Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Prediction Market UK Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on Prediction Market UK → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on Prediction Market UK → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on Prediction Market UK → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on Prediction Market UK → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on Prediction Market UK → |
Live odds for Polymarket-based markets come from the Polygon order book. Non-Polymarket venues show attributes only; clicking any row opens the market on Prediction Market UK.
Active sub-markets
| Completed Match | 100% YES | 0% NO |
| Nottingham Open: Dayana Yastremska vs Tatjana Maria Set 1 Winner | 0% Yastremska | 100% Maria |
| Nottingham Open: Dayana Yastremska vs Tatjana Maria | 0% Dayana Yastremska | 100% Tatjana Maria |
| Nottingham Open: Dayana Yastremska vs Tatjana Maria Match O/U 21.5 | 0% Over | 100% Under |
| Nottingham Open: Dayana Yastremska vs Tatjana Maria Set 1 O/U 9.5 | 0% Over | 100% Under |
| Nottingham Open: Dayana Yastremska vs Tatjana Maria Set Handicap +/-1.5 | 100% Maria | 0% Yastremska |
Market context
The Nottingham Open, held annually on grass courts in the English Midlands, will feature a first-round encounter between Ukrainian player Dayana Yastremska and German veteran Tatjana Maria in June 2026. In prediction markets, a YES share represents a bet that Yastremska advances; a NO share bets on Maria's progression. The current 100% implied probability for YES suggests the market has priced in a decisive favourite, though this extreme reading warrants scrutiny given the inherent uncertainty in tennis matchups.
Yastremska, ranked substantially higher than Maria in recent seasons, has demonstrated consistent grass-court form at tier-two events. Maria, now in her late thirties, has maintained a touring presence through doubles and occasional singles runs, though her ranking has declined. Historical precedent shows that ranking-based predictions at Nottingham correlate strongly with outcomes, yet upsets occur in roughly 15–20% of matches between players separated by 100+ ranking positions. The 100% probability may reflect either algorithmic overconfidence or genuine certainty about Yastremska's entry status and fitness.
Traders should monitor official Nottingham Open draw confirmations and any late injury withdrawals in the week preceding 17 June. Grass-court conditions and weather patterns in the Midlands can favour different playing styles; Maria's slice-heavy game occasionally troubles younger, aggressive opponents on slower grass. The settlement window closes 24 June, allowing a seven-day buffer for rescheduling should rain or other disruptions occur. Any announcement of either player's withdrawal or a change to the draw would materially alter the market's current pricing.
Methodology
This page reviews Nottingham Open: Dayana Yastremska vs Tatjana Maria across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Prediction Market UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.
Resolution & payout
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
FAQ
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does it cost to trade on Prediction Market UK?
- Zero. Prediction Market UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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