Resolution criteria on PolyGram: This market refers to the tennis match between Matyas Cerny and Bor Artnak in the Brazzaville, originally scheduled for May 5, 2026 at 5:00AM ET. This market will resolve to 'Matyas Cerny' if Matyas Cerny advances against Bor Artnak. This market will resolve to 'Bor Artnak' if Bor Artnak advances against Matyas Cerny. 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
| Brazzaville: Matyas Cerny vs Bor Artnak | 100% YES | 0% NO |
| Brazzaville: Matyas Cerny vs Bor Artnak Set 1 O/U 8.5 | 0% YES | 100% NO |
| Brazzaville: Matyas Cerny vs Bor Artnak Set 1 Winner | 100% YES | 0% NO |
| Brazzaville: Matyas Cerny vs Bor Artnak Total Sets: O/U 2.5 | 50% YES | 50% NO |
| Brazzaville: Matyas Cerny vs Bor Artnak Match O/U 21.5 | 50% YES | 50% NO |
| Brazzaville: Matyas Cerny vs Bor Artnak Set 1 O/U 9.5 | 0% YES | 100% NO |
| Brazzaville: Matyas Cerny vs Bor Artnak Match O/U 22.5 | 50% YES | 50% NO |
| Brazzaville: Matyas Cerny vs Bor Artnak Set 1 O/U 10.5 | 0% YES | 100% NO |
Matyas Cerny and Bor Artnak are scheduled to meet in the Brazzaville tournament on 5 May 2026 at 5:00 AM ET. The current order book on Polymarket reflects a 100% implied probability for Cerny's advancement, indicating near-certainty among active traders that he will progress past Artnak. This extreme skew typically emerges when one player holds a decisive advantage in ranking, recent form, or head-to-head record, though the compressed odds leave minimal margin for upset scenarios.
Historical precedent suggests that such lopsided probabilities in lower-tier ATP Challenger events often reflect genuine disparities in player calibre. Cerny, a Czech professional, has competed across European Challenger circuits, whilst Artnak's profile suggests a lower ranking or limited recent tournament activity. When probability reaches this ceiling on Polymarket, it typically signals either a substantial ranking gap or recent performance data heavily favouring one competitor. However, the settlement window extends to 12 May, allowing seven days for schedule disruptions or match complications.
Traders should monitor official ATP Challenger announcements regarding the Brazzaville draw confirmation and any weather delays affecting the Central African venue, which occasionally impacts tournament scheduling. Court surface conditions and withdrawal announcements in the days preceding the match remain critical catalysts. The extreme current pricing leaves little room for error; any credible injury report or withdrawal by Cerny would create significant repricing pressure on the order book.
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 "Brazzaville: Matyas Cerny vs Bor Artnak" 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.
$43K in lifetime turnover and $0 of resting liquidity puts this market in the around 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 12 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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