Swedish Open: Jesper de Jong vs Vilius Gaubas

Platform comparison

Market context

Jesper de Jong faces Vilius Gaubas in the round of 32 at the 2026 ATP Swedish Open in Båstad, with the match scheduled to begin on 13 July. The prediction market currently implies a 70% probability that de Jong advances, a figure that diverges notably from the 64% chance assigned by leading predictive analytics models and the $1.44 decimal odds (roughly 69%) offered by Australian sportsbook TAB[1]. While the consensus among tipsters favours de Jong due to his prior success in these conditions, the prediction-market premium suggests traders are pricing in a slightly stronger edge than the statistical models currently justify[2].

Historically, matches where prediction-market implied probabilities exceed model outputs by 5–7% often correct as tournament conditions evolve, particularly in ATP 250 events where surface nuances and fatigue play larger roles. In comparable first-round clashes at Båstad, the gap between crowd sentiment and algorithmic forecasts has narrowed within 24 hours of play, usually aligning closer to the 64–66% range unless a player shows clear pre-match physical advantage.

Traders should monitor de Jong’s recovery from his recent hard-fought final, as analysts note his counterpunching style may face pressure if fatigue lingers[6]. Gaubas, though less experienced in these conditions, offers value if the market overreacts to de Jong’s recent form. No broadcast details are confirmed yet, but any delay beyond the scheduled 11:00 am start time could trigger the market’s 50-50 resolution clause if unresolved within seven days[3][7].

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

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

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

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 Kalshi vs Polymarket. 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.

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 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 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.