Swiss Open: Raphael Collignon vs Lorenzo Sonego

Platform comparison

Market context

Raphael Collignon faces Lorenzo Sonego in the Round of 16 at the Swiss Open Gstaad, with the crowd currently pricing the Belgian as the likely winner at a 67% implied probability. This market reflects a tight contest where Collignon holds the slight favourite status, though he cannot afford a slow start against the Italian’s aggressive baseline play.

Historical modelling suggests the crowd’s 67% rating is slightly inflated compared to independent algorithms, which project Collignon’s win chance between 58% and 60% [3][4]. While bookmakers list Collignon at -200 odds (implying 66.7%) [5], the divergence between the 67% crowd price and the 60% model probability creates a potential value spot on Sonego for contrarian traders. The consensus leans heavily toward Collignon, yet the statistical edge may sit with the underdog if the match extends beyond two sets, as tips favour over 20.5 games [1].

Traders should monitor pre-match warm-up reports and any late surface-condition updates, as Gstaad’s clay can favour Sonego’s heavy topspin if the ball slows. Recent previews note Sonego is favoured in some hard-fought contest simulations despite the odds [2], indicating volatility in early set outcomes. With the settlement window closing on 22 July 2026, any delay beyond seven days without a winner triggers a 50-50 resolution, making match completion a critical dependency for position validity.

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

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 Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.