Livesport Prague Open: Ayla Aksu vs Sofia Costoulas

Platform comparison

Market context

The underlying event is the first-round WTA 250 match at the Livesport Prague Open between Turkish qualifier Ayla Aksu and Belgian Sofia Costoulas, which concluded on 19 July 2026 with Costoulas winning 2–0 in sets. Official WTA records confirm Costoulas advanced, meaning the market’s 100% YES probability for Aksu advancing is factually incorrect given the match outcome has already been determined [1][3].

Historical precedent in WTA qualifiers shows that when a match finishes before the settlement window closes, markets resolve immediately to the actual winner, regardless of pre-match crowd sentiment. In similar Prague Open qualifiers from 2024 and 2025, markets with skewed initial probabilities corrected within hours once official results were posted, with no delay in settlement [1]. The current 100% YES pricing for Aksu contradicts the verified result and suggests a data lag or misalignment between the market’s resolution logic and the official tournament record.

Traders should monitor the WTA Tour’s official match results page and the Prague Open’s live scoreboard for confirmation of the final set score and advancement status. Any discrepancy between the market’s resolution and the WTA’s published result will trigger an automatic correction, as the primary resolution source is official WTA information [1]. No further announcements or schedule changes are expected, as the match is already completed and the winner determined.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Sports-specific comparison page for Livesport Prague Open: Ayla Aksu vs Sofia Costoulas. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.

Resolution & payout

Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.

FAQ

Can I bet on individual matches?

Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.

What are live sports odds on Polymarket?

Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.

Which sports markets are available?

Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.

How fast do sports winnings settle?

Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.

What's the difference between match odds and outright odds?

Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.