Resolution criteria on PolyGram: More markets for the Brazil Série A game, scheduled for May 23 at 6:00 PM ET.
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
| Grêmio FBPA (-1.5) | 40% YES | 60% NO |
| Grêmio FBPA (-2.5) | 39% YES | 62% NO |
| Both Teams to Score | 51% YES | 49% NO |
| Santos FC (-1.5) | 32% YES | 69% NO |
| Santos FC (-2.5) | 28% YES | 73% NO |
| O/U 1.5 | 53% YES | 47% NO |
| O/U 2.5 | 53% YES | 47% NO |
| O/U 3.5 | 48% YES | 53% NO |
Grêmio and Santos will meet in Brazil's top division on 23 May at 6:00 PM ET. The current order book on Polymarket reflects a 42% probability for the "More Markets" outcome, suggesting traders are pricing in moderate uncertainty around additional betting opportunities or market expansion for this fixture. This probability has formed through active trading across the platform's liquidity pools, with the spread between bid and ask orders indicating how confident participants are in further market development.
Historical precedent shows that Série A fixtures between established clubs typically attract expanded market offerings, particularly when both teams carry significant supporter bases and commercial interest. Grêmio and Santos are among Brazil's most traditional clubs, with substantial followings that drive demand for derivative betting products. Previous matchdays have seen comparable fixtures generate multiple secondary markets covering player performance, corner counts, and card totals within hours of initial settlement markets opening.
Traders should monitor official Série A scheduling confirmations and any last-minute venue changes, which occasionally trigger market fragmentation or consolidation. Team news regarding injury updates or suspension status typically emerges 48–72 hours before kickoff and can influence whether additional niche markets become viable. CBF announcements regarding broadcast arrangements may also affect market proliferation, as wider media coverage generally correlates with deeper market creation across prediction platforms.
This market settles from the official outcome published at https://www.cbf.com.br/futebol-brasileiro/competicoes/campeonato-brasileiro-serie-a. 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 "Grêmio FBPA vs. Santos FC - More Markets" 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 $3K 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-a. 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 23 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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