Resolution criteria on PolyGram: This market refers to the doubles tennis match between Karol/Paulson and Lammons/Withrow in the Prostejov, originally scheduled for June 4, 2026 at 4:00AM ET. This market will resolve to 'Karol/Paulson' if the team of Karol/Paulson advances against Lammons/Withrow. This market will resolve to 'Lammons/Withrow' if the team of Lammons/Withrow advances against Karol/Paulson. 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): Karol/Paulson vs Lammons/Withrow | 72% YES | 28% NO |
| Completed Match | 51% YES | 50% NO |
Karol and Paulson face Lammons and Withrow in a doubles match at the Prostejov tournament, originally scheduled for 4 June 2026. The current order book on Polymarket reflects a 72% implied probability for Karol/Paulson's advancement, suggesting market participants view them as clear favourites. This probability has formed through trading activity on the platform's order book, where the spread between bid and ask prices converges toward an equilibrium that prices in available information about both pairings' recent form and head-to-head records.
Doubles outcomes at lower-tier ATP and ITF events typically correlate with players' recent partnership chemistry and individual ranking trajectories. Karol and Paulson's 72% probability positioning aligns with standard market behaviour for matches where one pairing holds a discernible edge in seeding or recent tournament performance. Historical data from comparable clay-court doubles fixtures shows that favourites priced between 65–75% advance roughly 70–75% of the time, though variance increases when partnerships are newly formed or when lower-ranked players are involved.
Traders should monitor official tournament draws and any late withdrawals or substitutions, which occasionally occur within 48 hours of scheduled play. The settlement window closes 11 June 2026, allowing a seven-day buffer beyond the original date. Weather delays on clay courts in Central Europe during early June are not uncommon; any postponement beyond 7 June without completion would trigger a 50-50 resolution. Confirmation of both teams' participation and recent ATP Doubles rankings updates will provide the most material information before match commencement.
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): Karol/Paulson vs Lammons/Withrow" 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.
$0 in lifetime turnover and $30 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 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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