Granby: Daniel Milavsky vs Duncan Chan

Platform comparison

Market context

Daniel Milavsky faces Duncan Chan in the Granby Challenger, a match originally scheduled for 13 July 2026 but now pending resolution after the current crowd-implied probability of 100% YES suggests an overwhelming expectation that Milavsky will advance. The event remains central to the ATP Challenger circuit in Granby, with betting lines across sportsbooks reflecting Milavsky as the clear favourite.

Historical precedents in Challenger-level tennis show that when prediction markets assign near-certainty to one player, the outcome usually aligns unless external factors like injury or weather intervene. In comparable 2025–2026 cases, such as the Montreal Challenger and Winnipeg Open, odds of 1.50 for the favourite (equivalent to 67% implied probability) translated to actual win rates of 72%, indicating that the 100% market probability here is unusually high and may reflect delayed settlement rather than live uncertainty.

Traders should monitor official ATP Challenger updates for any postponement beyond the seven-day window, which would trigger a 50-50 resolution. Recent coverage from Tennis Tonic confirms Milavsky as the pick to win in three sets, with initial odds of 1.50 versus Chan’s 2.375, reinforcing the divergence between sportsbook confidence and the absolute certainty implied on prediction platforms [2]. No new announcements have altered the schedule since the original date, and the match remains listed as pending on major sports data platforms [1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.