National Bank Open: Juncheng Shang vs Andrey Rublev

Platform comparison

Market context

Polymarket is pricing Juncheng Shang to advance over Andrey Rublev at about **26%**, which is close to the rest of the market’s view and implies a clear Rublev favourite rather than a live coin-flip. On Polymarket, the contract settles in **USDC on Polygon** through conditional tokens, so the key question is simply whether Shang advances by the settlement rules; if the match is abandoned, tied, or delayed beyond seven days without a winner, the market resolves 50-50.

The current number sits in line with other tennis books and prediction venues, which generally show Rublev around the high-70s to low-80s in win probability and Shang in the low-to-mid 20s. That makes the 26% YES price look more like a modest underdog bid than a dislocation. The pair have already met once, with Rublev winning their head-to-head, and Shang’s price is also being held down by the gap in ranking and tour-level consistency implied by the broader market.

For traders, the main catalysts are straightforward: final start time, any last-minute withdrawal, and whether the match is completed within the event’s operational window. The National Bank Open’s official match page lists the fixture as a second-round meeting in Montréal, while betting boards and live listings show Rublev as the heavier favourite and some scheduling pages already reflecting the match time. A weather delay or a reworked order of play matters here because the market’s fallback rules are mechanical: no result within seven days, or a no-contest scenario, pushes the contract to an even split rather than a full-win settlement.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Juncheng Shang vs Andrey Rublev across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 PolyGram 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.