Resolution criteria on PolyGram: This market refers to the doubles tennis match between Banthia/Donski and Escobar/Kestelboim in the Oeiras 4, originally scheduled for May 15, 2026 at 10:30AM ET. This market will resolve to 'Banthia/Donski' if the team of Banthia/Donski advances against Escobar/Kestelboim. This market will resolve to 'Escobar/Kestelboim' if the team of Escobar/Kestelboim advances against Banthia/Donski. 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): Banthia/Donski vs Escobar/Kestelboim | 59% YES | 42% NO |
| Completed Match | 50% YES | 51% NO |
| Oeiras 4 (Doubles): Banthia/Donski vs Escobar/Kestelboim Total Sets: O/U 2.5 | 50% YES | 50% NO |
| Oeiras 4 (Doubles): Banthia/Donski vs Escobar/Kestelboim Match O/U 21.5 | 50% YES | 50% NO |
| Oeiras 4 (Doubles): Banthia/Donski vs Escobar/Kestelboim Match O/U 22.5 | 50% YES | 50% NO |
| Oeiras 4 (Doubles): Banthia/Donski vs Escobar/Kestelboim Match O/U 23.5 | 50% YES | 50% NO |
| Oeiras 4 (Doubles): Banthia/Donski vs Escobar/Kestelboim Set 1 O/U 8.5 | 50% YES | 50% NO |
| Oeiras 4 (Doubles): Banthia/Donski vs Escobar/Kestelboim Set 1 O/U 9.5 | 50% YES | 50% NO |
Banthia and Donski face Escobar and Kestelboim in a doubles match at the Oeiras 4 tournament, scheduled for 15 May 2026 at 10:30 AM ET. The current order book on Polymarket reflects a 50-50 split, indicating genuine uncertainty amongst traders about which pairing will advance. This even probability suggests neither team carries a clear edge in the market's assessment, with liquidity distributed evenly across both outcomes as of the settlement window's opening.
Doubles tennis outcomes at lower-tier ATP Challenger events like Oeiras 4 typically hinge on serve-and-volley consistency and break-point conversion rather than baseline dominance. Historical data from comparable Challenger doubles draws shows that seeding, recent partnership chemistry, and surface-specific form matter considerably; unseeded or newly paired teams often face longer odds despite individual player credentials. The 50-50 pricing here suggests the market views these pairings as relatively balanced in those dimensions, or lacks sufficient historical precedent to differentiate them sharply.
Traders should monitor official tournament draws and any late withdrawals or substitutions, which occasionally occur in Challenger events. Injury updates or last-minute partnership changes could shift the order book materially. The settlement window closes 22 May 2026 at 14:30 UTC, allowing a week-long buffer beyond the scheduled match date; any significant delay beyond that triggers a 50-50 resolution. Current court conditions and weather forecasts for Oeiras in mid-May may also influence serve-dominant strategies once match day approaches.
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): Banthia/Donski vs Escobar/Kestelboim" 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 $76 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 22 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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