Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
70% | 30% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
70% | 30% | 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: Mariano Navone vs Arthur Fils Set Handicap +/-1.5 | 70% |
| Completed Match | 50% |
| National Bank Open: Mariano Navone vs Arthur Fils Set 2 O/U 8.5 | 50% |
| National Bank Open: Mariano Navone vs Arthur Fils Set 1 O/U 8.5 | 50% |
| National Bank Open: Mariano Navone vs Arthur Fils Set 1 O/U 9.5 | 50% |
| National Bank Open: Mariano Navone vs Arthur Fils Set 2 O/U 9.5 | 50% |
| National Bank Open: Mariano Navone vs Arthur Fils Set 1 O/U 10.5 | 50% |
| National Bank Open: Mariano Navone vs Arthur Fils Set 2 O/U 10.5 | 50% |
| National Bank Open: Mariano Navone vs Arthur Fils Match O/U 23.5 | 50% |
| National Bank Open: Mariano Navone vs Arthur Fils Match O/U 21.5 | 41% |
| National Bank Open: Mariano Navone vs Arthur Fils Total Sets: O/U 2.5 | 28% |
| National Bank Open: Mariano Navone vs Arthur Fils Set 2 Winner | 27% |
| National Bank Open: Mariano Navone vs Arthur Fils Match O/U 22.5 | 24% |
| National Bank Open: Mariano Navone vs Arthur Fils | 11% |
| National Bank Open: Mariano Navone vs Arthur Fils Set 1 Winner | 4% |
Market context
Mariano Navone against Arthur Fils is a hard-court meeting in Montreal, with the market leaning strongly towards Fils at 11% for Navone. The pricing matches the wider ranking and profile gap: Fils is the higher-ranked player and various pre-match models and odds screens give him roughly three-quarters or more win probability, while Navone’s stronger career results have generally come on clay rather than hard courts.[2][6][12]
The main historical reference point is their only prior meeting, which Navone won in straight sets on clay at the Prague Challenger in 2022.[1][5] That result matters, but the surface switch is significant: Navone’s hard-court record is much weaker than his clay record, and Fils has posted stronger overall hard-court numbers. Comparable previews also note that Fils has had a mixed hard-court summer against top-30 opposition, so the market should be read as favouring class and surface fit over the old head-to-head scoreline.[2][8]
For traders, the key catalysts are whether either player is carrying a late injury issue, whether the match stays on the original centre-court timetable, and whether any withdrawal or walkover news emerges before first serve. Flashscore and tournament listings still show the match as scheduled for 6 August at 16:30 UTC, while the market rulebook means a cancellation or a delay beyond seven days would push settlement to 50-50 rather than a normal result.[9][12][13]
Methodology
Sports-specific comparison page for National Bank Open: Mariano Navone vs Arthur Fils. 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.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- 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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