Resolution criteria on PolyGram: This market refers to the tennis match between Tatiana Pieri and Sofia Costoulas in the Foggia, originally scheduled for June 3, 2026 at 5:00AM ET. This market will resolve to 'Tatiana Pieri' if Tatiana Pieri advances against Sofia Costoulas. This market will resolve to 'Sofia Costoulas' if Sofia Costoulas advances against Tatiana Pieri. 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
| Foggia: Tatiana Pieri vs Sofia Costoulas Match O/U 21.5 | 51% YES | 49% NO |
| Foggia: Tatiana Pieri vs Sofia Costoulas Match O/U 22.5 | 53% YES | 48% NO |
| Foggia: Tatiana Pieri vs Sofia Costoulas Match O/U 23.5 | 50% YES | 50% NO |
| Foggia: Tatiana Pieri vs Sofia Costoulas Total Sets: O/U 2.5 | 30% YES | 71% NO |
| Foggia: Tatiana Pieri vs Sofia Costoulas Set 1 Winner | 24% YES | 77% NO |
| Foggia: Tatiana Pieri vs Sofia Costoulas Set 1 O/U 8.5 | 58% YES | 42% NO |
| Foggia: Tatiana Pieri vs Sofia Costoulas Set 1 O/U 9.5 | 50% YES | 50% NO |
| Foggia: Tatiana Pieri vs Sofia Costoulas Set 1 O/U 10.5 | 16% YES | 84% NO |
Tatiana Pieri and Sofia Costoulas are scheduled to meet in the Foggia tournament on 3 June 2026. The match was originally set for 5:00 AM ET. The current order book on Polymarket reflects a near-even split, with the crowd-implied probability at 51% for Pieri, suggesting marginal confidence in her advancement. This tight pricing indicates limited historical data or comparable precedent between these two players at this venue, typical for lower-tier WTA qualifying or ITF-level tournaments where match records are sparse and recent form carries outsized weight.
Both players' recent performance trajectories and ranking movements will be the primary catalysts shaping probability shifts before the settlement window closes on 10 June. Traders should monitor official WTA or ITF draw confirmations, injury announcements, or withdrawal notices in the days preceding the match. Court conditions at Foggia—surface type, weather forecasts for early June, and any scheduling delays—can shift expectations materially. The seven-day resolution buffer means matches delayed beyond 9 June without completion trigger a 50-50 settlement, creating tail-risk pricing pressure as the deadline approaches.
The 51% YES price suggests the market has found rough equilibrium on limited information. Watch for late-stage draw updates or player statements that might reveal fitness concerns or recent match results that would justify sharper probability movement in either direction.
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 "Foggia: Tatiana Pieri vs Sofia Costoulas" 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.
$1K in lifetime turnover and $18K of resting liquidity puts this market in the below the median by volume for tennis contracts on PolyGram. Order-book depth is modest — expect a couple of cents of slippage on $1k+ trades.
Last 24 hours alone saw $1K 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 10 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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