Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Review UK) Pick polygram.ink (preferred broker) |
76% | 24% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
76% | 24% | 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: Rafael Jodar vs Brandon Nakashima Set 1 O/U 8.5 | 76% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima | 67% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Set 1 Winner | 64% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Set 2 Winner | 62% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Match O/U 21.5 | 56% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Set 1 O/U 9.5 | 55% |
| Completed Match | 50% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Set 2 O/U 8.5 | 50% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Match O/U 22.5 | 50% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Set 2 O/U 9.5 | 50% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Set 2 O/U 10.5 | 50% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Match O/U 23.5 | 43% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Set Handicap +/-1.5 | 42% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Total Sets: O/U 2.5 | 40% |
| National Bank Open: Rafael Jodar vs Brandon Nakashima Set 1 O/U 10.5 | 28% |
Market context
The National Bank Open in Montreal hosts a first-round encounter between Spanish qualifier Rafael Jodar and American Brandon Nakashima on 12 August 2026. Jodar, ranked outside the top 100, typically competes on secondary tours; Nakashima, a former top-20 player, represents the higher-seeded competitor in most scenarios. The 67% implied probability favours Nakashima's progression, reflecting his established ranking and recent ATP-level consistency.
Historical matchups between established tour players and qualifiers at Masters 1000 events show qualifiers advance roughly 25–30% of the time, though this varies sharply by ranking differential and surface. Hard courts in North America have historically favoured players with consistent serve-and-volley patterns; Nakashima's game aligns with these conditions more reliably than Jodar's baseline-dependent style. Recent ATP qualifying data from 2025–2026 suggests players ranked 80+ who reach main draws at this level convert approximately one in four matches against top-50 opposition.
Traders monitoring this market should track official tournament scheduling updates through the ATP website and National Bank Open announcements, particularly weather delays or draw adjustments that could shift match timing beyond the 7-day resolution window. Nakashima's recent form—tournament results and injury status in the weeks preceding August—will be the primary catalyst affecting probability movement. Conditional order logic should account for the 50-50 tie-break clause; any match postponement beyond 19 August 2026 triggers automatic resolution regardless of completion status. Real-time odds feeds from major sportsbooks will signal sharp movement if either player withdraws or reports injury concerns.
Methodology
This page reviews National Bank Open: Rafael Jodar vs Brandon Nakashima 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 Polymarket Review UK, which mirrors the Polymarket order book at 0% fees.
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
- 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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