Swiss Open: Raphael Collignon vs Valentin Vacherot

Platform comparison

Market context

Raphael Collignon faces Valentin Vacherot in the Swiss Open quarterfinal at Gstaad, with the match scheduled to begin early Friday morning. The market currently implies a 56% chance that Collignon advances, aligning closely with independent predictive models that favour the Belgian. Dimers’ tennis algorithm assigns Collignon a 57% win probability, while Stats Insider’s analytics suggest a 55% chance, both indicating a narrow but consistent edge for the home favourite [2][4].

Historical data from ATP quarterfinals on similar clay courts shows that players with a slight modelling edge (55–58%) win roughly 58% of such contests, suggesting the current 56% crowd probability is slightly conservative. In comparable 2024 and 2025 Gstaad quarterfinals, the player favoured by predictive models by 2–3 percentage points ultimately advanced in 60% of cases, reinforcing the reliability of the current pricing [2][3].

Traders should monitor live set scores and first-set outcomes, as TAB odds indicate Collignon holds a $1.66 advantage to win the opening set versus Vacherot’s $2.20 [4]. Any delay beyond the 7-day settlement window or match cancellation would trigger a 50-50 resolution, making weather conditions at Gstaad a critical dependency. Melbet currently offers Collignon at 1.56, while Bet365 lists Vacherot at 2.5, reflecting the market’s lean toward the Belgian’s superior form on this surface [6].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page tracks Swiss Open: Raphael Collignon vs Valentin Vacherot across four political prediction venues. Live odds come from the Polymarket order book (the deepest political prediction-market book). Kalshi is the CFTC-regulated US alternative, Betfair the established UK sports-exchange with politics markets, Manifold the open play-money variant. For users geo-blocked from Polymarket directly, brokers like Trump Prediction provide a 0%-fee route into the same order book.

Resolution & payout

For political markets the resolution source is decisive. Polymarket defines a concrete source per contract (e.g. AP, Reuters, official electoral commission) and uses the UMA Optimistic Oracle as the on-chain dispute mechanism. With a clearly defined outcome the USDC payout lands within minutes of the final confirmation.

FAQ

How accurate are political prediction markets?

Historically more accurate than polls. Polymarket's Brier score on US 2024 elections was ~0.11 — better than 538 (~0.14) and every mainstream poll. Markets aggregate information with real skin in the game.

What resolution source is used for elections?

Polymarket defines the source per contract — usually Associated Press (AP Race Call), Reuters or the official electoral commission. The source is stated in contract details before the market opens.

Which platform has the deepest political liquidity?

Polymarket — by far. US 2024 presidential volume was ~$3.5B vs Kalshi (~$200M) and Betfair (~$120M). Where Polymarket is geo-blocked, brokers like Trump Prediction route into the same order book at 0% fees.

How fast do political markets react to news?

High-liquidity markets move within seconds to minutes. A Trump tweet on the economy can shift the "Trump 2024" market 2-5 points before mainstream media has written anything.

Are political prediction markets legal in my country?

It varies. They sit in legal gray areas in most jurisdictions. Polymarket is geo-blocked from US/UK/EU; some broker frontends have a different geo footprint. Trade only with capital you can afford to lose, and only if you understand the legal status in your jurisdiction.