Resolution criteria on PolyGram: This market refers to the tennis match between Ana Grubor and Maiko Uchijima in the ITF Women Wichita, originally scheduled for May 27, 2026 at 3:15PM ET. This market will resolve to 'Ana Grubor' if Ana Grubor advances against Maiko Uchijima. This market will resolve to 'Maiko Uchijima' if Maiko Uchijima advances against Ana Grubor. 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. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.
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 Wichita: Ana Grubor vs Maiko Uchijima | 100% YES | 0% NO |
| Completed Match | 100% YES | 0% NO |
Ana Grubor faces Maiko Uchijima in the ITF Women's tournament at Wichita, scheduled for 27 May 2026. The match is a qualifying or main-draw fixture in a lower-tier professional circuit where both players compete for ranking points and prize money. The current order book on Polymarket shows the market at 100% implied probability for Grubor, reflecting either extremely lopsided expectations or minimal trading volume at present. With settlement occurring on 3 June 2026, there remains a five-day window after the scheduled match date for resolution.
ITF Women's events typically feature players ranked between 200 and 800 on the WTA rankings, with outcomes heavily influenced by recent form, surface preference, and head-to-head records. Grubor, a Serbian player, and Uchijima, a Japanese competitor, operate in this tier where upsets are common and seeding carries less predictive weight than in WTA 500 or Grand Slam events. The 100% probability suggests either a significant disparity in recent rankings or limited market participation; comparable ITF matches on Polymarket rarely settle at such extremes unless one player has withdrawn or faced injury.
Traders should monitor official ITF and tournament communications for any withdrawal announcements, which would trigger the 50-50 resolution clause. Surface conditions at Wichita's hard courts and any late schedule changes warrant attention. Recent player injury reports or ranking fluctuations in the weeks preceding 27 May could shift the order book substantially if additional capital enters the market.
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 Wichita: Ana Grubor vs Maiko Uchijima" 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.
$785 in lifetime turnover and $0 of resting liquidity puts this market in the below the median by volume for tennis 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 3 June 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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