Resolution criteria on PolyGram: This event is for the upcoming Brazil Serie B game, scheduled for Sunday, May 3, 2026 between Operário Ferroviário EC and Londrina 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
| Operário Ferroviário EC | 100% YES | 0% NO |
| Draw (Operário Ferroviário EC vs. Londrina EC) | 0% YES | 100% NO |
| Londrina EC | 0% YES | 100% NO |
Operário Ferroviário EC will face Londrina EC in a Brazil Serie B fixture on Sunday, 3 May 2026. The current order book on Polymarket reflects a 100% implied probability, indicating that traders are pricing this match as a certainty to occur as scheduled. This extreme probability typically emerges when settlement conditions are straightforward and no material uncertainty exists about fixture confirmation.
Brazil Serie B matches rarely face cancellation once officially scheduled, particularly when both clubs are operationally stable. Operário Ferroviário, based in Ponta Grossa, and Londrina, from Paraná state, are established second-tier sides with consistent fixture records. Historical precedent suggests that Serie B games proceed as scheduled unless extraordinary circumstances—severe weather, administrative sanctions, or security concerns—intervene. The proximity of the settlement window to the actual match date (ending 19:00 UTC on match day) leaves minimal room for late-stage disruptions to alter the outcome.
Traders should monitor official CBF (Confederação Brasileira de Futebol) communications and club announcements for any fixture rescheduling, which would be the primary catalyst affecting settlement. Injury crises or administrative issues affecting either club's ability to field a team remain low-probability events but warrant attention. Stadium availability and local regulatory clearances are standard pre-match checks; any announcement of venue changes or postponement would materially shift the probability away from certainty before the settlement window closes.
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 "Operário Ferroviário EC vs. Londrina 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.
$690 in lifetime turnover and $0 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 around 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 3 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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