National Bank Open: Mariano Navone vs Arthur Fils

Platform comparison

Market context

Arthur Fils and Mariano Navone are set for a National Bank Open round-of-32 match in Montreal on hard court, with Fils the higher-ranked player and the market currently pricing Navone at about 24%. The opener matters because the market resolves on who advances, not on who is leading if the match is interrupted, so a pre-match model should weight both outright strength and the cancellation/delay rules rather than just live score.

Comparable ATP 1000 spots usually hinge on surface and fitness more than seeding alone. Navone’s profile is built more on clay, while Fils has the higher ceiling on hard courts, which helps explain why the crowd leans towards him despite his recent injury interruptions. Fils withdrew from Roland-Garros in May with a hip issue and has also had earlier back-related absences this year, so any programmatic approach should treat late physical updates as a material input rather than assuming a clean completion.

The main catalysts are the official order of play, any court or start-time shift, and any withdrawal notice before first ball. If the match is pushed back far enough, the 7-day settlement rule becomes relevant; if it is started but not finished, the advance decision decides the result, so bots and conditional orders should key off official draw progression rather than scoreboard snapshots alone. The tournament schedule page and same-day match listings are the cleanest trigger points for automated monitoring, since the market can flip on a walkover, retirement, or simple no-contest status.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Mariano Navone vs Arthur Fils 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

Where can I trade this market with the lowest fees?

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Do I pay tax on prediction market profits in the UK?

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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%.