National Bank Open: Duncan Chan vs Thiago Agustin Tirante

Platform comparison

Market context

Duncan Chan’s match with Thiago Agustin Tirante in the National Bank Open is the underlying event, but the contract is trading against a very different set of signals from the 0% crowd-implied price. Chan’s public record is still thin at ATP level: ESPN lists no ATP singles wins, while ITF- and challenger-level profiles show only a small sample of results and limited prize money, which usually leaves very little market evidence for a straight head-to-head price[1][2][14]. That profile makes a nil probability hard to justify on competitive grounds alone, because it implies the crowd is effectively treating Chan’s chance as negligible despite his being an active tour-level entrant[7][14].

Historically, markets on early-round ATP matches with one lightly proven player often swing on whether a draw-place-holder or qualifier gets a realistic path onto court, and on how books price unranked or low-volume players before line movement settles. Chan’s college and ITF results suggest a player with some hard-court experience but limited ATP exposure, so any consensus number from analysts or sportsbook screens would normally sit well above zero unless there is a confirmed mismatch in ranking, fitness, or entry status[3][5][9][16]. In that sense, 0% YES looks more like a liquidity artefact than a statement that the market believes Chan cannot win.

Traders should watch for three catalysts: official order-of-play updates, any withdrawal or replacement notices, and confirmation that the match actually starts within the settlement window. The market rules make the non-play outcome important: if the match is not played, or is delayed beyond seven days without a winner, it resolves 50-50 rather than to either side, so late scheduling changes matter almost as much as the on-court result. If a sportsbook posts a live moneyline or the ATP/organiser confirms the draw and court assignment, that will be the cleanest cross-check against the current prediction-market price[7][14].

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 vs Polymarket, which mirrors the Polymarket order book directly.

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 Kalshi vs Polymarket. 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.

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.