Resolution criteria on PolyGram: This market refers to the doubles tennis match between Gibson/Tjen and Hruncakova/Valdmannova in the Birmingham, originally scheduled for June 5, 2026 at 6:00AM ET. This market will resolve to 'Gibson/Tjen' if the team of Gibson/Tjen advances against Hruncakova/Valdmannova. This market will resolve to 'Hruncakova/Valdmannova' if the team of Hruncakova/Valdmannova advances against Gibson/Tjen. 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
| Birmingham (Doubles): Gibson/Tjen vs Hruncakova/Valdmannova | 44% YES | 56% NO |
| Completed Match | 50% YES | 50% NO |
Gibson and Tjen face Hruncakova and Valdmannova in a women's doubles match at Birmingham scheduled for 5 June 2026. The current order book on Polymarket reflects a 53% implied probability for Gibson/Tjen, suggesting near-parity between the two pairings with a modest lean towards the favourites. This probability has formed through real-time trading activity and represents the aggregate assessment of market participants pricing the match outcome.
Doubles tennis outcomes depend heavily on partnership chemistry, recent form, and surface suitability. Gibson and Tjen's historical record against comparable opponents and their performance on grass courts—Birmingham is a grass-court event—provides the baseline for evaluating their 53% probability. Hruncakova and Valdmannova's recent tournament results and head-to-head record against top-ranked pairs offer context for whether the current pricing undervalues or overvalues either team. Comparable doubles matches at grass-court events typically see tighter probability distributions when both teams carry similar rankings.
Traders should monitor official tournament draws and any late withdrawals or injury announcements in the week preceding 5 June. Partnership changes or recent tournament performances by either pairing could shift the order book materially. The settlement window closes 12 June, providing a seven-day buffer for match completion; delays beyond this trigger a 50-50 resolution. Weather disruptions at Birmingham are a secondary consideration, though grass-court events typically proceed unless conditions are severe.
This market settles from the official outcome published at https://www.wtatennis.com/scores. 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 (Doubles): Gibson/Tjen vs Hruncakova/Valdmannova" 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.
$0 in lifetime turnover and $23 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.
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.wtatennis.com/scores. 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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