National Bank Open: Alex Michelsen vs Francisco Cerundolo

Platform comparison

Market context

Polymarket is pricing the conditional token for Alex Michelsen to advance at about **59% YES**, which implies the market makes him a modest favourite over Francisco Cerundolo on USDC-settled Polygon. The contract pays out on the on-chain outcome of the match, with a 50-50 fallback if the fixture is not played, ends level, or is delayed beyond the stated window without a winner.

That pricing sits close to comparable tennis books and forecasters, rather than signalling a strong edge either way. Tennis.com’s projection has Michelsen at 60% to win, while one sportsbook line still makes him a -180 favourite, and their round-of-64 listing points to a hard-court match in Montreal.[4][7] The head-to-head is 0-0, so there is no direct matchup history to anchor the price, but Michelsen’s recent run at this tournament included a straight-sets win over Learner Tien and a previous upset of Lorenzo Musetti, which supports the idea that market participants are giving him credit for current form.[3][10][12]

For traders, the main catalysts are simple: the order of play, any delay from the National Bank Open schedule, and whether either player withdraws before first ball. The official tournament page listed Michelsen vs Cerundolo for 5 August on Court 9, while live match listings show the contest as upcoming and already placed in the second-round draw.[1][2][5][17] Because Polymarket resolves off the actual tennis outcome, any cancellation, no-show, or postponement beyond seven days can matter as much as performance, especially in a Masters 1000 event where weather, scheduling changes, and late fitness calls can still alter settlement.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track National Bank Open: Alex Michelsen vs Francisco Cerundolo 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

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

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.

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.

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.