Resolution criteria on PolyGram: This market refers to the doubles tennis match between Duncan/Whitehouse and Maric/Mikrut in the Zagreb, originally scheduled for May 15, 2026 at 11:00AM ET. This market will resolve to 'Duncan/Whitehouse' if the team of Duncan/Whitehouse advances against Maric/Mikrut. This market will resolve to 'Maric/Mikrut' if the team of Maric/Mikrut advances against Duncan/Whitehouse. 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
| Zagreb (Doubles): Duncan/Whitehouse vs Maric/Mikrut | 84% YES | 17% NO |
| Completed Match | 50% YES | 50% NO |
| Zagreb (Doubles): Duncan/Whitehouse vs Maric/Mikrut Total Sets: O/U 2.5 | 50% YES | 50% NO |
| Zagreb (Doubles): Duncan/Whitehouse vs Maric/Mikrut Set 1 O/U 8.5 | 51% YES | 50% NO |
| Zagreb (Doubles): Duncan/Whitehouse vs Maric/Mikrut Match O/U 21.5 | 50% YES | 50% NO |
| Zagreb (Doubles): Duncan/Whitehouse vs Maric/Mikrut Set 1 O/U 9.5 | 50% YES | 50% NO |
| Zagreb (Doubles): Duncan/Whitehouse vs Maric/Mikrut Match O/U 22.5 | 51% YES | 50% NO |
| Zagreb (Doubles): Duncan/Whitehouse vs Maric/Mikrut Set 1 O/U 10.5 | 50% YES | 51% NO |
Duncan and Whitehouse face Maric and Mikrut in a doubles match at the Zagreb tournament, originally scheduled for 15 May 2026. The current order book on Polymarket prices Duncan/Whitehouse at 84% implied probability, reflecting substantial confidence in their advancement. This pricing emerges from real-time trading activity where the spread between bid and ask reflects market participants' assessment of the matchup relative to available information.
Comparable doubles pairings at ATP 250 level tournaments show that seeding and recent form typically drive 75–85% probabilities for favoured teams, particularly when one pairing has established chemistry or higher ranking. The 84% figure sits within this expected range for a match where Duncan/Whitehouse likely hold a ranking or seeding advantage. Historical volatility in doubles markets tends to compress as match dates approach, with late movement often driven by injury reports or withdrawal announcements rather than fundamental reassessment.
Traders should monitor official tournament draws and any injury bulletins from the ATP or tournament organisers in the week preceding 15 May. Weather delays at Zagreb could trigger the seven-day extension clause, which would resolve the market at 50-50 if no winner is determined by 22 May. Withdrawal by either player would similarly affect settlement. The current probability assumes the match proceeds as scheduled; any announcement regarding player availability or court conditions would likely shift the order book materially.
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 "Zagreb (Doubles): Duncan/Whitehouse vs Maric/Mikrut" 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 $368 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 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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