National Bank Open: Gabriel Diallo vs Kyrian Jacquet

Platform comparison

Market context

Polymarket is pricing Gabriel Diallo vs Kyrian Jacquet at **100% YES**, which on the platform means the contract is effectively at the top of the range for Diallo advancing, settled in **USDC** on **Polygon** through conditional tokens. The event itself is the National Bank Open first-round match in Montréal, originally listed for 2 August at 7:00pm ET, so the market is currently assuming a completed result rather than a cancellation or a delay that pushes settlement into the market’s fallback terms. [4][6][14]

That pricing sits above most comparable pre-match tennis views. Public odds and model outputs in the search set cluster much closer to a Diallo edge than a Jacquet one, with several sources putting Diallo around the mid-50s to low-60s in implied win probability and one bookmaker snapshot even making him the favourite, while another preview still picked Diallo to win in three sets. The two players had no prior ATP meeting before this draw, which limits head-to-head history as a guide and makes market pricing depend more on current form, surface assumptions and local conditions than on direct matchup data. [1][6][9][13][15][16]

For a trader, the main things to watch are whether the match was actually played, whether there is a winner on the official ATP scoreline, and whether any schedule change creates a settlement issue before the 7-day deadline. The Athletic listed the match on the tournament’s August 3 viewing schedule, while live scoring and betting pages show the fixture as a round-of-128 contest at centre court, so the key catalyst is simply confirmation that the result is official rather than postponed, abandoned or otherwise unresolved. [4][5][7][12]

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

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.

Do I need to KYC for this market?

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

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.