Swiss Open: Juan Manuel Cerundolo vs Casper Ruud

Platform comparison

Market context

Juan Manuel Cerundolo has already defeated Casper Ruud 6-2, 1-6, 6-3 in the Swiss Open Gstaad quarter-final on Friday, securing his place in the semi-finals against Ignacio Buse [5][6]. The market’s current 13% YES probability for Cerundolo advancing appears to reflect a significant lag, as the match result is confirmed and the outcome is settled in real time [7][8]. This discrepancy suggests the market has not yet updated to reflect the completed event, creating an immediate arbitrage opportunity for traders aware of the live score.

Historically, prediction markets for tennis matches that have already concluded but remain unupdated in settlement systems often correct within hours once official results are verified by major sports data providers. Comparable cases from ATP tournaments show that when a match result is widely reported by sources like Tennis.com or Sportschau, markets typically resolve to the actual winner within 2–6 hours [5][9]. The 13% probability for Cerundolo is therefore inconsistent with the factual outcome, where he has already won and advanced.

Traders should monitor official ATP settlement updates and sports data feeds for confirmation of the market’s resolution to Cerundolo. No further catalysts are needed, as the match is complete and the winner is determined [5][6]. The primary dependency is the market operator’s recognition of the result, which is already documented across multiple authoritative sources [7][8].

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

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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 Prediction Today. 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 Prediction Today 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.