Resolution criteria on PolyGram: This event is for the upcoming J1 100 Year Vision League game, scheduled for Sunday, May 10, 2026 between Gamba Ōsaka and Sanfrecce Hiroshima.
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
| Gamba Ōsaka | 0% YES | 100% NO |
| Draw (Gamba Ōsaka vs. Sanfrecce Hiroshima) | 0% YES | 100% NO |
| Sanfrecce Hiroshima | 100% YES | 0% NO |
Gamba Ōsaka will host Sanfrecce Hiroshima in a J1 League fixture on 10 May 2026, with the current order book on Polymarket pricing a Gamba victory at 22% implied probability. This represents a substantial underdog position for the home side, reflecting either strong recent form from Hiroshima or material weakness in Ōsaka's current squad depth and tactical setup.
Historically, home advantage in J1 League matches carries meaningful weight, typically worth 8–12 percentage points in win probability for competitive fixtures. Gamba's home record at Expo '70 Stadium has generally favoured them in direct matchups against mid-table sides, though Hiroshima's defensive organisation under recent management has proven resilient. The 22% price suggests the market is pricing in either a significant injury or suspension crisis at Gamba, or a substantial gap in current form between the sides that overrides standard home-ground expectations.
Traders should monitor team news releases through April 2026 regarding key player availability, particularly any injuries to Gamba's attacking personnel or defensive anchors. Hiroshima's fixture congestion in the weeks preceding this match will be material—a congested schedule could blunt their away-day sharpness. Additionally, any managerial changes at either club or tactical shifts announced in pre-match interviews warrant attention, as these can rapidly shift market pricing. Recent J1 League standings and goal-difference records as of late April will provide concrete form data to validate whether the current probability reflects genuine performance gaps or market mispricing.
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" 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.
$56K in lifetime turnover and $0 of resting liquidity puts this market in the above 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.
Explore more prediction market odds and trading opportunities on PolyGram: