Resolution criteria on PolyGram: This market refers to the doubles tennis match between Cornea/Laaroussi and Goldhoff/Harper in the Heilbronn, originally scheduled for June 2, 2026 at 4:00AM ET. This market will resolve to 'Cornea/Laaroussi' if the team of Cornea/Laaroussi advances against Goldhoff/Harper. This market will resolve to 'Goldhoff/Harper' if the team of Goldhoff/Harper advances against Cornea/Laaroussi. 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
| Completed Match | 50% YES | 50% NO |
| Heilbronn (Doubles): Cornea/Laaroussi vs Goldhoff/Harper | 50% YES | 50% NO |
The Heilbronn doubles draw will feature Romanian player Cornea paired with Laaroussi against the pairing of Goldhoff and Harper in what appears to be an early-round encounter. The match was originally scheduled for 4:00 AM ET on 2 June 2026. Current order book activity on Polymarket reflects a 50-50 split, suggesting traders see genuine uncertainty between the two pairings, with no clear favourite emerging from recent form data or seeding information available at market inception.
Doubles outcomes at ATP 250 level events like Heilbronn typically hinge on serve-and-volley consistency and first-serve percentages rather than baseline dominance. Historical precedent shows that unseeded or lower-ranked pairings frequently advance when they hold serve effectively, particularly on grass or faster courts where net play becomes decisive. The current even split reflects this inherent volatility in doubles matchups, where partnership chemistry and tactical execution often trump individual ranking points.
Traders should monitor official ATP scheduling confirmations as the June settlement window approaches, particularly any weather delays or court surface changes that might favour one pairing's strengths. Injury reports or late partnership changes would materially shift the probability; the market currently assumes both teams arrive fit and unchanged. The 7-day cancellation clause means matches delayed beyond 8 June 2026 without completion will resolve to 50-50, creating a hard deadline for resolution certainty.
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 "Heilbronn (Doubles): Cornea/Laaroussi vs Goldhoff/Harper" 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 $2 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 9 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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