Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 Winner | 100% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova | 72% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 22.5 | 58% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set Handicap +/-1.5 | 51% |
| Completed Match | 50% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 21.5 | 50% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 8.5 | 50% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 9.5 | 50% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 O/U 10.5 | 50% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Match O/U 23.5 | 49% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Total Sets: O/U 2.5 | 45% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set Handicap +/-1.5 | 41% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 2 Winner | 40% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 8.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 9.5 | 0% |
| National Bank Open: Liudmila Samsonova vs Barbora Krejcikova Set 1 O/U 10.5 | 0% |
Market context
Live Polymarket data shows 100% YES probability for National Bank Open: Liudmila Samsonova vs Barbora Krejcikova. This market refers to the tennis match between Liudmila Samsonova and Barbora Krejcikova in the National Bank Open, originally scheduled for August 6, 2026 at 10:00AM ET. This market will resolve to …
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
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Polymarket Review UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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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