Canadian Open, Qualification: Jacob Fearnley vs Sebastian Ofner

Platform comparison

Market context

Polymarket is pricing Jacob Fearnley vs Sebastian Ofner at **100% YES** on the contract tied to Fearnley advancing, which is the ceiling you would expect when the result is effectively treated as locked in and the market is waiting on final settlement. On Polymarket, traders are not buying the tennis result directly; they are holding USDC-backed positions on Polygon via conditional tokens, so the key question is whether the match has produced a clear winner within the settlement rules, rather than how the players looked in a vacuum.

The reference point for reading a maxed-out price is usually either a result that has already been posted by reliable score providers or a market that is so close to completion that there is no meaningful path to a different outcome. In this case, live score and tournament pages show the qualifying match at Montreal on 1 August 2026, and multiple result feeds indicate Fearnley as the winner over Ofner, which is consistent with a contract that has moved to full conviction rather than simple pre-match probability.[1][3][6][14] Ofner is listed around ATP No. 124 and Fearnley around ATP No. 110, but once the result is in play, ranking matters less than whether the event was completed in line with the market rules.[1][14]

For traders, the practical catalysts are confirmation from the tournament draw/result page, any official scoreboard updates, and whether the match was completed without a retirement, abandonment, or scheduling disruption inside the seven-day window. The National Bank Open results page and live match feeds are the main things to watch because Polymarket settlement will follow the actual match outcome, while a no-contest or unresolved delay would push the contract towards the 50-50 fallback.[1][3][6] On-chain, the position only settles once the oracle-relevant result is final, so even a market trading at 100% can still depend on administrative confirmation rather than price discovery alone.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

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

Is this market available outside the US?

Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.

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 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.