Resolution criteria on PolyGram: This market refers to the doubles tennis match between Pokorny/Sachko and Mansouri/Poljak in the Prostejov, originally scheduled for June 4, 2026 at 4:00AM ET. This market will resolve to 'Pokorny/Sachko' if the team of Pokorny/Sachko advances against Mansouri/Poljak. This market will resolve to 'Mansouri/Poljak' if the team of Mansouri/Poljak advances against Pokorny/Sachko. 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
| Prostejov (Doubles): Pokorny/Sachko vs Mansouri/Poljak | 49% YES | 52% NO |
| Completed Match | 50% YES | 50% NO |
The Prostejov doubles tournament will feature a match between the Czech pairing of Pokorny and Sachko against the Iranian-Croatian combination of Mansouri and Poljak, originally scheduled for 4 June 2026. The current order book on Polymarket reflects a 49% implied probability for Pokorny/Sachko's advancement, suggesting near-parity in market expectations between the two teams.
Doubles tennis outcomes at lower-tier ATP Challenger events like Prostejov typically hinge on surface familiarity and recent partnership chemistry rather than individual ranking points. Czech players historically perform well on home clay courts, which may provide Pokorny and Sachko with a marginal advantage in conditions they've trained on regularly. However, Mansouri and Poljak's cross-regional pairing could offer unpredictability if they've developed effective court positioning and serve-return patterns in recent tournaments. The 49-51 split in current pricing suggests traders view these factors as roughly balanced.
Key variables to monitor include any late withdrawals or schedule adjustments before the settlement window closes on 11 June. Injury announcements or last-minute partner changes in the week preceding the match could shift the probability substantially, particularly given the seven-day buffer built into the resolution criteria. Recent form data from both teams' performances at comparable Challenger events would provide concrete evidence for repositioning. Traders should track official ATP communications regarding the Prostejov draw confirmation and any weather-related delays that might affect court conditions on clay.
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 "Prostejov (Doubles): Pokorny/Sachko vs Mansouri/Poljak" 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 $21 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.
Last 24 hours alone saw $5 in turnover, well above the lifetime daily-average for this market — a clear sign of news catalysing trader activity right now.
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 11 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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