Resolution criteria on PolyGram: In the upcoming J1 100 Year Vision League game between Gamba Ōsaka and Sanfrecce Hiroshima, scheduled for May 10, 2026 at 2:00 AM ET: This market will resolve based on the final score of the Gamba Ōsaka vs. Sanfrecce Hiroshima match originally scheduled for May 10, 2026 at 2:00 AM ET, considering only the result at the end of 90 minutes of regulation plus stoppage time; extra time and penalty shoot-outs are excluded.
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
| Exact Score: 0-0 | 0% YES | 100% NO |
| Exact Score: 0-1 | 100% YES | 0% NO |
| Exact Score: 1-0 | 0% YES | 100% NO |
| Exact Score: 0-2 | 0% YES | 100% NO |
| Exact Score: 1-1 | 0% YES | 100% NO |
| Exact Score: 0-3 | 0% YES | 100% NO |
| Exact Score: 1-2 | 0% YES | 100% NO |
| Exact Score: 2-1 | 0% YES | 100% NO |
Gamba Ōsaka will face Sanfrecce Hiroshima in the J1 League on 10 May 2026, with settlement based on the final score after 90 minutes plus stoppage time. The 0% implied probability across Polymarket's order book reflects the inherent difficulty in pricing exact-score outcomes in football markets, where the combinatorial nature of possible results (typically 15–20 realistic scorelines per match) fragments liquidity across numerous outcomes. This pricing pattern is standard for exact-score markets; even heavily favoured results rarely exceed 8–12% probability individually, as traders distribute positions across multiple plausible scenarios rather than concentrating capital on any single scoreline.
Historical J1 League matches between these clubs provide limited recent precedent for calibration. Gamba Ōsaka and Sanfrecce Hiroshima occupy different competitive tiers within the league structure, with their respective form, injury status, and tactical setup in spring 2026 determining likely goal ranges. Traders should monitor team news releases and official J1 League communications through early May for squad availability, particularly any late withdrawals or suspensions that could shift expected output. Fixture congestion in the league calendar and weather conditions in Osaka on match day may also influence scoring patterns, though such factors typically emerge only in the final week before play.
This market settles from the official outcome published at https://www.jleague.jp/en/. 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 "Gamba Ōsaka vs. Sanfrecce Hiroshima - Exact Score" 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.
$69 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 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.jleague.jp/en/. 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 10 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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