Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
BTC Prediction Pick polygram.ink |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open on BTC Prediction → |
Polymarket polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open on BTC Prediction → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open on BTC Prediction → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open on BTC Prediction → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open on BTC Prediction → |
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 BTC Prediction.
Active sub-markets
| Nottingham Open: Maya Joint vs Yulia Starodubtseva Match O/U 21.5 | 100% Over | 0% Under |
| Nottingham Open: Maya Joint vs Yulia Starodubtseva Match O/U 22.5 | 100% Over | 0% Under |
| Nottingham Open: Maya Joint vs Yulia Starodubtseva Match O/U 23.5 | 100% Over | 0% Under |
| Nottingham Open: Maya Joint vs Yulia Starodubtseva Set 2 Winner | 0% Joint | 100% Starodubtseva |
| Nottingham Open: Maya Joint vs Yulia Starodubtseva Set 2 O/U 9.5 | 100% Over | 0% Under |
| Nottingham Open: Maya Joint vs Yulia Starodubtseva Set 2 O/U 10.5 | 100% Over | 0% Under |
Market context
The Nottingham Open grass-court tournament will host a first-round match between British player Maya Joint and Russian competitor Yulia Starodubtseva on 15 June 2026. Joint competes primarily on the ITF Women's Circuit and lower-ranked WTA events, whilst Starodubtseva has featured sporadically in WTA qualifying rounds. The 100% crowd-implied probability reflects either extremely high confidence in Joint's advancement or minimal liquidity depth on the contract—a common pattern in lower-tier tennis markets where limited trading activity concentrates positions among few participants. Grass-court form diverges sharply from hard-court rankings; both players' recent clay and hard-court records offer limited predictive value for performance on Nottingham's surfaces.
Historical resolution patterns for comparable WTA 250 first-round matches show cancellation risk peaks during June scheduling windows, particularly when weather disruptions or player withdrawals occur within 48 hours of match time. The settlement window extends to 22 June, allowing a seven-day buffer before forced 50-50 resolution. Traders should monitor official WTA draw confirmations and any injury announcements from either player's camp; Starodubtseva's recent tournament entries and ranking trajectory merit tracking via WTA official records. Grass-court preparation tournaments often see late withdrawals as players prioritise Wimbledon qualification rounds scheduled immediately after.
USDC settlement mechanics on btc-prediction.bet carry standard counterparty exposure tied to match-day liquidity conditions. Funding rates on BTC and ETH spot markets show no material correlation to lower-tier tennis outcomes, though extreme macro volatility occasionally triggers broader platform liquidity constraints that affect settlement speed rather than resolution accuracy.
Methodology
This page reads Nottingham Open: Maya Joint vs Yulia Starodubtseva on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed for comparison. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- Where can I trade this market with the lowest fees?
- On BTC Prediction, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- BTC Prediction is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.
- 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 BTC Prediction?
- Zero. BTC Prediction routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.
- 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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