National Bank Open: Sho Shimabukuro vs Marin Cilic

Platform comparison

Market context

The match between Sho Shimabukuro and Marin Čilić was scheduled for the National Bank Open in Montreal, and the live listings show it as a hard-court meeting originally set for 2 August.[2][6][7] With the market sitting at 0% YES, the crowd is effectively pricing in that Shimabukuro does not advance, which is consistent with the lack of a head-to-head history and Čilić’s much larger ATP résumé.[4][5][16]

The comparison to use here is not a direct past meeting, but broader profile and surface form. Published H2H pages say the pair have not played each other before, while Čilić is listed with a career record above 600 wins and Shimabukuro with a far smaller sample size, which is the sort of mismatch that typically keeps pre-match prices anchored unless the draw or fitness picture changes.[4][5][16] On hard courts, Čilić’s experience is a clear reference point, and Shimabukuro has spent much of his recent season at the challenger/ATP-qualifying level rather than deep runs in Masters events.[1][5][6]

For traders, the main catalysts are simple: official match status, any schedule change on Rogers Court, and whether the contest is actually played within the settlement window.[2][7][13] The market rules also matter because a cancellation, no-contest, or a delay beyond seven days would push this to 50-50, so confirmation from tournament scheduling feeds and live scoreboards is the key near-term dependency rather than a broader form narrative.[2][6][11][12]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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 Prediction Today. 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.

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.