National Bank Open: Mariano Navone vs Arthur Fils

Platform comparison

Market context

The match between Mariano Navone and Arthur Fils in Montreal is priced as a straightforward hard-court contest, with the crowd leaning to Fils at 27% for Navone and roughly 73% for Fils in comparable pre-match models.[1][6][16] On profile, that makes sense: Fils has the stronger overall record and the better hard-court numbers, while Navone’s edge has historically come on clay rather than faster surfaces.[1] They have only one confirmed prior meeting, and Navone won that 2022 clash on clay in straight sets, so the head-to-head is informative but not decisive for this surface.[2][8]

For a trader using alerts, conditional orders, or a bot tied to live score feeds, the key is to distinguish a completed match from a suspended or unplayed one. The market rules mean a retirement after the match starts still resolves to the advancing player, while a cancellation, tie, or delay beyond seven days pushes it to 50-50, so automated logic should watch both the official ATP draw status and any score-state change.[1] The match was listed for Thursday evening in Montreal, with published start times around 16:30 local/18:30 UTC, so timing mismatches between feeds are the main operational risk.[11][12][14]

A useful programmatic approach is to key off three triggers: official order-of-play updates, first-ball-in-play confirmation, and retirement/withdrawal flags from the live score API. Recent match previews also show the same basic market structure and favourite/underdog split, with Fils generally treated as the shorter price and Navone as the live upset angle if the court slows or the match becomes physical.[4][16][17]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi Fees, which mirrors the Polymarket order book directly.

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.

FAQ

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 Kalshi Fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.