Swiss Open: Raphael Collignon vs Valentin Vacherot

Platform comparison

Market context

Raphael Collignon faces Valentin Vacherot in the Swiss Open Gstaad quarterfinal today, with the on-chain market pricing Collignon as the likely winner at 56% YES. Traders on Polymarket are buying conditional tokens in USDC on Polygon, where the contract resolves to Collignon if he advances, Vacherot if he wins, or a 50-50 split if the match is cancelled or delayed beyond seven days without a result.

Historical pricing in ATP quarterfinals often diverges from model outputs; here, Dimers’ simulation aligns exactly with the crowd at 56% for Collignon, while traditional bookmakers imply a higher 63.6% chance for him at -175 odds[3][4]. This gap suggests the on-chain market is slightly more cautious than the sportsbooks, mirroring past cases where live tennis markets corrected slowly after early odds shifts, making the current 56% a tight entry point before the 10:30 local start.

Watch for the official 10:30 court assignment and any weather delays, as Gstaad’s mountain venue can suspend play abruptly. The match is scheduled for 4:00 AM ET, but local confirmation at 10:30 CET is the key catalyst; if the match begins and is not completed, the market resolves to the player who wins the most sets, per the settlement rules[2]. No major injury news has emerged yet, but a late withdrawal would trigger the 50-50 clause immediately.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Swiss Open: Raphael Collignon vs Valentin Vacherot across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi UK, which mirrors the Polymarket order book at 0% fees.

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

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 Kalshi 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.

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 Kalshi UK 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.