Resolution criteria on PolyGram: This market refers to the tennis match between Harold Mayot and Eliakim Coulibaly in the Centurion 2, originally scheduled for June 5, 2026 at 4:00AM ET. This market will resolve to 'Harold Mayot' if Harold Mayot advances against Eliakim Coulibaly. This market will resolve to 'Eliakim Coulibaly' if Eliakim Coulibaly advances against Harold Mayot. 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
| Centurion 2: Harold Mayot vs Eliakim Coulibaly Set 1 Winner | 50% YES | 50% NO |
| Centurion 2: Harold Mayot vs Eliakim Coulibaly Match O/U 21.5 | 50% YES | 50% NO |
| Centurion 2: Harold Mayot vs Eliakim Coulibaly Match O/U 22.5 | 50% YES | 50% NO |
| Centurion 2: Harold Mayot vs Eliakim Coulibaly Set 1 O/U 9.5 | 50% YES | 50% NO |
| Completed Match | 50% YES | 50% NO |
| Centurion 2: Harold Mayot vs Eliakim Coulibaly | 66% YES | 34% NO |
| Centurion 2: Harold Mayot vs Eliakim Coulibaly Total Sets: O/U 2.5 | 50% YES | 50% NO |
| Centurion 2: Harold Mayot vs Eliakim Coulibaly Set 1 O/U 8.5 | 50% YES | 50% NO |
Harold Mayot and Eliakim Coulibaly are scheduled to meet in the Centurion 2 tournament on 5 June 2026 at 04:00 ET. The current order book on Polymarket reflects a 50-50 split, indicating genuine uncertainty between the two players. Both are emerging talents on the professional circuit, with limited head-to-head history that might otherwise anchor expectations. The settlement window closes on 12 June 2026, allowing a seven-day buffer for fixture delays or rescheduling before the market defaults to a split resolution.
Mayot, a French player, has shown steady progress through ATP Challenger events and lower-ranked tour matches, whilst Coulibaly, representing Côte d'Ivoire, has similarly competed at the secondary professional level. Neither player commands the ranking differential that would typically skew implied probability significantly in one direction. The even odds reflect the absence of recent form data or injury reports that might distinguish their current competitive state ahead of the scheduled date.
Traders monitoring this fixture should track official Centurion 2 draw confirmations and any late withdrawals or injury announcements in the week before play. Weather delays at the venue could trigger the seven-day extension clause, and any change to match scheduling should be cross-referenced against tournament communications. Surface conditions and recent hard-court results from both players in the weeks preceding the fixture will provide the most actionable signals for reassessing the current probability equilibrium.
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 "Centurion 2: Harold Mayot vs Eliakim Coulibaly" 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.
$60 in lifetime turnover and $2K 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.
Last 24 hours alone saw $60 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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