Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Best Prediction Markets UK) Pick polygram.ink (preferred broker) |
77% | 23% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
77% | 23% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set 1 O/U 8.5 | 77% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Match O/U 21.5 | 56% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set 1 O/U 9.5 | 53% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set 2 O/U 8.5 | 51% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set 2 O/U 9.5 | 51% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set 2 O/U 10.5 | 51% |
| Completed Match | 50% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Match O/U 22.5 | 49% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set Handicap +/-1.5 | 48% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Match O/U 23.5 | 43% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Total Sets: O/U 2.5 | 39% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set 2 Winner | 35% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set 1 Winner | 32% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik Set 1 O/U 10.5 | 31% |
| National Bank Open: Botic van de Zandschulp vs Jakub Mensik | 28% |
Market context
Traders on decentralised prediction markets give 77% probability to national bank open: botic van de zandschulp vs jakub mensik. This market refers to the tennis match between Botic van de Zandschulp and Jakub Mensik in the National Bank Open, originally scheduled for August 10, 2026 at 10:00AM ET. This market will resolve to …
Methodology
We track National Bank Open: Botic van de Zandschulp vs Jakub Mensik 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.
UK Frequently Asked Questions
- 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 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.
- How fast are USDC deposits?
- Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
- What are the best prediction markets for UK traders in 2026?
- For UKGC-regulated markets: Betfair Exchange (sports, politics) and Smarkets (sports, politics, lower commission than Betfair). For broader global event prediction: Polymarket (deepest liquidity, 0% fee, USDC settlement). For US-regulated option: Kalshi (USD, limited UK payment options). Most serious UK traders use a combination of Betfair for regulated sports and Polymarket for broader markets.
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