Resolution criteria on PolyGram: This event is for the upcoming J2 100 Year Vision League game, scheduled for Sunday, May 17, 2026 between Iwaki FC and Matsumoto Yamaga FC.
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
| Iwaki FC | 50% YES | 50% NO |
| Draw (Iwaki FC vs. Matsumoto Yamaga FC) | 24% YES | 77% NO |
| Matsumoto Yamaga FC | 39% YES | 61% NO |
Iwaki FC will face Matsumoto Yamaga FC in a J2 League fixture on 17 May 2026. The current order book on Polymarket reflects a 50% implied probability, suggesting traders view this as a genuine toss-up between the two sides. The settlement window closes at 05:00 UTC on the match date, giving traders roughly five months to adjust positions as new information emerges.
Both clubs operate in Japan's second tier, where competitive balance tends to be tighter than in the J1 League. Historical J2 seasons show that mid-table sides can produce unpredictable results, particularly in May when fixture congestion and squad rotation become factors. Matsumoto Yamaga has established itself as a consistent mid-table performer in recent seasons, whilst Iwaki FC's trajectory and current squad depth will be material to how the market reprices. The 50-50 split suggests the market lacks strong conviction about either side's form or injury status at this stage.
Traders should monitor squad announcements, managerial changes, and league standings as the 2026 season progresses. Fixture scheduling—particularly whether either side faces congested midweek commitments before 17 May—will influence team selection and fatigue levels. Recent J2 coverage from sources such as the Japan Football Association's official communications and domestic sports outlets will signal any significant roster movements or tactical shifts. Home advantage at Iwaki's or Matsumoto's ground, once confirmed, may also shift the probability as match day approaches.
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 "Iwaki FC vs. Matsumoto Yamaga FC" 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.
Explore more prediction market odds and trading opportunities on PolyGram: