Resolution criteria on PolyGram: This market refers to the tennis match between Hynek Barton and Taro Daniel in the Prostejov, originally scheduled for June 5, 2026 at 7:30AM ET. This market will resolve to 'Hynek Barton' if Hynek Barton advances against Taro Daniel. This market will resolve to 'Taro Daniel' if Taro Daniel advances against Hynek Barton. 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. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances.
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
| Prostejov: Hynek Barton vs Taro Daniel | 69% YES | 32% NO |
| Completed Match | 50% YES | 50% NO |
| Prostejov: Hynek Barton vs Taro Daniel Total Sets: O/U 2.5 | 36% YES | 64% NO |
| Prostejov: Hynek Barton vs Taro Daniel Set 1 Winner | 64% YES | 36% NO |
| Prostejov: Hynek Barton vs Taro Daniel Set 1 O/U 8.5 | 75% YES | 26% NO |
| Prostejov: Hynek Barton vs Taro Daniel Match O/U 21.5 | 53% YES | 48% NO |
| Prostejov: Hynek Barton vs Taro Daniel Set 1 O/U 9.5 | 50% YES | 50% NO |
| Prostejov: Hynek Barton vs Taro Daniel Match O/U 22.5 | 47% YES | 54% NO |
Hynek Barton, the Czech player ranked outside the top 200, faces Japan's Taro Daniel at the ATP Challenger event in Prostejov on 5 June 2026. The current order book on Polymarket prices Barton's advancement at 67%, reflecting a modest favourite status despite Daniel's superior ranking and experience on the professional circuit. Daniel has competed regularly at ATP 250 level and possesses greater consistency across surfaces, whilst Barton's record suggests he performs better on clay courts where Prostejov's tournament is contested.
Historical matchups between players of this ranking differential typically favour the higher-ranked competitor, though home-court advantage for Barton—playing in his native Czech Republic—has historically compressed such gaps by 8–12 percentage points in Challenger events. Daniel's recent form and injury status will be material; the Japanese player has shown vulnerability to aggressive baseline play from unseeded opponents in 2025–2026 Challenger rounds. The settlement window closes on 12 June, allowing seven days for completion, which accommodates standard Challenger scheduling.
Traders should monitor official ATP Challenger updates for any withdrawals or scheduling changes in the days preceding the match. Surface conditions at Prostejov and any late injury announcements regarding either player will influence the order book materially. Daniel's recent match results and court-surface performance data from May 2026 will provide concrete signals for position adjustment ahead of the 5 June fixture.
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 "Prostejov: Hynek Barton vs Taro Daniel" 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.
$138 in lifetime turnover and $27K 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 $138 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 12 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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