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: Marie Bouzkova vs Tereza Valentova Set 2 Winner | 100% Bouzkova | 0% Valentova |
| Nottingham Open: Marie Bouzkova vs Tereza Valentova Total Sets: O/U 2.5 | 0% Over 2.5 | 100% Under 2.5 |
| Nottingham Open: Marie Bouzkova vs Tereza Valentova Set 2 O/U 8.5 | 100% Over | 0% Under |
| Nottingham Open: Marie Bouzkova vs Tereza Valentova Set Handicap +/-1.5 | 100% Bouzkova | 0% Valentova |
| Nottingham Open: Marie Bouzkova vs Tereza Valentova Set 2 O/U 10.5 | 0% Over | 100% Under |
| Nottingham Open: Marie Bouzkova vs Tereza Valentova Set 1 O/U 10.5 | 0% Over | 100% Under |
Market context
The Nottingham Open, held annually on grass courts in the East Midlands, hosts a WTA 250 tournament that typically draws mid-ranked professionals and rising talent. Marie Bouzkova, a Czech player ranked in the 60–80 range, faces fellow Czech Tereza Valentova in what would be an early-round matchup on 15 June 2026. Both players compete regularly on the WTA circuit, though neither has secured major titles; Bouzkova has reached a handful of WTA finals whilst Valentova remains primarily a tour-level competitor. The 100% crowd-implied probability reflects confidence that the match will occur and produce a decisive winner rather than cancellation, tie, or extended delay beyond the seven-day buffer.
Historical precedent for WTA 250 grass-court events shows cancellation rates below 3% outside pandemic years, with weather delays on English grass typically resolved within 48 hours. Bouzkova holds a slight head-to-head advantage over Valentova based on recent tour records, though direct matchups between these players remain infrequent. Traders should monitor the WTA official schedule and Nottingham Open draw announcements through early June; any withdrawal due to injury or ranking changes would trigger immediate repricing. Grass-court form in the weeks preceding Nottingham—particularly results from qualifying rounds and lower-tier events—often signals readiness, as adaptation to fast courts requires specific preparation.
Settlement occurs on 22 June 2026 at 09:00 UTC, providing a one-week window post-scheduled date for match completion. USDC settlement on btc-prediction.bet means traders holding positions through resolution will receive stablecoin payouts without exposure to BTC or ETH volatility, isolating the contract to pure tennis outcome risk.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — are listed with their platform attributes, because they operate off-chain and a 1:1 comparison of contract mechanics isn't possible.
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.
- 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 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.
- Do I need to KYC for this market?
- Not under $1,500 of lifetime trading volume. Above that threshold, BTC Prediction triggers a quick verification flow that finishes in 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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