Granby: Aleksandar Vukic vs Liam Broady

Platform comparison

Market context

A prediction market on this Granby tennis match operates by allowing traders to buy YES or NO shares representing their belief about the outcome. A YES share pays out if Vukic advances; a NO share pays out if Broady advances. The match was originally scheduled for 13 July 2026 at 10:00 AM ET, with the market settling by 20 July 2026. The current 100% probability on YES suggests traders are pricing in near-certainty of Vukic's advancement, though this extreme reading warrants scrutiny given the inherent unpredictability of competitive tennis.

Vukic, an Australian professional ranked in the lower-to-middle ATP range, typically faces opponents of similar calibre at Challenger and lower ATP events. Broady, a British player, has competed primarily on the ATP Challenger circuit and occasionally the ATP main tour. Historical precedent shows that when one player carries a substantial ranking or form advantage into a match, markets often reflect this asymmetry—yet even favoured players lose roughly 20–30% of the time against ranked opponents. The 100% reading here suggests either a significant ranking gap, recent form divergence, or potential withdrawal concerns affecting Broady's availability.

Traders should monitor official tournament draws and player withdrawal announcements through the ATP website and Granby event communications. Any late withdrawal, injury report, or schedule disruption would trigger the 50–50 tie-break clause. Recent ATP Challenger results for both players, published on the ATP Tour website, provide concrete form data. Surface conditions at Granby and head-to-head records, if available, offer additional context for recalibrating the current extreme probability.

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

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 Prediction Market UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 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.

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.