Swiss Open: Alexander Bublik vs Quentin Halys

Platform comparison

Market context

Alexander Bublik, the world No. 11, faces Quentin Halys in the second round of the ATP Swiss Open in Gstaad, with the match scheduled for Thursday, 16 July 2026. The prediction market currently implies an 80% probability that Bublik advances, a figure notably higher than the consensus among major sportsbook models and analytics platforms.

Historical comparisons to similar ATP second-round mismatches show that prediction markets often overprice favourites when crowd sentiment aligns with ranking gaps, yet sportsbook lines typically remain more conservative. Here, Dimers and Stats Insider both project Bublik’s win probability at 65%, corresponding to moneyline odds of approximately –220, while String Tension’s Elo model suggests a narrower edge at 54.8%. This divergence—15 percentage points between the crowd-implied 80% and the 65% model consensus—signals a potential mispricing relative to traditional sportsbook efficiency.

Traders should monitor Bublik’s form, as recent reports note he is “under a bit of pressure and not in the best of form,” which could elevate Halys’s upset chances [8]. Key catalysts include any pre-match withdrawal announcements, weather delays in Gstaad, and first-set performance, since some models favour Halys to win the opening set despite Bublik’s overall advantage [5]. The settlement window closes on 22 July 2026, with a 50-50 resolution if the match is cancelled, tied, or delayed beyond seven days without a winner.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Swiss Open: Alexander Bublik vs Quentin Halys across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Best Prediction Markets. 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'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 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.