National Bank Open: Juncheng Shang vs Andrey Rublev

Platform comparison

Market context

The market has been steady in the last 24-48 hours, with the crowd still pricing Juncheng Shang as a clear outsider at about 23% against Andrey Rublev. That lines up with bookmaker boards showing Rublev around 1.25-1.30 and Shang around 3.4-4.0, which implies a fairly one-sided baseline rather than a tight coin-flip.[1][15][17]

Recent comparable pricing also points the same way: independent previews and prediction markets have generally given Rublev roughly a three-to-one or better edge, while Kalshi has sat near 75% for Rublev and 25% for Shang. The historical read here is that Shang only gets market support if the matchup is delayed, reshaped by fitness concerns, or if early-set signals suggest Rublev is less secure than expected; otherwise the pre-match probability usually stays compressed against the underdog.[3][11][18]

For traders, the main catalysts are simple: official start-time confirmation, any weather-related delay in Montreal, and whether the match is played on schedule or slips past the market’s 7-day settlement window. Tournament listings have shown the second-round meeting on 4 August, but live timing has varied across operators, so any late court change, medical update, or walkover news would matter immediately because it affects both the winner side and the 50-50 fallback if the match is not completed in time.[2][4][13][16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Juncheng Shang vs Andrey Rublev 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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

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.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Today 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.