Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Prediction Today) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova | 100% |
| Completed Match | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 Winner | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 Winner | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set Handicap +/-1.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 8.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 9.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 10.5 | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 8.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Total Sets: O/U 2.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 21.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 9.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 22.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set Handicap +/-1.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 10.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 23.5 | 0% |
Market context
Liudmila Samsonova and Barbora Krejcikova are on the books for a second-round match at the National Bank Open in Toronto, with live listings placing it on Court 1 and indicating the contest is still upcoming or just about to start. That matters for a market already priced at 100% YES: the main near-term risk is no longer who is favoured, but whether the match is actually completed within the settlement window and without an administrative wrinkle.[1][2][9]
The historical frame is fairly straightforward. Samsonova has the cleaner recent edge in this pairing, including a straight sets win in Strasbourg in May 2024 after a long three-set match, and she also reached the National Bank Open final in 2023; Krejcikova, by contrast, has had a poor record at this event and has not won a main-draw match here in five previous appearances, according to one match preview.[2][17][18] That said, different stat feeds disagree on the exact head-to-head tally, so traders should treat the directional edge rather than the precise win-loss count as the useful signal.[3][15][16]
The immediate catalysts are operational rather than form-based: the confirmed match time, court assignment, and any delay notices from the tournament or broadcasters. Tennis.com, Sky Sports and live-score pages all still list the fixture as scheduled, so a late cancellation, postponement, or retirement would be the main event risk to the current settlement path.[1][6][9] If play starts normally, the market should track the on-court winner; if the match is not played at all or slips beyond the window without a result, the fallback 50-50 outcome becomes relevant under the rules.
Methodology
We track National Bank Open: Liudmila Samsonova vs Barbora Krejcikova 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
Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.
Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.
UK Frequently Asked Questions
- 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.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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