Swiss Open: Raphael Collignon vs Lorenzo Sonego

Platform comparison

Market context

Raphael Collignon faces Lorenzo Sonego in the Swiss Open Gstaad round of 16, a match scheduled for early Wednesday morning ET where the crowd currently backs the Belgian with a 56% implied probability of advancing. This prediction-market line sits notably below the consensus found in major sportsbooks, which price Collignon at -200 odds, translating to a 66.7% win chance, while independent modelling from Dimers projects a 61% probability for the same outcome [4][6]. The divergence suggests prediction-market traders are either hedging against Collignon’s recent slow starts or reacting to Sonego’s tactical maturity in high-pressure moments, a trait highlighted by analysts who favour the Italian to come through a hard-fought contest [1][3].

Historical data from similar ATP 250 events in Gstaad shows that when a player holds a 10%+ edge in sportsbook implied probability but trails in prediction-market sentiment, the underdog often capitalises on early momentum to force a three-set battle. Collignon’s losing head-to-head record against projected opposition in this draw adds weight to the caution surrounding his 56% backing, as his previous 2-3 record against similar opponents suggests vulnerability if he fails to dictate early [5]. Traders should monitor the official start time confirmation and any pre-match warm-up reports, as delays beyond the scheduled window could trigger the market’s 50-50 settlement clause if unresolved within seven days [2].

The primary catalyst remains Collignon’s ability to avoid a slow start, a recurring issue noted in preview analysis that could swing the match toward Sonego’s favoured 7-5, 6-4 scoreline [1][3]. With the settlement window closing on 22 July 2026, any injury news or schedule adjustments announced before the match will be critical, as the market resolves to the advancing player unless the contest is cancelled or abandoned without a winner [2]. Current betting odds in America list the game spread at -2.5 for Collignon, reinforcing the expectation of a tight contest where total games likely exceed 20.5 [4].

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

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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

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How reliable are the quoted odds?

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