Estoril Open: Henrique Rocha vs Pedro Martinez

Platform comparison

Market context

The Estoril Open clash between Henrique Rocha and Pedro Martinez, scheduled for 20 July 2026, has already concluded with Pedro Martinez securing a 2–0 victory over Rocha. Despite the match being played, the prediction market for this event remains open with a crowd-implied probability of 0% for Henrique Rocha advancing, creating a stark divergence from pre-match modelling that favoured the Portuguese player.

Historical precedents in ATP prediction markets show that when a match result is known but the market lags, the implied probability often reflects a technical settlement delay rather than genuine uncertainty about the outcome. In comparable cases where a result was confirmed post-tournament but the market remained active, consensus eventually corrected to reflect the actual winner, though early traders could exploit the temporary mispricing before settlement.

Key catalysts for traders include the official settlement announcement from the exchange and any updates on whether the match result will trigger an immediate resolution or a 50-50 tie due to the delayed determination clause. Recent coverage from Dimers indicated Rocha held a 51% win probability pre-match, suggesting the current 0% figure represents a significant value anomaly if the market fails to correct before the 27 July settlement window closes [2]. Traders should monitor the exchange’s settlement feed for confirmation that Martinez’s victory will resolve the market to ‘Pedro Martinez’ rather than the tie condition.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Who Will Win. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.

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.