Resolution criteria on PolyGram: This market refers to the doubles tennis match between Prihodko/Sakamoto and Berkieta/Nagoudi in the Kosice, originally scheduled for May 26, 2026 at 4:00AM ET. This market will resolve to 'Prihodko/Sakamoto' if the team of Prihodko/Sakamoto advances against Berkieta/Nagoudi. This market will resolve to 'Berkieta/Nagoudi' if the team of Berkieta/Nagoudi advances against Prihodko/Sakamoto. 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
| Kosice (Doubles): Prihodko/Sakamoto vs Berkieta/Nagoudi | 100% YES | 0% NO |
| Completed Match | 100% YES | 0% NO |
A doubles tennis match at the Kosice tournament will pit the pairing of Prihodko and Sakamoto against Berkieta and Nagoudi on 26 May 2026. The current order book on Polymarket reflects a 100% implied probability for Prihodko/Sakamoto's advancement, suggesting the market has priced in either substantial form data, seeding advantage, or early match information that heavily favours one side. This extreme probability reading warrants scrutiny, as doubles tennis frequently produces upsets relative to singles markets, particularly when lower-ranked or less familiar partnerships face established combinations.
Historical precedent in lower-tier ATP doubles events shows that 100% probabilities typically emerge only when one pairing has withdrawn, when injury information surfaces post-scheduling, or when significant ranking disparities exist between the teams. The settlement window extends to 2 June 2026, providing a seven-day buffer beyond the scheduled match date. Traders should monitor official ATP communications for any withdrawal announcements, injury disclosures, or scheduling changes that might trigger the 50-50 resolution clause if the match is delayed beyond that window without completion.
The Kosice tournament operates on a compressed spring schedule, and weather delays or scheduling conflicts remain material risks in Eastern European venues. Any announcement regarding player availability or court conditions in the days preceding 26 May could shift the order book substantially from its current extreme positioning. The lack of intermediate probability levels suggests limited trading activity has tested the current consensus.
This market settles from the official outcome published at https://www.atptour.com/en/scores/current. 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 "Kosice (Doubles): Prihodko/Sakamoto vs Berkieta/Nagoudi" 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.
$5 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.atptour.com/en/scores/current. 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 2 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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