Trade the outcome below — no house edge, instant USDC settlement on Polygon
Resolution criteria on PolyGram: This market refers to the tennis match between Mariano Navone and Jenson Brooksby in the Roland Garros ATP, originally scheduled for May 24, 2026 at 5:00AM ET. This market will resolve to 'Mariano Navone' if Mariano Navone advances against Jenson Brooksby. This market will resolve to 'Jenson Brooksby' if Jenson Brooksby advances against Mariano Navone. 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.
Real-money prediction markets aggregate live odds from thousands of traders, surfacing a sharper probability than any single forecast. Current odds favour the YES side at 98%, making this a high-confidence market with 6 days to resolution, well inside the window where catalysts move price most, backed by $112K 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 ATP: Mariano Navone vs Jenson Brooksby | 98% YES | 2% NO |
| Completed Match | 77% YES | 24% NO |
| Roland Garros ATP: Mariano Navone vs Jenson Brooksby Set 1 O/U 8.5 | 100% YES | 0% NO |
| Roland Garros ATP: Mariano Navone vs Jenson Brooksby Set 1 O/U 9.5 | 100% YES | 0% NO |
| Roland Garros ATP: Mariano Navone vs Jenson Brooksby Set 1 O/U 10.5 | 0% YES | 100% NO |
| Roland Garros ATP: Mariano Navone vs Jenson Brooksby Match O/U 36.5 | 50% YES | 50% NO |
| Roland Garros ATP: Mariano Navone vs Jenson Brooksby Match O/U 38.5 | 50% YES | 50% NO |
| Roland Garros ATP: Mariano Navone vs Jenson Brooksby Match O/U 40.5 | 50% YES | 50% NO |
Mariano Navone and Jenson Brooksby are scheduled to meet in the first or second round of Roland Garros in late May 2026. The current order book on Polymarket reflects an 86% implied probability for Navone's advancement, pricing Brooksby at 14%. This probability spread suggests the market views Navone as a clear favourite, though the specific round and seeding remain subject to draw confirmation closer to the tournament.
Navone, an Argentine left-hander, has built momentum on clay courts over recent seasons, whilst Brooksby, the American, has shown inconsistency across surfaces despite occasional deep runs in ATP events. Historical matchups between players of differing clay-court specialisation and consistency records typically see the clay-court specialist priced at a premium, particularly at Roland Garros. The 86% probability aligns with conventional expectations when a clay-court player faces an opponent with mixed-surface results.
Traders should monitor the official Roland Garros draw release, scheduled for late May, which will confirm the round and seeding. Injury announcements from either player's camp would materially shift the order book, as would recent form in the weeks preceding the tournament. Weather conditions at Roland Garros—particularly rain delays—could affect match scheduling and player fatigue. The settlement window closes 31 May 2026 at 09:00 UTC, allowing seven days beyond the scheduled date for completion; matches delayed beyond this window without a winner resolve to 50-50.
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.
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.atptour.com/en/scores/current), 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 ATP: Mariano Navone vs Jenson Brooksby", 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 ($112K 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 ATP: Mariano Navone vs Jenson Brooksby" 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.
$301K in lifetime turnover and $112K 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 $300K 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 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 ATP: Mariano Navone vs Jenson Brooksby", 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.
Explore more prediction market odds and trading opportunities on PolyGram: