Resolution criteria on PolyGram: This market refers to the tennis match between Mathys Erhard and Stefan Dostanic in the Kosice, originally scheduled for May 27, 2026 at 4:00AM ET. This market will resolve to 'Mathys Erhard' if Mathys Erhard advances against Stefan Dostanic. This market will resolve to 'Stefan Dostanic' if Stefan Dostanic advances against Mathys Erhard. 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
| Kosice: Mathys Erhard vs Stefan Dostanic | 100% YES | 0% NO |
| Completed Match | 0% YES | 100% NO |
| Kosice: Mathys Erhard vs Stefan Dostanic Total Sets: O/U 2.5 | 50% YES | 50% NO |
| Kosice: Mathys Erhard vs Stefan Dostanic Set 1 O/U 8.5 | 100% YES | 0% NO |
| Kosice: Mathys Erhard vs Stefan Dostanic Set 1 O/U 9.5 | 100% YES | 0% NO |
| Kosice: Mathys Erhard vs Stefan Dostanic Set 1 O/U 10.5 | 100% YES | 0% NO |
| Kosice: Mathys Erhard vs Stefan Dostanic Match O/U 21.5 | 50% YES | 50% NO |
| Kosice: Mathys Erhard vs Stefan Dostanic Match O/U 22.5 | 50% YES | 50% NO |
Mathys Erhard and Stefan Dostanic are scheduled to compete in a tennis match at the Kosice tournament on 27 May 2026. The current order book on Polymarket reflects a 100% implied probability for Erhard's advancement, suggesting the market is pricing in either a strong expectation of his victory or, more likely given the extreme skew, insufficient liquidity and trading activity to establish a competitive two-sided market. At this probability level, the YES position commands minimal premium, indicating either very early-stage pricing before meaningful volume arrives or a consensus view that requires substantial new information to shift.
Historical precedent from lower-tier ATP Challenger events shows that matches at venues like Kosice typically proceed as scheduled absent extraordinary circumstances. Erhard, a French player ranked outside the top 200, and Dostanic, a Serbian competitor with similar ranking profile, represent the typical participant pool for such tournaments. When both players are of comparable ranking and neither carries injury concerns into the event week, the market often settles on the favourite based on recent form and head-to-head record, though such data may be sparse between lesser-known competitors.
Traders should monitor official ATP Challenger tour announcements regarding draw confirmation and any player withdrawals in the fortnight preceding the match. Injury reports or late schedule changes would be the primary catalysts to shift current pricing. The settlement window closes 3 June 2026, allowing six days beyond the scheduled date for match completion before the 50-50 tie-break resolution triggers.
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 "Kosice: Mathys Erhard vs Stefan Dostanic" 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.
$56K in lifetime turnover and $0 of resting liquidity puts this market in the above 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 3 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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