Resolution criteria on PolyGram: This market refers to the tennis match between Danka Kovinic and Adelina Lachinova in the Istanbul, originally scheduled for May 5, 2026 at 4:00AM ET. This market will resolve to 'Danka Kovinic' if Danka Kovinic advances against Adelina Lachinova. This market will resolve to 'Adelina Lachinova' if Adelina Lachinova advances against Danka Kovinic. 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
| Istanbul: Danka Kovinic vs Adelina Lachinova | 0% YES | 100% NO |
| Istanbul: Danka Kovinic vs Adelina Lachinova Match O/U 22.5 | 0% YES | 100% NO |
| Istanbul: Danka Kovinic vs Adelina Lachinova Match O/U 23.5 | 0% YES | 100% NO |
| Istanbul: Danka Kovinic vs Adelina Lachinova Set 1 O/U 8.5 | 100% YES | 0% NO |
| Istanbul: Danka Kovinic vs Adelina Lachinova Total Sets: O/U 2.5 | 0% YES | 100% NO |
| Istanbul: Danka Kovinic vs Adelina Lachinova Set 1 O/U 9.5 | 100% YES | 0% NO |
| Istanbul: Danka Kovinic vs Adelina Lachinova Set 1 O/U 10.5 | 100% YES | 0% NO |
| Istanbul: Danka Kovinic vs Adelina Lachinova Match O/U 21.5 | 0% YES | 100% NO |
A Women's Tennis Association match between Montenegrin player Danka Kovinic and Adelina Lachinova is scheduled for May 5, 2026, in Istanbul. The current order book on Polymarket reflects a 0% implied probability for Kovinic's advancement, suggesting the market is pricing either overwhelming confidence in Lachinova or significant uncertainty about match execution. With settlement occurring by May 12, 2026, traders have a seven-day window to assess whether the match materialises and, if contested, which player prevails.
Kovinic, ranked around 80th on the WTA tour, has competed consistently at mid-tier events and qualifiers over recent seasons, whilst Lachinova remains a developing player with limited top-tier exposure. Historical precedent from similar WTA matches at this ranking level shows competitive variance—upsets occur in roughly 15–20% of encounters between players separated by 30+ ranking positions. The extreme probability skew toward Lachinova suggests either late-stage ranking shifts, recent form data, or head-to-head history not yet reflected in public rankings.
Traders should monitor official WTA scheduling confirmations and any withdrawal announcements through early May, as Istanbul events occasionally face logistical delays. Recent injury reports or qualifying-round results will clarify both players' fitness and momentum entering the match. The settlement window's seven-day buffer accommodates typical rescheduling; however, cancellation without rescheduling would trigger a 50-50 resolution, creating asymmetric payoff structures worth evaluating against current odds.
The Istanbul Canal is a project for an artificial sea-level waterway planned by Turkey in East Thrace, connecting the Black Sea to the Sea of Marmara, and thus to the Aegean and Mediterranean seas. The Istanbul Canal would bisect the current European side of Istanbul and thus form an island between Asia and Europe. The new waterway would bypass the current B
The Istanbul–Ankara railway is a 576.6 km (358.3 mi) long electrified railway in Turkey. The line connects Turkey's largest city, Istanbul, to the capital and second largest city, Ankara; making it one the busiest railways in the country in terms of passenger and freight rail traffic. Beginning at Haydarpaşa station in Istanbul and terminating at Ankara rail
The Ankara–Istanbul high-speed railway, is a 561 km (349 mi) long high-speed railway linking Ankara and Istanbul in Turkey. The railway runs mostly parallel to the Istanbul-Ankara railway and passes through some of Turkey's most urbanized areas. The line hosts high-speed YHT train service with a maximum operating speed of 250 km/h (160 mph).
The Istanbul suburban railway, locally referred to as B1, was an important rail line in Istanbul, Turkey. It was operated by the Turkish State Railways and was one of Istanbul's two commuter rail lines. Carrying an average of 22,200 passengers daily, it was the second-busiest commuter railway in Turkey, after the Haydarpaşa suburban.
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 "Istanbul: Danka Kovinic vs Adelina Lachinova" 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.
$64K in lifetime turnover and $0 of resting liquidity puts this market in the above the median by volume for tennis contracts on PolyGram. Order-book depth is thin — large orders may need to be split across the book or executed as limit orders.
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 12 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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