National Bank Open: Arthur Fils vs Cameron Norrie

Platform comparison

Market context

Arthur Fils is scheduled to play Cameron Norrie in the National Bank Open, and the current crowd-implied price of **69%** for Fils is broadly in line with the wider market. Bookmakers and projection sites in the search results cluster around Fils in the mid-to-high 60s or low 70s, with Tennis.com listing him at **68%** and Polymarket’s own team market showing roughly **71%**[7][3].

For a programmatic read, that means the line is not signalling a major mismatch; it is a moderate Fils lean that still leaves room for drift if the draw, court assignment, or live availability changes. Comparable pricing sources also have Fils favoured by about **-250 to -260** on the moneyline, which is consistent with a favourite but not a lock[2][17]. Historical head-to-head or Elo-style models in the results likewise point towards Fils, with one model at **73.9%** and another at **67%**, so the current market sits inside the same band rather than at an outlier level[5][15].

The key catalysts are straightforward: official order-of-play confirmation, any delay to the start time, and whether the match is actually completed within the settlement window. The match was listed for **7:30 PM ET** on 8 August, and multiple listings place it on Centre Court in Montréal, so any schedule slippage matters for execution and for markets with cancellation or abandonment clauses[2][4][7]. Reuters reported on 7 August that the National Bank Open had been disrupted by weather-related delays in Montréal, which is relevant because delay risk can affect whether a match starts on time or is pushed far enough to create settlement edge cases[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Arthur Fils vs Cameron Norrie 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 Kalshi Fees, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

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 Kalshi Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.