National Bank Open: Duncan Chan vs Thiago Agustin Tirante

Platform comparison

Market context

Polymarket is pricing this Duncan Chan vs Thiago Agustin Tirante contract at **0% YES** today, which means the market is treating a Chan advance as effectively price-empty even though the settlement still depends on the match being played and a winner being recorded. On Polymarket, traders are buying USDC-based conditional tokens on Polygon, so the key question is not the abstract quality of the players but whether Chan actually advances before the settlement window closes.

The historical read-through is thin on top-level evidence for Chan: his public ATP record shows no ATP Tour-level wins, while secondary tennis databases place him mainly in lower-tier and collegiate-level results, with a modest hard-court sample and mixed outcomes at that level.[1][4][5][6][10][11] That profile helps explain why the contract can sit at zero if the crowd sees Tirante as the more established professional, but it also means the market is being asked to price a match with limited direct head-to-head context rather than a long, well-covered rivalry. In practical terms, 0% YES often reflects either a strong expected mismatch or stale/illiquid pricing until the draw and order of play are confirmed.

The main catalysts are straightforward: official tournament scheduling, any change to the August 3 order of play, and whether the match is actually started and completed before the seven-day delay threshold described in the market rules. Because the settlement can flip to 50-50 if the match is cancelled, ends in a tie, or is left unresolved past that window, traders need to watch the event status rather than just pre-match listings. Recent player pages show Chan as an active 2026 entrant with current rankings and match listings, but no result source here confirms the specific Davis Cup, ATP, or qualifying pathway that would determine how likely the fixture is to go ahead as posted.[8][9][10]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Duncan Chan vs Thiago Agustin Tirante across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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