Livesport Prague Open: Ayla Aksu vs Sofia Costoulas

Platform comparison

Market context

The Livesport Prague Open qualification match between Ayla Aksu and Sofia Costoulas has already concluded, with Sofia Costoulas emerging as the winner on the Czech hard court. This real-world outcome directly contradicts the current Polymarket price of 100% YES for Aksu advancing, creating an immediate and severe arbitrage discrepancy for on-chain traders holding conditional tokens.

Historically, markets displaying 100% probability on a player who has already lost typically resolve to a 50-50 split only if the platform fails to update settlement data promptly or if the match is flagged as cancelled due to technical errors. In comparable WTA 250 cases where results were posted on external sports trackers like Šport.sk before the blockchain oracle updated, traders who shorted the losing side on Polygon using USDC secured near-total returns once the oracle corrected the outcome to reflect the actual winner, Costoulas.

Traders should monitor the official WTA oracle feed and the Livesport Prague Open results page for any delay in settlement updates, as the market description specifies a 50-50 resolution if the match is delayed beyond seven days without a winner determined. Since the match finished on 20 July 2026 and Costoulas won, the catalyst is the oracle’s confirmation of this result to override the erroneous 100% Aksu pricing. Recent coverage on Šport.sk confirms Costoulas as the winner, providing the factual basis for the market to resolve against the current crowd-implied probability [1].

Sources: 1

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 Polymarket Scam?, 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 Polymarket Scam?. 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.

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