an on-chain prediction market where you trade YES or NO outcome shares with real USDC on Polygon. For this market, buy YES if you believe the event will happen, or NO if you think it won't. Your maximum loss is your stake — winning shares pay $1.00 each at resolution. Unlike sportsbooks, there is no house edge: prices are set by supply and demand from other traders and reflect the crowd's real-time probability.
Market outcomes
| Ceará SC | 47% YES | 54% NO |
| Draw (Ceará SC vs. Operário Ferroviário EC) | 44% YES | 56% NO |
| Operário Ferroviário EC | 45% YES | 55% NO |
Ceará SC will face Operário Ferroviário EC in a Brazil Serie B fixture on Sunday, 31 May 2026. The current order book on Polymarket reflects a 47% implied probability for a YES outcome, suggesting near-parity in market expectations for the result. This probability is being formed by traders pricing in both teams' recent form, league position, and head-to-head record as the settlement window approaches.
Ceará SC competes as a traditional mid-table Serie B side with periodic promotion ambitions, whilst Operário Ferroviário EC operates as a smaller regional club with less consistent league performance. Historical matchups between these sides show competitive encounters without a dominant pattern; Ceará's superior infrastructure and squad depth have typically provided marginal advantage in direct meetings, though Operário has secured results at home. The 47% reading suggests the market is pricing meaningful uncertainty, consistent with how Serie B fixtures between clubs of differing resources typically settle.
Traders should monitor team news releases and official league communications through May for injury updates, suspension notices, or tactical changes announced by either club. Fixture congestion in the final weeks of the season may affect squad rotation decisions. Recent form data—particularly each side's performance in the fortnight preceding the match—will likely shift the order book materially as the settlement window closes. Any managerial changes or unexpected player departures would constitute material information affecting the probability.
This market settles from the official outcome published at https://www.cbf.com.br/futebol-brasileiro/competicoes/campeonato-brasileiro-serie-b. A proposer submits the final result to the UMA optimistic oracle on Polygon; the two-hour dispute window closes and payouts clear in USDC.
The mechanics for trading "Ceará SC vs. Operário Ferroviário EC" are the same as any other PolyGram sporting event contract. Each YES share resolves to $1 if the event happens, or $0 if it doesn't. The current price between 0¢ and 100¢ is the market's probability estimate, set live by the order book.
$0 in lifetime turnover and $2K of resting liquidity puts this market in the below the median by volume for sports contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
The market has been open for under a month — fresh enough that information asymmetry remains a real factor.
Higher-volume markets tend to have tighter spreads and faster price discovery — meaning the displayed YES/NO percentages are more likely to reflect the true crowd-implied probability rather than a single trader's directional view.
Resolution is sourced from https://www.cbf.com.br/futebol-brasileiro/competicoes/campeonato-brasileiro-serie-b. Settlement is executed by the UMA optimistic oracle on Polygon, with a 2-hour dispute window before payouts clear.
This prediction market is scheduled to close on 31 May 2026. After the resolving event occurs, settlement typically clears within 24 hours once the UMA optimistic oracle confirms the outcome. All payouts are in USDC on the Polygon network.
To trade on this prediction market, create a free PolyGram account at polygram.ink, deposit USDC via Polygon, and place a YES or NO order on the outcome you believe in. You can learn more on our how-it-works page. Your maximum loss is limited to your stake — there is no leverage or margin.
When the outcome is determined, winning YES shares pay out $1.00 each in USDC, while losing shares pay $0. Settlement is handled by the UMA optimistic oracle on Polygon — a proposer submits the result, a two-hour dispute window opens, and if uncontested, payouts are distributed automatically. You can withdraw your winnings to any Polygon wallet.
Prediction-market positions can lose 100% of staked capital. Outcomes are uncertain by definition — historical accuracy of crowd-implied probabilities is high in aggregate but not for any single market. PolyGram does not provide investment advice. Trade only with capital you can afford to lose.
Regulatory status varies by jurisdiction. Germany, the United States, and most EU countries treat Polymarket-style event contracts under one of three frameworks: financial derivative, gambling product, or unregulated novel asset. Consult local counsel before trading.
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