Resolution criteria on PolyGram: More markets for the Brazil Série A game, scheduled for May 31 at 3:00 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
| O/U 2.5 | 54% YES | 47% NO |
| O/U 3.5 | 48% YES | 53% NO |
| CA Mineiro (-1.5) | 40% YES | 61% NO |
| CR Vasco da Gama (-2.5) | 39% YES | 62% NO |
| CA Mineiro (-2.5) | 41% YES | 59% NO |
| O/U 0.5 | 61% YES | 40% NO |
| O/U 1.5 | 53% YES | 47% NO |
| O/U 4.5 | 41% YES | 59% NO |
CR Vasco da Gama will face CA Mineiro in a Brazil Série A fixture on 31 May 2026, with kick-off scheduled for 3:00 PM ET. The market currently reflects a 53% implied probability for "more markets" — additional betting options beyond the standard match outcome — becoming available before the settlement window closes on 31 May at 19:00 UTC. This probability is being formed by order book activity on Polymarket, where traders are pricing the likelihood that supplementary markets (such as goal scorer, card, or corner markets) will be listed for this fixture.
Vasco da Gama and Mineiro are established Série A clubs with regular fixture coverage. Historical precedent suggests that matches involving top-flight Brazilian sides attract expanded market offerings, particularly when fixtures fall within major tournament windows or receive broadcast prominence. The current 53% probability sits near the midpoint, indicating genuine uncertainty among traders about whether Polymarket's market operators will deploy additional betting products for this specific match, rather than confidence tilting decisively either direction.
Traders should monitor Polymarket's market creation announcements and the fixture's broadcast schedule in the weeks preceding 31 May. Fixture postponements, scheduling changes, or shifts in Série A's competitive calendar could influence whether operators prioritise additional markets for this match. The settlement window allows roughly five weeks from now for such decisions to crystallise, making near-term league announcements and operator activity the primary catalysts affecting probability movement.
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 "CR Vasco da Gama vs. CA Mineiro - 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 $4K 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 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.
Explore more prediction market odds and trading opportunities on PolyGram: