Swedish Open: Andrey Rublev vs Sebastian Baez

Platform comparison

Market context

Andrey Rublev faces Sebastian Baez in the Swedish Open quarter-final at Nordea Open in Båstad today, with the match scheduled to begin shortly. On Polymarket, this contract trades at a 100% YES probability for Rublev advancing, implying the market views his victory as virtually certain despite the on-chain mechanics allowing for a 50-50 resolution if the match is cancelled, delayed beyond seven days, or ends in a walkover.

Historical precedents in ATP prediction markets show that contracts pricing near 100% often reflect overwhelming model consensus rather than guaranteed outcomes, as seen in previous high-profile matches where late withdrawals or weather delays triggered the conditional token reset to 50-50. In this specific case, Rublev’s 59% win probability according to Dimers’ advanced tennis model contrasts sharply with the crowd-implied certainty, suggesting the market may be overreacting to his superior ranking rather than accounting for Baez’s clay-court resilience [4].

Traders should monitor real-time updates on player availability and weather conditions in Båstad, as any announcement of a walkover or match cancellation will instantly shift the settlement to 50-50 per the market rules [2]. The Sportschau live feed confirms the match is currently set to commence at 14:15 local time with no score yet recorded, meaning any pre-match withdrawal would invalidate the current pricing [1].

Sources: 1 · 2 · 3 · 4

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 PolyGram, which mirrors the Polymarket order book directly.

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

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 PolyGram 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.