Resolution criteria on PolyGram: This market refers to the tennis match between Zdenek Kolar and Hugo Dellien in the Oeiras 4, originally scheduled for May 13, 2026 at 9:00AM ET. This market will resolve to 'Zdenek Kolar' if Zdenek Kolar advances against Hugo Dellien. This market will resolve to 'Hugo Dellien' if Hugo Dellien advances against Zdenek Kolar. 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. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.
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: Zdenek Kolar vs Hugo Dellien | 0% YES | 100% NO |
| Completed Match | 100% YES | 0% NO |
| Oeiras 4: Zdenek Kolar vs Hugo Dellien Set 1 O/U 8.5 | 100% YES | 0% NO |
| Oeiras 4: Zdenek Kolar vs Hugo Dellien Set 1 O/U 9.5 | 100% YES | 0% NO |
| Oeiras 4: Zdenek Kolar vs Hugo Dellien Set 1 O/U 10.5 | 0% YES | 100% NO |
| Oeiras 4: Zdenek Kolar vs Hugo Dellien Match O/U 21.5 | 100% YES | 0% NO |
| Oeiras 4: Zdenek Kolar vs Hugo Dellien Match O/U 22.5 | 100% YES | 0% NO |
| Oeiras 4: Zdenek Kolar vs Hugo Dellien Match O/U 23.5 | 100% YES | 0% NO |
Zdenek Kolar and Hugo Dellien are scheduled to meet in the first round of the Oeiras 4 ATP Challenger event on 13 May 2026. The 0% implied probability on Polymarket's order book reflects either minimal liquidity at the current moment or a strong consensus positioning against Kolar advancing. With settlement occurring on 20 May, traders have a seven-day window post-match for resolution, though any delay beyond that triggers a 50-50 split unless a definitive winner emerges.
Kolar, a Czech player ranked outside the top 200, has competed sporadically on the Challenger circuit with mixed results in 2025–2026. Dellien, a Bolivian player with ATP experience, typically ranks in the 150–200 range and has shown more consistent Challenger-level performance. Historical matchups between players of similar ranking at this tier often reflect modest odds differentials rather than extreme probabilities, suggesting the current 0% may signal either a data gap or illiquidity rather than certainty about Dellien's superiority.
Traders should monitor entry lists and draw confirmations from the ATP website as the event approaches, particularly any late withdrawals or injury announcements that could alter the match composition. Weather disruptions in Portugal during May are uncommon but possible; the Oeiras venue's outdoor clay courts could face delays. Any retirement or walkover would trigger the 50-50 resolution clause, making match completion status a critical variable alongside head-to-head form in the weeks immediately preceding 13 May.
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: Zdenek Kolar vs Hugo Dellien" 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.
$163K in lifetime turnover and $2.1M of resting liquidity puts this market in the top 30% by volume for tennis contracts on PolyGram. Order-book depth is exceptional — among the deepest order books in the category.
Last 24 hours alone saw $163K 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 20 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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