Resolution criteria on PolyGram: This market refers to the tennis match between Mirra Andreeva and Fiona Ferro in the Roland Garros WTA, originally scheduled for May 24, 2026 at 5:00AM ET. This market will resolve to 'Mirra Andreeva' if Mirra Andreeva advances against Fiona Ferro. This market will resolve to 'Fiona Ferro' if Fiona Ferro advances against Mirra Andreeva. 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.
Real-money prediction markets aggregate live odds from thousands of traders, surfacing a sharper probability than any single forecast. Odds will populate live once the order book fills with 7 days to resolution, well inside the window where catalysts move price most, backed by $414K of resting liquidity.
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
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro | 100% YES | 0% NO |
| Completed Match | 100% YES | 0% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Set 1 Winner | 100% YES | 0% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Set 1 O/U 8.5 | 100% YES | 0% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Set 1 O/U 9.5 | 0% YES | 100% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Match O/U 21.5 | 0% YES | 100% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Match O/U 22.5 | 0% YES | 100% NO |
| Roland Garros WTA: Mirra Andreeva vs Fiona Ferro Match O/U 23.5 | 0% YES | 100% NO |
Mirra Andreeva faces Fiona Ferro in the Roland Garros women's draw, with the match originally scheduled for 24 May 2026. The current order book on Polymarket reflects a 100% implied probability for Andreeva, indicating the market has priced in an overwhelming expectation of her advancement. This extreme pricing typically emerges when one player holds a decisive ranking advantage, recent form edge, or head-to-head record that traders regard as decisive.
Andreeva, the Russian teenager who reached the Australian Open semi-finals in January 2026, has established herself as a rising force on the WTA circuit with improved clay-court performances. Ferro, a French player competing on home soil, has historically struggled to maintain consistency at the highest levels despite occasional strong performances. Historical precedent suggests markets occasionally overshoot when pricing youth and momentum against experience and home-court advantage, though Andreeva's trajectory has proven difficult to fade.
Traders should monitor several developments before settlement on 31 May. Any withdrawal announcements from either player, changes to the Roland Garros draw, or weather disruptions affecting the clay courts could trigger market repricing. Recent injury reports or late-stage form shifts—particularly if Ferro demonstrates unexpected sharpness in qualifying rounds—may challenge the current consensus. The settlement window extends seven days beyond the scheduled match date, providing buffer for delays, though the current 100% reading suggests the market has already discounted most contingency scenarios.
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.
For this market, the resolution date is 31 May 2026. A UMA proposer can submit the outcome from that moment; the two-hour dispute window closes at , and assuming no counter-claim is staked, winning USDC clears to trader balances by approximately .
If a dispute is filed inside the two-hour window, the outcome escalates to UMA token-holder voting, which extends settlement by roughly 48 hours. Because this market resolves from a publicly verifiable feed (https://www.wtatennis.com/scores), the probability of dispute is materially lower than the overall 0.5% PolyGram baseline — most disputes occur on markets with ambiguous wording or non-public resolution sources.
Withdrawal pace from your PolyGram balance is non-custodial and immediate — once payout clears, funds are yours to send to any Polygon wallet you control. Funds clear directly to your in-app USDC balance on Polygon. Withdrawals are non-custodial: send to any address you control, typical confirmation under 30 seconds, gas paid in USDC if you'd rather not hold MATIC.
Minimum order size on PolyGram is $1.00, with no maximum cap aside from available book depth. Orders route into Polymarket's on-chain CLOB on Polygon; the matching engine pairs YES buyers with NO buyers atomically — every executed trade is settled on-chain with no counterparty risk. For "Roland Garros WTA: Mirra Andreeva vs Fiona Ferro", order-book behaviour for this market reflects the underlying volatility of the outcome — patient limit orders typically fill closer to mid than market orders.
The trade ticket includes a slippage box (default 2%, configurable 0.1%-10%) that caps the worst-case entry price. Your maximum loss is your stake — winning YES (or NO) shares pay $1.00 each at resolution. With this market's current book depth ($414K of resting liquidity), a $500 order should fill with single-cent slippage at the displayed mid-price.
PolyGram charges 0% house edge — no spread mark-up, no rake on winnings, no withdrawal fees beyond network gas. The platform earns exclusively from optional features (copy-trade boosts, advanced order types, the yield vault on idle USDC); the trading surface itself is at-cost.
The mechanics for trading "Roland Garros WTA: Mirra Andreeva vs Fiona Ferro" 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.
$227K in lifetime turnover and $414K of resting liquidity puts this market in the top 10% by volume for tennis contracts on PolyGram. Order-book depth is exceptional — among the deepest order books in the category.
Last 24 hours alone saw $225K 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 31 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. For "Roland Garros WTA: Mirra Andreeva vs Fiona Ferro", the considerations above apply directly — Trade size should reflect the binary nature of the payoff: even a 70% probability event resolves NO 30% of the time, so any single position can lose 100% of staked capital.
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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