Resolution criteria on PolyGram: This market refers to the tennis match between Coleman Wong and Oliver Tarvet in the Birmingham, originally scheduled for June 1, 2026 at 5:30AM ET. This market will resolve to 'Coleman Wong' if Coleman Wong advances against Oliver Tarvet. This market will resolve to 'Oliver Tarvet' if Oliver Tarvet advances against Coleman Wong. 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
| Birmingham: Coleman Wong vs Oliver Tarvet | 100% YES | 0% NO |
| Completed Match | 100% YES | 0% NO |
| Birmingham: Coleman Wong vs Oliver Tarvet Match O/U 21.5 | 100% YES | 0% NO |
| Birmingham: Coleman Wong vs Oliver Tarvet Set 1 O/U 8.5 | 100% YES | 0% NO |
| Birmingham: Coleman Wong vs Oliver Tarvet Match O/U 22.5 | 100% YES | 0% NO |
| Birmingham: Coleman Wong vs Oliver Tarvet Set 1 O/U 9.5 | 100% YES | 0% NO |
| Birmingham: Coleman Wong vs Oliver Tarvet Match O/U 23.5 | 100% YES | 0% NO |
| Birmingham: Coleman Wong vs Oliver Tarvet Set 1 O/U 10.5 | 100% YES | 0% NO |
Coleman Wong and Oliver Tarvet are scheduled to meet in the Birmingham tournament on 1 June 2026, with the match originally set for 5:30 AM ET. The current order book on Polymarket reflects a 69% implied probability for Wong's advancement, suggesting the market views him as a clear favourite. This probability has formed through real-time trading activity on the platform's order book, where participants have priced Wong's chances substantially higher than an even matchup.
Historical context for early-round ATP matches at established tournaments like Birmingham shows that seeding and recent form typically drive probability distributions. Wong's elevated probability likely reflects either a seeding advantage, recent tournament performance, or head-to-head record against Tarvet. Comparable first-round encounters at grass-court events have seen favourites priced between 60–75% when there is a clear ranking or form differential, placing this market within normal ranges for such fixtures.
Traders should monitor official Birmingham tournament announcements regarding draw confirmation and any scheduling changes, particularly given the early morning ET start time which may affect player preparation or broadcast logistics. Injury updates or withdrawal news from either player in the week preceding 1 June would materially shift the order book. The settlement window closes 8 June at 09:30 UTC, allowing a seven-day buffer for match completion or rescheduling before resolution triggers occur.
Birmingham Clean Air Zone (CAZ) is an area of central Birmingham, England where traffic is restricted to reduce air pollution. It became the third UK Clean Air Zone, after London and Bath, when it launched on 1 June 2021. A study of the zone’s effectiveness, published in 2023, found mixed results, with "modest, but significant reductions" in nitrogen dioxide
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 "Birmingham: Coleman Wong vs Oliver Tarvet" 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.
$271K in lifetime turnover and $0 of resting liquidity puts this market in the top 10% 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 $223K 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 8 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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