Resolution criteria on PolyGram: This market refers to the tennis match between Yuki Naito and Valentina Ryser in the ITF Women Takasaki, originally scheduled for May 24, 2026 at 12:00AM ET. This market will resolve to 'Yuki Naito' if Yuki Naito advances against Valentina Ryser. This market will resolve to 'Valentina Ryser' if Valentina Ryser advances against Yuki Naito. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, this market will resolve to 50-50.
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
| ITF Takasaki: Yuki Naito vs Valentina Ryser | 100% YES | 0% NO |
| Completed Match | 100% YES | 0% NO |
Yuki Naito, a Japanese ITF circuit regular, faces Valentina Ryser in the ITF Women's Takasaki tournament scheduled for 24 May 2026. The match is a lower-tier professional tennis fixture on the International Tennis Federation women's circuit, where both players compete for ranking points and prize money. The current Polymarket order book reflects a 100% implied probability for the match occurring and resolving to a winner, suggesting traders view cancellation or non-completion as negligible risks at this stage.
ITF Women's events at the Takasaki level typically proceed as scheduled unless weather or player injury intervenes. Historical data from comparable ITF tournaments shows completion rates exceed 95% when matches are scheduled more than two weeks in advance, which provides context for the market's current pricing. Naito holds a modest ranking advantage on the ITF circuit, though both players operate within similar competitive tiers where match outcomes remain genuinely uncertain. The 100% probability on Polymarket reflects confidence in the match occurring rather than a strong directional lean toward either player's victory.
Traders should monitor the ITF official tournament draw and player injury reports through late May. Weather forecasts for the Takasaki region become relevant in the final week before play. Any announcement of player withdrawal or tournament postponement would trigger immediate repricing. The settlement window extends to 31 May 2026, providing a seven-day buffer beyond the scheduled date for delayed matches to conclude.
This market settles from the official outcome published at https://www.itftennis.com/en/tournament-calendar/. 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 "ITF Takasaki: Yuki Naito vs Valentina Ryser" are the same as any other PolyGram 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.
$38K in lifetime turnover and $0 of resting liquidity puts this market in the around the median by volume for games 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.itftennis.com/en/tournament-calendar/. 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 31 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: