Resolution criteria on PolyGram: This market refers to the tennis match between Stefan Dostanic and Chris Rodesch in the Zagreb, originally scheduled for May 11, 2026 at 4:00AM ET. This market will resolve to 'Stefan Dostanic' if Stefan Dostanic advances against Chris Rodesch. This market will resolve to 'Chris Rodesch' if Chris Rodesch advances against Stefan Dostanic. 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: Stefan Dostanic vs Chris Rodesch Match O/U 21.5 | 51% YES | 49% NO |
| Zagreb: Stefan Dostanic vs Chris Rodesch Set 1 O/U 8.5 | 75% YES | 25% NO |
| Zagreb: Stefan Dostanic vs Chris Rodesch Set 1 O/U 9.5 | 50% YES | 50% NO |
| Zagreb: Stefan Dostanic vs Chris Rodesch Set 1 O/U 10.5 | 26% YES | 74% NO |
| Zagreb: Stefan Dostanic vs Chris Rodesch Total Sets: O/U 2.5 | 35% YES | 65% NO |
| Zagreb: Stefan Dostanic vs Chris Rodesch Set 1 Winner | 35% YES | 65% NO |
| Zagreb: Stefan Dostanic vs Chris Rodesch Match O/U 22.5 | 43% YES | 57% NO |
| Zagreb: Stefan Dostanic vs Chris Rodesch Match O/U 23.5 | 50% YES | 50% NO |
Stefan Dostanic and Chris Rodesch are scheduled to meet in a Zagreb tennis match on 11 May 2026. The current order book on Polymarket reflects a 51% implied probability for Dostanic's advancement, suggesting near-parity between the two outcomes with marginal confidence in the favourite. Settlement occurs on 18 May 2026, allowing a seven-day window for match completion; any cancellation, tie, or unresolved delay beyond that period triggers a 50-50 resolution.
Both players compete primarily on the ATP Challenger circuit, where surface preference and recent form carry substantial weight. Dostanic, a Serbian player, has shown variable results on clay courts in Eastern European tournaments, whilst Rodesch, competing from Luxembourg, typically performs better on faster surfaces. Historical matchups between similarly-ranked Challenger-level competitors suggest that home-court advantage in Zagreb—where Dostanic may benefit from regional familiarity—typically shifts probabilities by 3–5 percentage points. The current 51-49 split reflects this marginal edge without overweighting it.
Traders should monitor ATP Challenger draw confirmations and any late withdrawals or injury announcements in the week preceding the match. Recent scheduling changes across European spring tournaments have occasionally forced reschedules; confirmation of the 4:00 AM ET start time and venue availability will clarify execution risk. Surface conditions and weather forecasts for Zagreb in mid-May may also influence pre-match adjustments, particularly if either player has documented performance disparities on clay versus alternative surfaces.
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: Stefan Dostanic vs Chris Rodesch" 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.
$749 in lifetime turnover and $25K of resting liquidity puts this market in the below the median by volume for tennis contracts on PolyGram. Order-book depth is modest — expect a couple of cents of slippage on $1k+ trades.
Last 24 hours alone saw $729 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 18 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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