Mallorca Championships: Murphy Cassone vs Ethan Quinn

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Active sub-markets

Market context

The underlying real-world event is a men’s singles tennis match between Murphy Cassone and Ethan Quinn at the Mallorca Championships, scheduled to begin on 24 June 2026 at 10:00 UTC. In prediction markets, a YES share pays out if the market’s specified outcome occurs—here, that Murphy Cassone advances—while a NO share pays if he does not. The current crowd-implied probability of 100% YES suggests traders are virtually certain Cassone will win this Round of 16 clash, though such certainty is rare in professional tennis where momentum can shift instantly.

Historically, 100% implied probabilities in tennis markets have almost always preceded either a match cancellation or a late withdrawal, as seen in the 2024 Mallorca Open when Tallon Griekspoor’s opponent pulled out before play[1]. Comparable cases show that even dominant players rarely face odds this skewed without an external factor, such as injury or scheduling conflict, making this probability a signal to watch for non-playing resolutions rather than a straightforward win prediction.

Traders should monitor official ATP Tour announcements for any delay, withdrawal, or cancellation notices, as these would trigger the market’s 50-50 resolution clause if the match is not completed[4]. Recent coverage notes the contest will be streamed on GRANDSTAND, so any broadcast disruption or venue issue could also impact the outcome[9]. With the settlement window ending on 1 July 2026, timely updates from the ATP and tournament organisers remain the primary catalysts for reassessing this near-certain YES position.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Mallorca Championships: Murphy Cassone vs Ethan Quinn across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Prediction Market UK — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Prediction Market UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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 it cost to trade on Prediction Market UK?

Zero. Prediction Market UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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?

Not under $1,500 of lifetime trading volume. Above that threshold, Prediction Market UK triggers a quick verification flow that finishes in minutes.