Swedish Open: Jesper de Jong vs Vilius Gaubas

Platform comparison

Market context

Jesper de Jong, the 26-year-old Dutch right-hander ranked 73, faces Lithuania’s Vilius Gaubas in the opening round of the Swedish Open on clay, with the market currently pricing de Jong at a 70% implied probability to advance. De Jong reached a career-high ATP ranking of 71 in January 2026 and holds a 23–31 singles record with no titles, while his Elo rating of 1711 suggests modest but consistent performance against mid-tier opponents on slower surfaces [2][5][7].

Historically, players ranked between 70 and 80 on clay in European summer tournaments show a 65–75% win rate against unranked or lower-ranked opponents when entering with recent match activity, mirroring de Jong’s current positioning. Comparable cases from 2024–2025 ATP 250 events in Sweden, Portugal, and Croatia show that a 70% crowd-implied probability for a ranked player against an unranked or lower-ranked opponent has resolved correctly in 68% of cases, validating the market’s current tilt [1][6].

Traders should monitor Gaubas’s ATP entry status and any pre-match injury reports, as the Lithuanian has limited recent clay-court data and no top-100 ranking to anchor form. A late withdrawal or schedule change by either player would trigger the 50–50 settlement clause, so conditional orders should be programmed to cancel if the match start time shifts beyond the 7-day window. The ATP Tour’s official player page for de Jong confirms his current ranking and prize money, offering a reliable dependency for algorithmic position sizing [5].

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 Fees. 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 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 Fees trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.