Mallorca Championships: Jan-Lennard Struff vs Nuno Borges

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Market context

Jan-Lennard Struff and Nuno Borges are set to face off in the second round of the Mallorca Championships on grass, with the match scheduled for 7:30am ET today. The prediction market currently implies a 0% probability that Struff will advance, a stark divergence from the sportsbook lines which still offer Struff as a viable contender despite Borges’ recent momentum.

Historically, 0% implied probabilities in tennis markets often signal a cancellation or a player’s withdrawal rather than a genuine on-court deficit, yet Borges’ sole previous head-to-head victory over Struff and his recent win against a Top 50 player on grass lend weight to the market’s bearish stance on the German[2][4]. Comparable cases from previous ATP grass events show that such extreme odds usually resolve to the favoured player only when the underdog withdraws, not when the match is played competitively.

Traders should monitor official tournament announcements for any delay or withdrawal notices before the 7:30am ET start, as Borges’ grass form remains his primary catalyst[2]. The ATP Tour’s latest report confirms Borges has already secured a win at Mallorca, marking him as the first Portuguese player to do so at this venue, which may influence late odds shifts if Struff shows signs of fatigue after his first-round victory[3]. Any delay beyond seven days without a winner would trigger a 50-50 settlement, a critical dependency for risk management.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Mallorca Championships: Jan-Lennard Struff vs Nuno Borges 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 Best Prediction Markets — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

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On Best Prediction Markets, 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.

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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 does it cost to trade on Best Prediction Markets?

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

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.