Pronóstico: National Bank Open (Doubles): Jiang/Wu vs Mertens/Shnaider

Platform comparison

Market context

Polymarket is pricing this doubles contract at **0% YES**, which means the market is currently assigning no chance that Jiang/Wu are the advancing team unless trading changes before resolution. On Polymarket, the position is backed by USDC on Polygon and settles through conditional tokens, so the outcome is driven by whether the match is officially completed with a winner under the event rules, or instead falls into one of the market’s fallback outcomes such as a washout, tie, or long delay.[2][17]

For context, the live tennis listings show Mertens/Shnaider defeating Jiang/Wu 6-3, 6-3 in Toronto on outdoor hard courts, which explains why the contract is pinned at the floor if the on-chain market has already been brought into line with the finished result.[4][9] Comparable doubles markets in majors and WTA 1000 events typically reprice hard once the first set is over or a retirement risk appears, but they can also sit at zero when the underdog has already lost in straight sets and there is no live path back to the advancing side.[3][6]

The main things to watch are official draw updates, any score or status change from the event feed, and whether the match is recorded as finished, abandoned, or voided within the 7-day window in the settlement rules.[17] Tennis.com and ESPN both list the match alongside the rest of the National Bank Open schedule, while Sofascore logs the contest on 8 August on outdoor hard, so any discrepancy between live scoring, organiser records, and Polymarket’s event page is the practical trigger for traders checking whether the conditional tokens will resolve to Jiang/Wu, Mertens/Shnaider, or 50-50.[1][5][9]

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 Qué Es, 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

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.

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 Qué Es 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.