National Bank Open: Nicolas Mejia vs Martin Landaluce

Platform comparison

Market context

Nicolas Mejia’s meeting with Martin Landaluce in Montréal is priced close to a coin flip on the prediction market, with the contract at 49% and Tennis.com’s projected winner model leaning the other way at 74% for Landaluce, so the main cross-platform split is between a market that is close to even and model-driven tennis previews that are materially more bullish on the Spaniard.[9][14] The live rankings also point in the same direction as the previews: Landaluce is ATP No. 63, while Mejia is No. 131.[1][3]

For context, the absence of any head-to-head record means traders are reading form and surface indicators rather than direct matchup history.[1][2] Landaluce has stronger tour-level credentials on paper, including a 14-11 record against players outside the top 100 this season and a 4-4 career mark in Masters first-round matches, whereas Mejia is still seeking his first main-draw win at a tour-level hard-court event and is 0-3 on that surface at that level.[1] Comparable cases in early-round ATP Masters events often stay volatile until line-ups and court assignment are confirmed, because younger, lower-profile entrants can move sharply on late news rather than on ranking alone.[1][14]

The main catalysts are straightforward: official order-of-play updates, whether the match starts on the scheduled hard court, and any delay that pushes it beyond the market’s seven-day settlement window, which would trigger the 50-50 fallback rather than a player win.[1] Because both players are already listed for the Round 1 Montréal match, the practical risk for traders is less about a new opponent and more about whether the match is actually staged as scheduled, or whether a suspension, walkover or cancellation alters resolution.[9][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 Best Prediction Markets. 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.

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.