Resolution criteria on PolyGram: In the upcoming J2 100 Year Vision League game between Nara Club and Kataller Toyama, scheduled for May 23, 2026 at 1:00 AM ET: This event contains halftime result markets for home, draw, and away outcomes within the first 45 minutes of regular play plus stoppage time.
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
| Nara Club | 49% YES | 51% NO |
| Draw | 49% YES | 52% NO |
| Kataller Toyama | 49% YES | 52% NO |
Nara Club will host Kataller Toyama in a J2 League fixture on 23 May 2026, with this market settling on the halftime scoreline after 45 minutes plus stoppage time. The current order book on Polymarket reflects a 49% probability for a Nara Club halftime victory, suggesting near-parity with alternative outcomes. Settlement occurs at 05:00 UTC, approximately four hours after the 01:00 ET kick-off.
Halftime markets in J2 League matches typically exhibit tighter distributions than full-match outcomes, given the reduced sample space and fewer scoring opportunities in a single half. Historical data from comparable Asian second-tier leagues shows that home-side halftime advantages tend to range between 45–55% depending on squad quality and recent form. Nara Club's home record and Kataller Toyama's defensive stability through the 2025 season will inform whether the current 49% reflects genuine equilibrium or undervaluation of either side's attacking threat in the opening period.
Key variables for traders include confirmed team sheets released 24 hours pre-match, which may reveal absences affecting pressing intensity or set-piece vulnerability. Recent J2 League scheduling patterns show that early-morning fixtures (local time) occasionally correlate with reduced first-half intensity, though this effect remains marginal. Weather conditions at Nara's stadium and any late injury announcements will influence order-book movement in the final hours before settlement. The 49% probability suggests the market has not yet fully priced in available information on squad availability or tactical adjustments.
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 "Nara Club vs. Kataller Toyama - Halftime Result" 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 $93 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 23 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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