Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi Fees) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Place a position → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Place a position → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Place a position → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Place a position → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Place a position → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Contrexeville: Caroline Werner vs Dominika Salkova | 100% |
| Completed Match | 100% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set 2 Winner | 100% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set 1 Winner | 100% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set 2 O/U 8.5 | 100% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set Handicap +/-1.5 | 100% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set 2 O/U 9.5 | 100% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set 2 O/U 10.5 | 100% |
| Contrexeville: Caroline Werner vs Dominika Salkova Total Sets: O/U 2.5 | 0% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set 1 O/U 8.5 | 0% |
| Contrexeville: Caroline Werner vs Dominika Salkova Match O/U 21.5 | 0% |
| Contrexeville: Caroline Werner vs Dominika Salkova Match O/U 22.5 | 0% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set 1 O/U 9.5 | 0% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set Handicap +/-1.5 | 0% |
| Contrexeville: Caroline Werner vs Dominika Salkova Set 1 O/U 10.5 | 0% |
| Contrexeville: Caroline Werner vs Dominika Salkova Match O/U 23.5 | 0% |
Market context
The underlying event is the WTA Contrexeville clay-court match between Caroline Werner and Dominika Salkova, scheduled for 8:00 AM ET on 6 July 2026. This is their first head-to-head encounter, with no prior history between the players[1][2]. Both hold equal career win totals, yet the crowd-implied probability sits at 100% for Werner advancing, a figure that demands scrutiny when programmatically evaluating conditional orders or copy-trading bots.
Historically, 100% probabilities in debut matches often signal either a severe data gap or an unverified market manipulation, as seen in early WTA Challenger events where odds collapsed once live form emerged. In comparable cases, such as the 2024 Contrexeville 1/16-finals, initial certainty shifted dramatically after surface-specific performance data was incorporated into algorithmic models[7]. Traders should treat this as a high-risk signal rather than a guaranteed outcome, especially when deploying automated strategies.
Key catalysts include the official match start confirmation, any injury announcements, and real-time serving statistics, which are critical for dynamic pricing bots. Recent analysis from OLBG notes Salkova’s superior baseline power and serving, suggesting Werner may struggle unless she capitalises on luck or defensive resilience[8]. Monitor the WTA live feed for delays beyond seven days, as this triggers a 50-50 settlement, a dependency that must be coded into any conditional order framework.
Methodology
We track Contrexeville: Caroline Werner vs Dominika Salkova across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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 Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
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