Swiss Open: Yannick Hanfmann vs Valentin Vacherot

Platform comparison

Market context

Yannick Hanfmann faces Valentin Vacherot in the Round of 16 at the ATP Swiss Open in Gstaad, with the match scheduled for 4:00 AM ET on 15 July 2026. Despite sportsbooks pricing Hanfmann as a clear favourite with implied win probabilities between 60% and 67%, the prediction market for Hanfmann advancing shows a crowd-implied probability of 0% YES, creating a stark divergence from traditional betting lines and analyst consensus [3][4][6].

Historically, such extreme misalignments between prediction-market liquidity and sportsbook odds often signal either a technical glitch, a suspended market due to unresolved player status, or a crowd betting against a known outcome based on non-public information. In comparable ATP events, when prediction markets flatline at 0% while models assign 60%+ win chances, the contract typically resolves to the model favourite once liquidity normalises or the underlying event confirms [3][6].

Traders should monitor official ATP Gstaad match-start confirmations and any late injury or withdrawal announcements, as a cancellation or delay beyond seven days would force a 50-50 resolution per market rules [2]. Dimers’ advanced model and Tennis Tonic both reaffirm Hanfmann as the likely winner, with odds of 1.65 versus Vacherot’s 2.23, suggesting the 0% market price is an outlier rather than a reflection of genuine match risk [6][7].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets, which mirrors the Polymarket order book directly.

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 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.

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.

Do I need to KYC for this market?

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