Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) 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: Miomir Kecmanovic vs Arthur Rinderknech Set 1 Winner | 100% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set 1 O/U 8.5 | 100% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set 2 O/U 8.5 | 100% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set 1 O/U 9.5 | 100% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set 2 O/U 9.5 | 100% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set 1 O/U 10.5 | 100% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Match O/U 21.5 | 86% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Total Sets: O/U 2.5 | 75% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Match O/U 22.5 | 75% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Match O/U 23.5 | 75% |
| Completed Match | 50% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech | 47% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set Handicap +/-1.5 | 25% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set Handicap +/-1.5 | 1% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set 2 Winner | 0% |
| National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech Set 2 O/U 10.5 | 0% |
Market context
Based on real-money crowd forecasting, national bank open: miomir kecmanovic vs arthur rinderknech stands at 100% likelihood according to current market consensus. This market refers to the tennis match between Miomir Kecmanovic and Arthur Rinderknech in the National Bank Open, originally scheduled for August 6, 2026 at 10:00AM ET. This mark…
Methodology
This page reviews National Bank Open: Miomir Kecmanovic vs Arthur Rinderknech across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win, which mirrors the Polymarket order book at 0% fees.
Resolution & payout
At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.
On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.
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.
- 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.
- 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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