Swedish Open, Qualification: Roberto Carballes Baena vs Carlos Sanchez Jover

Platform comparison

Market context

Roberto Carballes Baena faces Carlos Sanchez Jover in the Swedish Open qualification at Bastad on 12 July 2026, with the match set to begin at 12:20 UTC. The prediction market currently implies a 0% probability that Baena advances, a stark divergence from traditional sportsbooks where PokerStars lists Baena to win 2–0 at 7.00 and 2–1 at 2.50, suggesting the bookmakers view him as a credible contender despite the prediction market’s bearish stance [3].

Historical qualification matches at Bastad often feature volatile odds shifts when lower-ranked players face experienced veterans, yet a 0% implied probability for Baena is anomalous given his career win count equals Jover’s and his ATP head-to-head record remains unbroken in public data [2][7]. Comparable cases from recent ATP qualifiers show that markets rarely assign near-zero probabilities unless a player is injured or absent, which contradicts the scheduled start time and active betting lines elsewhere.

Traders should monitor official ATP Tour updates for any late withdrawal notices or weather delays, as the settlement window extends until 19 July 2026, and a cancellation would trigger a 50–50 resolution [6][7]. No recent news sources indicate injury, but the mismatch between the 0% prediction-market implied probability and the 2.50–7.00 sportsbook odds on Baena’s set wins signals either a data error or an unpublicised dependency affecting the contract [3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Best Prediction Markets UK, which mirrors the Polymarket order book directly.

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 Best Prediction Markets UK. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Best Prediction Markets UK 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.