Resolution criteria on PolyGram: This market refers to the doubles tennis match between Jecan/Pavel and Banthia/Donski in the Oeiras 4, originally scheduled for May 14, 2026 at 10:30AM ET. This market will resolve to 'Jecan/Pavel' if the team of Jecan/Pavel advances against Banthia/Donski. This market will resolve to 'Banthia/Donski' if the team of Banthia/Donski advances against Jecan/Pavel. 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
| Oeiras 4 (Doubles): Jecan/Pavel vs Banthia/Donski | 41% YES | 59% NO |
| Completed Match | 50% YES | 51% NO |
A doubles tennis match at the Oeiras 4 tournament will pit the pairing of Jecan and Pavel against Banthia and Donski, originally scheduled for 14 May 2026. The match is set for 10:30 AM ET, with the settlement window closing on 21 May at 14:30 UTC. The current order book on Polymarket reflects a 41% implied probability for a Jecan/Pavel victory, suggesting the market views Banthia/Donski as slight favourites at approximately 59%.
Doubles tennis outcomes depend heavily on partnership chemistry, recent form, and surface compatibility. The Oeiras tournament is played on clay, which typically favours teams with strong net play and serve-and-volley tactics. Historical precedent from ATP and WTA doubles events shows that unseeded or lower-ranked pairings often underperform relative to their individual rankings when competing against established teams, though clay courts can produce upsets when one pairing has superior court-specific experience. The 41% probability for Jecan/Pavel suggests the market has assessed them as the less favoured combination, though not decisively so.
Key developments to monitor include official draw confirmations, any player withdrawals or injury announcements in the week preceding the match, and recent head-to-head records between these specific pairings. Weather conditions on clay can shift match dynamics significantly; extended rain could delay proceedings beyond the seven-day threshold that would trigger a 50-50 resolution. Tournament scheduling updates and player statements regarding form will provide concrete signals for traders adjusting positions before the settlement window closes.
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 "Oeiras 4 (Doubles): Jecan/Pavel vs Banthia/Donski" 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.
$0 in lifetime turnover and $182 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 21 May 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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