Swedish Open: Jesper de Jong vs Vilius Gaubas

Platform comparison

Market context

Jesper de Jong faces Vilius Gaubas in the opening round of the Nordea Open at Båstad today, with the crowd pricing the Dutchman at a 69% chance to advance. This implied probability sits slightly above the 63–64% win probability generated by major predictive models like Dimers, which cite de Jong’s superior clay-court form and his existing head-to-head advantage [1][2]. The market is effectively betting on a repeat of their US Open qualifying encounter from last year, where de Jong secured a 1–0 victory, a historical precedent that often stabilises odds in early-round matches between players with limited prior meetings [1][5].

In comparable ATP clay-court openers where a player holds a previous head-to-head win on a different surface, the favourite’s implied probability typically converges with model outputs within a 5% margin, suggesting the current 69% figure is a rational, if slightly aggressive, assessment of de Jong’s edge [1]. Traders should monitor the official start time, currently listed for 8:40 AM ET, as any delay beyond the seven-day settlement window would trigger a 50–50 resolution rather than a standard win [2]. The primary catalyst remains the match’s completion; if play begins but is interrupted by weather or injury without a winner, the market resolves based on who advances, a clause that favours the more experienced de Jong in volatile conditions [2].

Recent previews confirm de Jong is expected to win due to his proven excellence in these specific clay conditions, reinforcing the crowd’s bullish stance [1]. While Gaubas has shown competitiveness in qualifying rounds, the lack of a clay-court head-to-head win against de Jong leaves him as the clear underdog in this matchup [1]. The settlement window closing on 20 July ensures that any prolonged delay or cancellation will be resolved quickly, limiting exposure to extended uncertainty for position holders [2].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

We track Swedish Open: Jesper de Jong vs Vilius Gaubas across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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

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.