Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
59% | 41% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
59% | 41% | 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: Jacob Fearnley vs Jakub Mensik Match O/U 21.5 | 59% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set Handicap +/-1.5 | 56% |
| Completed Match | 50% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set 1 Winner | 50% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set 1 O/U 8.5 | 50% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set 2 O/U 8.5 | 50% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set 2 O/U 9.5 | 50% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set 2 O/U 10.5 | 50% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Total Sets: O/U 2.5 | 45% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set 2 Winner | 43% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Match O/U 22.5 | 43% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Match O/U 23.5 | 41% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik | 18% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set 1 O/U 9.5 | 0% |
| National Bank Open: Jacob Fearnley vs Jakub Mensik Set 1 O/U 10.5 | 0% |
Market context
Jacob Fearnley and Jakub Mensik are due to meet at the National Bank Open in a hard-court match that has not yet produced a winner, with the market pricing Fearnley at 18% against the crowd-implied side. The setup is straightforward: Mensik brings the stronger ranking profile and the better season-long hard-court record, while Fearnley’s path into this spot has been more uneven, which helps explain why the underdog side is the shorter price in the market.[1][2][8]
The historical frame is thin because they have no previous ATP head-to-head, so traders are leaning on comparable form rather than direct matchup evidence.[2][12][13] Mensik has posted a 34-20 record over the past 52 weeks and a 16-7 mark on hard courts this season, while Fearnley’s last-52-weeks record is around break-even and his ATP-level hard-court results remain weaker than his clay numbers.[1][3][16] Fearnley has also struggled against elite opposition, going 1-6 against top-20 players in the last year, which matters in a field where Mensik has already shown he can beat higher-ranked opponents.[1][3]
The main catalysts are simple: confirmed line-ups, any late injury or withdrawal news, and whether the match schedule holds on the intended day, because a postponement beyond seven days would force the market to 50-50 under the rules. Flashscore’s live listing and other match trackers currently show the fixture as active and unsolved, with no reported head-to-head history, so any change in official tournament scheduling or a medical timeout that prevents completion would be the most relevant near-term dependency for settlement.[3][9][15]
Methodology
Sports-specific comparison page for National Bank Open: Jacob Fearnley vs Jakub Mensik. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- 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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