National Bank Open: Shintaro Mochizuki vs Fabian Marozsan

Platform comparison

Market context

Polymarket is currently pricing this Montreal first-round contract at **0% YES**, which means the market is saying there is no live expectation of Shintaro Mochizuki advancing against Fabian Marozsan on the on-chain resolution path. On Polymarket, the position is not a cash bet but a **USDC**-denominated claim token settled on **Polygon** through conditional tokens, so the only thing that matters at expiry is whether the match result matches the market definition, or whether a fallback 50-50 resolution is triggered if the contest is not completed as specified.

That near-zero print is far below the pre-match tennis pricing elsewhere, where Marozsan has been the clear favourite. Tennis.com listed Marozsan as the projected winner at 63% and Mochizuki at 37%, while Dimers estimated Marozsan’s win chance at 61.8% against 38.2% for Mochizuki. Those kinds of gaps matter on prediction markets because a 0% quote usually reflects either a stale order book or a very strong assumption that the outcome is already effectively determined, rather than a balanced view of the matchup itself.[1][19]

The main catalysts are practical, not theoretical: whether the match is confirmed, starts on schedule, and is completed within the settlement rules. The scheduled window has already been framed as an August 3 round-of-128 match, and Tennis.com’s listing shows the fixture under ATP Montréal, so any official ATP or tournament scheduling update, walkover, retirement, postponement, or weather delay changes how the conditional token should be read at expiry.[1][3] If the match is not played at all, or slips beyond seven days without a winner, the market resolves 50-50 under the stated rules, so traders need to watch the tournament desk as closely as the scoreboard.

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 PolyGram, which mirrors the Polymarket order book directly.

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.

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.

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.

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.