Hamburg European Open, Qualification: Eva Vedder vs Mona Barthel

Platform comparison

Market context

Eva Vedder lost to Mona Barthel in their Hamburg European Open qualification match on 20 July 2026, with Barthel winning 2–1 in sets. The match has already concluded, meaning the prediction market titled “Hamburg European Open, Qualification: Eva Vedder vs Mona Barthel” is effectively settled in real-world terms, despite its official settlement window extending to 27 July 2026. The current 0% YES probability for Vedder advancing aligns with the confirmed result, where Barthel emerged victorious.

Historically, prediction markets on completed tennis matches that resolve post-event often retain near-zero or near-100% probabilities depending on the outcome, as seen in WTA and ATP markets where late-settlement clauses fail to override factual results. In comparable cases, such as the 2024 MSC Hamburg Ladies Open, markets reflecting finished matches showed no meaningful drift after the result was confirmed, reinforcing that the 0% figure here is not speculative but reflective of an established outcome.

Traders should monitor official tournament confirmations and any potential appeals or disqualifications, though no such dependencies are currently reported. The match result is documented across multiple tennis databases, including Tennis Majors and Ria.ru, which list Barthel as the winner with a 2–1 set score [1][2]. With no indication of cancellation, tie, or delay beyond the seven-day threshold, the market will resolve to “Mona Barthel” unless an extraordinary administrative reversal occurs, which remains unsupported by any recent news.

Sources: 1 · 2

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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

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.

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 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.