Swiss Open: Raphael Collignon vs Valentin Vacherot

Platform comparison

Market context

Raphael Collignon faces Valentin Vacherot in the quarterfinal of the ATP Swiss Open Gstaad, with the match scheduled to begin at 10:30 local time on 17 July 2026. The prediction market currently implies a 56% chance that Collignon advances, aligning closely with Dimers’ proprietary tennis model, which calculates a 55.9% to 56% win probability for the Belgian[3][6]. This convergence suggests the market is efficiently pricing in the statistical edge rather than reacting to speculative sentiment.

Historical patterns in ATP quarterfinals on similar clay courts show that models predicting a 55–60% win probability for one player typically resolve correctly in roughly 58% of cases, indicating a slight but consistent underpricing of the favourite in prediction markets versus sportsbooks[3]. While traditional books list Collignon at -135 to -144 moneyline (implying ~57–58% probability), the prediction market’s 56% YES line sits marginally lower, creating a narrow divergence that traders on kalshi-vs-polymarket.com may monitor for arbitrage potential[3][6].

Key catalysts include the official start time confirmation and any pre-match injury updates, as both players have played back-to-back matches in the preceding rounds[2]. Dimers notes that Vacherot holds a tactical advantage in winning the first set, despite Collignon’s overall match probability edge, making early-set performance a critical dependency for traders assessing live resolution paths[3]. No major schedule changes have been announced as of 7:36 UTC on 17 July.

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

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

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Kalshi vs Polymarket trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.