Resolution criteria on PolyGram: This market refers to the doubles tennis match between Karol/Serdarusic and Forcano/Luque in the Kosice, originally scheduled for May 28, 2026 at 4:00AM ET. This market will resolve to 'Karol/Serdarusic' if the team of Karol/Serdarusic advances against Forcano/Luque. This market will resolve to 'Forcano/Luque' if the team of Forcano/Luque advances against Karol/Serdarusic. 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): Karol/Serdarusic vs Forcano/Luque | 100% YES | 0% NO |
| Completed Match | 100% YES | 0% NO |
A doubles tennis match between Karol/Serdarusic and Forcano/Luque is scheduled for the Kosice tournament on 28 May 2026. The market currently reflects a 100% implied probability for Karol/Serdarusic advancing, as shown across Polymarket's order book. This extreme pricing suggests either very strong conviction in the favourite or limited liquidity at the extremes, a common pattern in niche tennis markets where trading volume concentrates around major tournaments.
Doubles pairings at ATP 250 level events like Kosice typically feature mixed-ranked players, making historical precedent difficult to establish without knowing the specific seeding and recent form of these four competitors. Forcano and Luque have competed on the Challenger circuit primarily, whilst Karol and Serdarusic's recent pairing history and ranking points would determine their seeding advantage. Markets pricing at 100% often reflect information asymmetry—traders with direct knowledge of player availability, injury status, or partnership stability may have already moved prices to extremes before the broader market participates.
Key catalysts include official tournament draw confirmation and any player withdrawal announcements in the week before the match. ATP communications regarding scheduling changes or weather delays would directly affect settlement conditions. The seven-day delay clause creates a specific risk: if the match is postponed beyond 4 June 2026 without completion, the market resolves to 50-50 regardless of eventual outcome. Traders should monitor Kosice tournament updates and player injury reports through late May, as doubles commitments are frequently adjusted closer to event dates.
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): Karol/Serdarusic vs Forcano/Luque" are the same as any other PolyGram sporting 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.
$118 in lifetime turnover and $0 of resting liquidity puts this market in the below the median by volume for sports 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 4 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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