National Bank Open: Nicolas Mejia vs Martin Landaluce

Platform comparison

Market context

Nicolas Mejia and Martin Landaluce were set to meet in the National Bank Open first round, and the market’s **19% YES** implies the trade is pricing Mejia as a clear underdog. The historical frame is thin: the two had **no previous head-to-head**, so programmatic models usually lean on ranking, surface splits, and recent results rather than direct matchup data[2][10][13].

On the available numbers, Landaluce entered with the stronger ATP profile, sitting around **world No. 63** versus Mejia at roughly **No. 131** in the match listings[10][6]. That gap matters because Mejia was also reported to be making his first Masters main-draw appearance and to be **0-3** in tour-level hard-court main-draw matches, while Landaluce had a **14-11** record this season against players outside the top 100 and a **4-4** career record in Masters first rounds[2]. For a bot or spreadsheet workflow, that combination would usually keep the baseline probability anchored to Landaluce unless live information shifts the input set sharply.

The key catalysts are operational rather than narrative: confirmation that the match is actually played, any schedule movement inside the seven-day settlement window, and whether either player withdraws or the match is interrupted before completion under market rules. Tennis listings and live-score feeds should be polled for draw status and start-time changes, because a no-play outcome or excessive delay resolves this market to **50-50** rather than a player win[2][3][14].

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 Polymarket Review UK, 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

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.

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.