Resolution criteria on PolyGram: This market refers to the tennis match between Andrej Nedic and David Jorda Sanchis in the Istanbul, originally scheduled for May 23, 2026 at 7:00AM ET. This market will resolve to 'Andrej Nedic' if Andrej Nedic advances against David Jorda Sanchis. This market will resolve to 'David Jorda Sanchis' if David Jorda Sanchis advances against Andrej Nedic. 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.
Sports outcome markets settle within hours of game-end via the UMA optimistic oracle, with the YES/NO line refreshing in real time on every meaningful in-game event. 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 $406K 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
| Istanbul: Andrej Nedic vs David Jorda Sanchis | 0% YES | 100% NO |
| Completed Match | 100% YES | 0% NO |
| Istanbul: Andrej Nedic vs David Jorda Sanchis Total Sets: O/U 2.5 | 0% YES | 100% NO |
| Istanbul: Andrej Nedic vs David Jorda Sanchis Match O/U 21.5 | 0% YES | 100% NO |
| Istanbul: Andrej Nedic vs David Jorda Sanchis Set 1 O/U 8.5 | 100% YES | 0% NO |
| Istanbul: Andrej Nedic vs David Jorda Sanchis Set 1 Winner | 0% YES | 100% NO |
| Istanbul: Andrej Nedic vs David Jorda Sanchis Match O/U 22.5 | 0% YES | 100% NO |
| Istanbul: Andrej Nedic vs David Jorda Sanchis Set 1 O/U 9.5 | 100% YES | 0% NO |
Andrej Nedic and David Jorda Sanchis are scheduled to meet in a tennis match at Istanbul on 23 May 2026. The market currently reflects a 7% implied probability for Nedic's advancement, with that probability formed across Polymarket's order book as traders price the matchup. The settlement window closes on 30 May 2026, allowing a week beyond the scheduled date for the match to conclude before resolution triggers the tie-breaker clause.
Nedic, a Serbian player ranked outside the top 200, faces Jorda Sanchis, a Spanish competitor with comparable ranking status. Both players operate at a level where ATP 250 tournaments like Istanbul represent significant opportunities. Historical patterns in lower-ranked matchups show that crowd-implied probabilities below 10% typically reflect either a substantial ranking gap or recent form divergence; at this stage, the 7% figure suggests the market is pricing Nedic as a clear underdog based on available data. Comparable first-round encounters at this tournament tier have occasionally seen upsets when lower-seeded players carry momentum from qualifying rounds or recent Challenger circuit success.
Traders should monitor official Istanbul tournament draws and seeding announcements, which typically emerge two to three weeks before competition begins. Recent injury reports or withdrawal patterns from either player's recent Challenger or ATP events will inform whether the current probability reflects genuine form assessment or incomplete information. Weather conditions in Istanbul during late May occasionally affect scheduling, though the one-week buffer in the settlement window provides reasonable protection against minor delays.
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 30 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.
Sports markets on PolyGram historically have the fastest payout cycle — over 94% clear within four hours of game-end, with the remainder gated by overtime, weather, or referee review. 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 "Istanbul: Andrej Nedic vs David Jorda Sanchis", sports markets tend to see the tightest 1-2¢ spreads in the final hour before tip-off, widening rapidly the moment of any in-game news.
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 ($406K 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.
Other active prediction markets in the same category on PolyGram, ranked by trading volume:
The mechanics for trading "Istanbul: Andrej Nedic vs David Jorda Sanchis" are the same as any other PolyGram sporting 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.
$243K in lifetime turnover and $406K of resting liquidity puts this market in the top 10% by volume for sports contracts on PolyGram. Order-book depth is exceptional — among the deepest order books in the category.
Last 24 hours alone saw $243K 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 30 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 "Istanbul: Andrej Nedic vs David Jorda Sanchis", the considerations above apply directly — Sports outcome contracts are sensitive to single-event variance — a coin-flip game, a referee call, or an injured player can move the line 10-30¢ in seconds. Position sizing should reflect that variance rather than the expected value alone.
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: