National Bank Open: Adam Walton vs Jenson Brooksby

Platform comparison

Market context

Polymarket is pricing Adam Walton vs Jenson Brooksby at **0% YES** today, so the contract is effectively saying the market does not expect a clean settlement to either player from the scheduled match outcome. On Polymarket, traders post and buy USDC on Polygon, and the contract resolves through conditional tokens tied to whether Walton advances, Brooksby advances, or the match falls into one of the special cases that settle 50-50.

That reading is useful because the comparable pricing in the broader market was much closer to a coin flip before play, with model and sportsbook estimates putting Brooksby slightly ahead rather than overwhelming favourite. Dimers and other odds boards had Brooksby around 54-55% and Walton around 45-46%, while Kalshi was quoting 45% for Walton and 55% for Brooksby, which makes a 0% Polymarket print look more like a contract-state or settlement concern than a pure tennis view.[2][4][12][15] For a trader, the key point is that this market does not just hinge on who is better; it also depends on whether the match is actually completed inside the settlement rules.

The main catalysts are straightforward: official tournament scheduling, whether the match has already started, and any postponement or retirement updates from the National Bank Open feed. If the match was not played as scheduled, or is pushed beyond the seven-day window without a winner, the market can still resolve 50-50 under the rules rather than to either player. FanDuel, Flashscore and other books/listings still show the pairing as a standard ATP Montreal/Canadian Open contest, so the practical risk to watch is last-minute rescheduling rather than a drastic shift in on-court probability.[1][3][11]

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 Polymarket Scam?, which mirrors the Polymarket order book directly.

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

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 Polymarket Scam?. 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.

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Scam? trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.