Mallorca Championships: Nuno Borges vs Ethan Quinn

Platform comparison

Active sub-markets

Market context

The underlying event is the ATP Mallorca semi-final between Nuno Borges and Ethan Quinn, scheduled for 9:00 AM ET on 26 June 2026 on the grass of the Centre Court. With the crowd-implied probability for Borges advancing sitting at 0%, the market appears to have already priced in Quinn’s decisive victory, a result confirmed by live reports stating Quinn won 6–1, 6–2 in just 55 minutes [2]. This mirrors how certain prediction markets, like Eurovision’s 50/50 jury-televote split or the Oscars’ preferential ballot for Best Picture, can rapidly converge once a clear outcome emerges, leaving little room for public dissent once the jury (or in this case, the match result) is settled.

Traders should monitor official ATP Tour confirmations of the match result and any subsequent withdrawal notices, as these will determine final settlement under the fair-price rules if the match is deemed incomplete [6]. Recent coverage from Tennis TV highlights the semi-final intensity, yet the speed of Quinn’s win suggests the result is definitive [3]. Watch for any delays beyond the seven-day window, which would trigger a 50–50 resolution, though current data indicates the match concluded without such complications [1]. The key dependency is the official scoreline confirmation, which will lock in Quinn as the resolver for this market.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Mallorca Championships: Nuno Borges 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 PolyGram — 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

Where can I trade this market with the lowest fees?

On PolyGram, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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 it cost to trade on PolyGram?

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

Do I need to KYC for this market?

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