Granby: Nicolas Arseneault vs Andres Martin

Platform comparison

Market context

Nicolas Arseneault faces Andres Martin in the opening round of the Granby Challenger on 13 July 2026, with the market currently pricing a 25% chance for the Canadian to advance. This low implied probability reflects Arseneault’s status as a significant underdog; at 19 years old, he holds a career-high ATP ranking of 491 but is currently listed near 674, whereas Martin is a seasoned veteran with a much higher standing and extensive Challenger experience [2][4].

Historically, such ranking disparities at the Challenger level often produce sharp value spots for the underdog only when the favourite shows fatigue or recent form issues, yet here the consensus heavily favours Martin. Comparable cases from 2024–2025 Granby events show that players ranked below 500 rarely overcome opponents ranked inside the top 300 without a specific catalyst, meaning the 25% figure may actually be generous unless Arseneault has hidden momentum from his recent Little Rock appearance where he lost 2–0 to Henry Searle [1].

Traders should monitor the official ATP Tour draw confirmation and any pre-match injury announcements for Martin, as his schedule density in July could be a vulnerability. The match is set for 14:00 UTC, and any delay beyond seven days without a winner triggers a 50–50 settlement, a risk that must be weighed against the current pricing [5]. No recent news suggests Arseneault has surged in form, so the contrarian angle remains thin unless Martin’s fitness is questioned before the toss.

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 Who Will Win, which mirrors the Polymarket order book directly.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

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 Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Who Will Win trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.