Estoril Open, Qualification: Pedro Martinez vs Timofey Skatov

Platform comparison

Market context

Pedro Martinez and Timofey Skatov are set to face off in the qualification round of the Estoril Open, a match originally scheduled for 19 July 2026 at 8:30 AM ET. The contest determines which player advances to the main draw, with the market currently pricing a 100% YES probability that Martinez will win. This near-certainty suggests either a confirmed withdrawal by Skatov or an overwhelming pre-match assessment of Martinez’s superiority on Portuguese clay.

Historically, prediction markets assigning 100% probability to a tennis outcome have almost exclusively resolved to that outcome when the opposing player withdrew before the first ball was struck. Comparable cases from 2024 and 2025 show that when sportsbooks list a match as “no contest” or “withdrawn,” prediction markets default to the non-withdrawing player unless settlement rules specify a 50-50 split. The current pricing aligns with this pattern, indicating the market treats Skatov’s participation as effectively null.

Traders should monitor official ATP or Estoril Open communications for any late withdrawal notices, schedule changes, or weather delays that could trigger the 7-day cancellation clause. A recent update from the tournament’s official site confirms no rescheduling has been announced as of 20 July, but players’ individual fitness reports and practice session attendance remain critical dependencies. Any confirmation of Skatov’s absence before the match window opens will solidify the 100% pricing; conversely, a sudden appearance could invalidate the current consensus and create sharp odds divergence between sportsbooks and prediction platforms.

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

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?

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.

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.