Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
70% | 30% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
70% | 30% | 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 |
|---|---|
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set 1 O/U 8.5 | 70% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala | 60% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set 1 Winner | 56% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set 2 Winner | 55% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Match O/U 21.5 | 53% |
| Completed Match | 50% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set 2 O/U 8.5 | 50% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set 2 O/U 9.5 | 50% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set 2 O/U 10.5 | 50% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set 1 O/U 9.5 | 48% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Match O/U 22.5 | 47% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Match O/U 23.5 | 45% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Total Sets: O/U 2.5 | 42% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set Handicap +/-1.5 | 38% |
| Mubadala Citi DC Open: Jessica Pegula vs Alexandra Eala Set 1 O/U 10.5 | 25% |
Market context
The final between Jessica Pegula and Alexandra Eala is a straight winner-take-all tennis contract, but the market also has a clear fallback: if the match is not completed in time or is abandoned under the rules, it settles 50-50 rather than to either player. With crowd-implied probability around 60% for Pegula, the price is consistent with the American’s higher ranking, greater tour experience and the fact she led the head-to-head 1-0 after their three-set hard-court meeting in Miami in 2025.[2][16][19]
Comparable cases suggest the current price is not extreme for a WTA final where one player has the better baseline record but the underdog has already shown she can stretch the favourite on hard courts. Pegula’s Miami win went to three sets, which matters because close matchups raise the value of first-set swings, medical time-outs and weather-related delays in a settlement structure that depends on a definitive winner before the 7-day cutoff.[1][16] In prediction-market terms, that makes the contract more sensitive than a simple moneyline to schedule risk and completion risk, not just to on-court strength.
The main catalyst is whether the final actually starts on time, since WTA’s schedule has listed it for Sunday 2 August at noon, while other listings have shown later timing; any change can matter for a USDC-settled market that prices on-chain against real-world resolution risk.[2][19] Traders should also watch for late withdrawals, rain delays at Rock Creek Park, and any sign that the final is moved or unfinished, because those outcomes can push the contract towards the 50-50 fallback even if one player is favoured on the exchange. Macro is secondary here, but BTC and ETH risk sentiment can still spill into broader crypto bid tone, nudging conditional flows in small-event markets.
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 — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
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.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- 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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