Resolution criteria on PolyGram: This event is for the upcoming J2 100 Year Vision League game, scheduled for Sunday, May 17, 2026 between FC Ryūkyū and Gainare Tottori.
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
| FC Ryūkyū | 47% YES | 54% NO |
| Draw (FC Ryūkyū vs. Gainare Tottori) | 39% YES | 62% NO |
| Gainare Tottori | 40% YES | 60% NO |
FC Ryūkyū will host Gainare Tottori in the J2 League on 17 May 2026. The J2 100 Year Vision League is Japan's second tier, and both clubs compete in a 22-team division where promotion and relegation carry significant financial consequences. The current 50% implied probability on Polymarket's order book reflects genuine uncertainty about the outcome, with neither side commanding clear favouritism in the market's pricing.
Ryūkyū and Tottori have contrasting recent trajectories in the J2. Ryūkyū, based in Okinawa, have established themselves as mid-table competitors with a stable infrastructure, whilst Tottori have experienced volatility in their league position and managerial appointments. Historical head-to-head records between these clubs show competitive matches with no dominant pattern, which partly explains why traders are pricing this fixture at even odds rather than favouring the home side significantly.
Traders should monitor team news releases through April and May, particularly injury updates to key players and any managerial changes announced before the fixture. Fixture congestion in the J2 schedule—including cup competitions and midweek matches—can affect squad rotation and fatigue levels. Recent form in the weeks immediately preceding 17 May will be critical; a run of wins or losses for either side could shift the probability meaningfully as traders adjust positions. Weather conditions in Okinawa during May, whilst typically warm, occasionally feature rain that influences playing style and match outcomes.
FC Ryukyu Okinawa is a Japanese professional football club based in Okinawa. The club plays in the J3 League, Japanese third tier of professional football. The team's home stadium is Okinawa Athletic Park Stadium, in Okinawa Prefecture, Japan.
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 "FC Ryūkyū vs. Gainare Tottori" 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.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 17 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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