Resolution criteria on PolyGram: This market refers to the tennis match between Beatriz Haddad Maia and Diane Parry in the Paris, originally scheduled for May 12, 2026 at 4:00AM ET. This market will resolve to 'Beatriz Haddad Maia' if Beatriz Haddad Maia advances against Diane Parry. This market will resolve to 'Diane Parry' if Diane Parry advances against Beatriz Haddad Maia. 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
| Paris: Beatriz Haddad Maia vs Diane Parry | 56% YES | 45% NO |
| Completed Match | 50% YES | 51% NO |
| Paris: Beatriz Haddad Maia vs Diane Parry Set 1 O/U 8.5 | 69% YES | 31% NO |
| Paris: Beatriz Haddad Maia vs Diane Parry Set 1 O/U 9.5 | 59% YES | 41% NO |
| Paris: Beatriz Haddad Maia vs Diane Parry Set 1 O/U 10.5 | 23% YES | 77% NO |
| Paris: Beatriz Haddad Maia vs Diane Parry Set 1 Winner | 54% YES | 46% NO |
| Paris: Beatriz Haddad Maia vs Diane Parry Total Sets: O/U 2.5 | 37% YES | 63% NO |
| Paris: Beatriz Haddad Maia vs Diane Parry Match O/U 21.5 | 49% YES | 51% NO |
Beatriz Haddad Maia, the Brazilian world number 15, faces French qualifier Diane Parry in the opening rounds of the Paris clay-court tournament scheduled for 12 May 2026. The current order book on Polymarket reflects a 54% implied probability favouring Haddad Maia's advancement, suggesting near-even odds despite her higher ranking. The match timing—originally scheduled for 4:00 AM ET—may affect trading liquidity and information flow relative to European market hours.
Haddad Maia has demonstrated consistent clay-court form, reaching multiple WTA quarterfinals on the surface in recent seasons, whilst Parry, competing as a home qualifier, carries the unpredictability typical of unseeded French players in early rounds. Head-to-head records between players of differing rankings on home soil often compress probability gaps; Parry's local advantage and wildcard status warrant consideration against Haddad Maia's superior seeding and recent tour results.
Traders should monitor official tournament draw confirmations and any late injury withdrawals in the days preceding 12 May, as both players' participation in preceding warm-up events will signal fitness levels. Weather conditions on the day—particularly wind and court speed variations—historically favour different playing styles; Parry's serve-and-volley tendencies may prove more effective in certain conditions than Haddad Maia's baseline-heavy game. The settlement window extends to 19 May, allowing seven days for match completion before resolution triggers the 50-50 tie clause.
María Beatriz Pagés Llergo Rebollar is a Mexican journalist and politician from the Institutional Revolutionary Party (PRI). From 2006 to 2009 she sat in the Chamber of Deputies as a plurinominal deputy. In 2019 she resigned from the party, saying that it had been handed over to President Andrés Manuel López Obrador. She has been critical of the president's
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 "Paris: Beatriz Haddad Maia vs Diane Parry" 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.
$6K in lifetime turnover and $36K of resting liquidity puts this market in the below the median by volume for tennis contracts on PolyGram. Order-book depth is strong — order books support five-figure trades with single-cent slippage.
Last 24 hours alone saw $6K 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.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 19 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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