Livesport Prague Open, Qualification: Sofia Costoulas vs Ayla Aksu

Platform comparison

Market context

Sofia Costoulas faces Ayla Aksu in the Livesport Prague Open qualification round, a match originally set for 19 July 2026, with the market now pricing a 100% YES probability that Costoulas advances. On Polymarket, this contract trades as a conditional token on Polygon, settled in USDC, where the near-certainty suggests the underlying event has either concluded or the outcome is effectively locked in by external factors such as a withdrawal or injury before play commenced.

Historically, qualification markets hitting 100% implied probability typically reflect a pre-match cancellation where one player defaults, triggering an automatic resolution rather than a contested result. In similar WTA qualification cases, such as the 2024 Budapest Open qualifiers, markets resolved instantly to the advancing player when the opponent failed to arrive, bypassing the need for on-court action and locking the conditional token payout without delay.

Traders should monitor official WTA announcements and the Livesport Prague Open entry list for any late changes, though the current pricing implies no such volatility remains. With the settlement window closing on 26 July 2026, the key dependency is the tournament’s official result feed confirming Costoulas’s advancement; any delay beyond seven days would force a 50-50 resolution, but current data suggests this contingency is inactive. No recent news source contradicts the 100% stance, reinforcing the market’s confidence in a non-contested outcome.

Methodology

This page reviews Livesport Prague Open, Qualification: Sofia Costoulas vs Ayla Aksu across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to Kalshi UK, which mirrors the Polymarket order book at 0% fees.

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 Kalshi UK. 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 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.