Granby: Nicolas Arseneault vs Andres Martin

Platform comparison

Market context

Nicolas Arseneault faces Andres Martin in the opening round of the Granby Challenger in Canada, a match set for 10:00 AM ET on 13 July 2026. The crowd-implied probability of 25% for Arseneault advancing suggests a significant handicap against the American, who holds a higher ATP ranking and deeper Challenger experience.

Historical data from the 2025 Granby event shows Martin defeating Leandro Riedi in qualifying before Arseneault lost in the main draw to Yosuke Watanuki, indicating a performance gap that aligns with current pricing. Arseneault’s ATP ranking sits at 674 with 51 points, whereas Martin has consistently competed at higher Challenger levels, making the 25% figure consistent with their recent head-to-head trajectories and form[7][9].

Traders should monitor the official ATP Tour schedule for any weather delays or player withdrawals, as the settlement window extends to 20 July 2026, with a 50-50 resolution if the match is delayed beyond seven days[2][8]. Polymarket’s decimal odds format and zero-KYC access contrast sharply with Kalshi’s US-only KYC requirements and Betfair’s higher fee structure, offering a distinct liquidity environment for this niche Challenger event where implied probability diverges from traditional decimal pricing models[1][4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares Granby: Nicolas Arseneault vs Andres Martin specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. The live probability is the Polymarket mid; the comparison columns summarise each venue's fee structure, KYC, settlement currency and payment rails. Every CTA routes to Polymarket Alternative, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.

FAQ

Which platform has the deepest liquidity?

Polymarket — by a wide margin. Top markets reach $50-500M volume, Kalshi ~$200M cumulative, Betfair similar. Deeper liquidity means your trade moves the quote less.

Is Betfair a Polymarket alternative?

Only partially. Betfair Exchange is UK-focused with a sports-betting emphasis; they have politics markets but with thinner liquidity than Polymarket. Settlement in GBP/EUR, 2-5% commission on winnings.

What about Smarkets as an alternative?

Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.

Which platform is accessible globally?

Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Polymarket Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.

Which platform supports Klarna/SOFORT?

Directly: none. Polymarket accepts only USDC on Polygon. Polymarket Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.