National Bank Open: Jaume Munar vs Alexander Blockx

Platform comparison

Market context

Jaume Munar meets Alexander Blockx in the National Bank Open second round, and the market’s **50%** crowd-implied probability is essentially a coin flip rather than a clean read on form. Munar is the more established ATP player, listed around **No. 43** in live rankings, while Blockx is shown around **No. 32** in live rankings and enters as a younger, less proven name at this level.[1][11] That split helps explain why consensus is near even: Munar brings experience, but Blockx’s ranking and the market chatter give the underdog a credible case if the surface and conditions reward first-strike tennis.[1][6]

For handicapper framing, the main historical comparison is a ranked veteran against a lower-profile player who may still be underpriced if the market leans too heavily on reputation. In these ATP 1000 second-round spots, the favourite is often the player with more tour stability, but the value can sit with the side getting less attention when the gap in ranking is modest and the match is likely to be decided by a few service games. Sports previews have already split on the matchup, with at least one recent piece tipping **Blockx** outright, which suggests the underdog case is not fringe.[6]

The main catalysts are scheduling and any tournament-side adjustments, because the market only resolves to a side if the match is actually completed within the settlement window; otherwise it can fall back to **50-50** under the rules. The official match listing places Munar vs Blockx in Montréal’s second round, and contemporaneous live entries show it as an active scheduled contest rather than a finished result.[2][15] Traders should watch for court-order changes, late withdrawals, weather delays, or a start that does not lead to completion, because those are the practical routes to a non-decision.[2][15]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews National Bank Open: Jaume Munar vs Alexander Blockx across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Who Will Win 2026, which mirrors the Polymarket order book at 0% fees.

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.

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.