Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Completed Match | 100% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set 1 O/U 8.5 | 100% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Total Sets: O/U 2.5 | 100% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set 2 Winner | 100% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Match O/U 21.5 | 100% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Match O/U 22.5 | 100% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Match O/U 23.5 | 100% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari | 0% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set 1 Winner | 0% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set 2 O/U 8.5 | 0% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set Handicap +/-1.5 | 0% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set 1 O/U 9.5 | 0% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set 2 O/U 9.5 | 0% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set 1 O/U 10.5 | 0% |
| Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari Set 2 O/U 10.5 | 0% |
Market context
The upcoming Wimbledon WTA Round 2 clash pits Kamilla Rakhimova against Maria Sakkari, a match originally slated for 6:00 AM ET on July 1 but now confirmed for 9:20 AM ET on July 2, 2026. Despite the prediction market showing a 0% implied probability for Rakhimova advancing, external models assign her a 38.8% to 39% win chance, with Sakkari favoured at 61.2% to 63%[1][3]. This stark divergence between the on-chain 0% signal and traditional sportsbook odds mirrors historical cases where liquidity gaps or whale manipulation created artificial pricing dislocations in crypto-linked prediction markets, often resolving rapidly once spot exchange data aligns with funding rates.
Traders must monitor Rakhimova’s recent form, specifically her tendency to drop the opening set in five consecutive matches, alongside the confirmed head-to-head record where Sakkari leads two wins to zero[6][7]. Any delay beyond the seven-day settlement window or a cancellation would trigger the 50-50 resolution clause, a dependency that ties directly to USDC settlement mechanics and BTC macro volatility if weather disrupts the London venue. Recent WTA coverage confirms the match is active for Round 2, but traders should watch for official tournament announcements regarding potential delays, as these events often correlate with sudden shifts in whale flows on crypto exchanges[8]. The market’s current pricing suggests a need to verify if the 0% figure reflects a genuine consensus or a temporary liquidity freeze before the on-chain price corrects to match the 61% Sakkari win probability seen on FanDuel and Dimers[1][5].
Methodology
This page reads Wimbledon WTA: Kamilla Rakhimova vs Maria Sakkari 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 alongside for venue context. 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
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
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