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

Platform comparison

Market context

The Swedish Open qualification match between Roberto Carballes Baena and Carlos Sanchez Jover in Bastad, Sweden, is set to begin today at 12:20 UTC on Court 3, with the market asking whether Baena will advance past Jover [1][2]. In prediction markets, a YES share pays out if the specified outcome occurs (here, Baena winning), while a NO share pays out if it does not; the current 0% implied probability for YES suggests the crowd expects Baena to lose or the match to be unresolved in his favour [2].

This first-time professional head-to-head between two Spanish players, who hold equal career win totals, lacks historical precedent to anchor expectations, making the 0% probability an outlier compared to typical qualification markets where favourites rarely start at zero [3][6]. In similar ATP Bastad qualifiers with no prior H2H, markets usually open near 40–60% for the higher-ranked player, so this extreme pricing likely reflects either a walkover expectation, injury concern, or a data error rather than pure skill assessment [3][5].

Traders should monitor official ATP or tournament announcements for player status updates, as any pre-match injury, walkover, or cancellation before a ball is played will trigger a fair-price resolution rather than a 50–50 outcome [2]. The match is scheduled for 9:00 AM ET (12:20 UTC) today, and if postponed beyond two weeks, the market remains open until the rescheduled match concludes; any retirement after play begins will settle markets based on completed play [2][5].

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 Prediction Market UK, which mirrors the Polymarket order book directly.

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

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