Resolution criteria on PolyGram: This market refers to the doubles tennis match between Gornes/Walkow and Grevelius/Heinonen in the Vicenza, originally scheduled for May 29, 2026 at 5:00AM ET. This market will resolve to 'Gornes/Walkow' if the team of Gornes/Walkow advances against Grevelius/Heinonen. This market will resolve to 'Grevelius/Heinonen' if the team of Grevelius/Heinonen advances against Gornes/Walkow. 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 | 100% YES | 0% NO |
| Vicenza (Doubles): Gornes/Walkow vs Grevelius/Heinonen | 0% YES | 100% NO |
Gornes and Walkow face Grevelius and Heinonen in a doubles match at the Vicenza tournament, scheduled for 29 May 2026. The current order book on Polymarket reflects a 100% implied probability for Gornes/Walkow, indicating the market has priced them as overwhelming favourites to advance. This extreme skew typically emerges when one pairing holds a substantial ranking advantage or when historical head-to-head records heavily favour one team, though such compressed probabilities warrant scrutiny given the inherent uncertainty in tennis doubles.
Doubles outcomes depend on partnership chemistry, recent form, and surface-specific strengths. Vicenza is played on clay, a surface where certain pairings excel whilst others struggle. Historical precedent suggests that when one team carries a significant ATP or ITF doubles ranking advantage, markets often overshoot probability estimates, particularly in lower-tier events where sample sizes remain small. Reviewing comparable clay-court doubles matches from 2025 and early 2026 would clarify whether this 100% reading reflects genuine dominance or market overconfidence.
Traders should monitor injury announcements or withdrawal notices through the ATP calendar and official tournament draws, typically released 5–7 days before competition. Schedule delays or surface changes would trigger the 50-50 tie-break clause. Recent tournament reports from clay-court events should confirm current form and partnership stability for both teams. The settlement window closes 5 June 2026, allowing seven days for match completion before resolution uncertainty activates.
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 "Vicenza (Doubles): Gornes/Walkow vs Grevelius/Heinonen" 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.
$696 in lifetime turnover and $0 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 5 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.
Explore more prediction market odds and trading opportunities on PolyGram: