Granby: Daniel Milavsky vs Duncan Chan

Platform comparison

Market context

Daniel Milavsky faces Duncan Chan in the Granby Challenger, a match originally slated for 13 July 2026 but now active on prediction platforms with Milavsky heavily favoured to advance. The contest is part of the ATP Challenger Tour, where Milavsky enters as the clear favourite according to initial bookmaker odds of 1.50 against Chan’s 2.375, suggesting a roughly 67% win probability for the Canadian[1].

Historical precedents in Challenger-level tennis show that when one player holds a 1.50 decimal odds advantage, the implied probability typically aligns with a 60–70% chance of victory, yet crowd-implied probabilities on Polymarket have surged to 100% YES for Milavsky—far exceeding traditional book expectations. This divergence highlights a key difference between platforms: Polymarket uses binary implied probabilities without decimal conversion, while Kalshi and Betfair retain decimal odds and apply stricter KYC and fee structures that often temper extreme crowd sentiment.

Traders should monitor official ATP updates on match rescheduling, as delays beyond seven days from the original date could trigger a 50–50 settlement if no winner is determined. Recent coverage from Tennis Tonic confirms Milavsky is the pick to win in three sets, reinforcing the market’s directional bias, but any withdrawal or injury announcement could rapidly shift implied probabilities across competing platforms[1].

Sources: 1

Methodology

We read Granby: Daniel Milavsky vs Duncan Chan from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.

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

Polymarket vs Kalshi — which is better?

Depends on your location. Kalshi is CFTC-regulated, US-only with full KYC. Polymarket is global, on-chain, no KYC up to $1,500. Polymarket has ~10x higher liquidity but higher regulatory risk.

What does Polymarket cost vs Kalshi?

Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.

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.

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.