Pronóstico: Livesport Prague Open: Ayla Aksu vs Sofia Costoulas

Platform comparison

Market context

The Livesport Prague Open final between Ayla Aksu and Sofia Costoulas, originally slated for 20 July 2026, sits at a stark 100% YES probability on Polymarket, implying Aksu will advance unchallenged. This pricing contradicts pre-match tennis data showing Costoulas as the clear favourite, with betting markets assigning her a 73.3% win chance against Aksu’s 32.3% [2]. Historical precedents in prediction markets reveal that such extreme divergences often signal a match cancellation or player withdrawal rather than a genuine upset, as conditional tokens on Polygon rarely sustain 100% pricing unless the outcome is effectively locked by external factors like injury or administrative disqualification.

Traders should monitor official tournament announcements from the Livesport Prague Open for any schedule changes, player withdrawals, or cancellation notices, as these are the primary catalysts that could reset the market to the 50-50 default clause. Recent updates from umpiry.com still list the match as a pre-match toss-up with Costoulas holding a 64% edge, suggesting the on-chain price may be misaligned with live tennis odds [1]. Any delay beyond seven days from the scheduled date without a winner determined will trigger the 50-50 settlement, making real-time schedule tracking essential for USDC positions held in conditional tokens.

Sources: 1 · 2

Methodology

This page reviews Pronóstico: Livesport Prague Open: Ayla Aksu vs Sofia Costoulas 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 Polymarket Qué Es, 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

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'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.

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.

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.