Estoril Open, Qualification: Pedro Martinez vs Timofey Skatov

Platform comparison

Market context

Pedro Martinez faces Timofey Skatov in the Estoril Open qualification match originally set for 19 July 2026, with the prediction market currently pricing Martinez’s advancement at a 100% implied probability. On Polymarket, this USDC contract on Polygon reflects near-total certainty, trading conditional tokens that resolve to Martinez if he wins, Skatov if he advances, or a 50-50 fair price if the match is cancelled, tied, or delayed beyond seven days without a result.

Historically, such 100% pricing in tennis qualifiers often precedes a withdrawal or administrative cancellation rather than a competitive upset, as seen in ATP markets where one player’s absence triggers fair-price settlements. Kalshi’s rules confirm that if a match does not begin—signaled by the first ball played—all markets resolve to a fair price, and any post-start withdrawal resolves the withdrawing player to “No”[1]. This precedent suggests traders should scrutinise whether the 100% reflects genuine dominance or an unannounced absence.

Key catalysts include official ATP draw updates, player injury reports, and court assignment confirmations for the Estoril qualifier. Traders must monitor the ATP’s live schedule and any late-night announcements from the tournament organiser, as a delay beyond the seven-day window or a pre-match withdrawal would immediately invalidate the current pricing. Recent coverage of Estoril’s 2026 qualifiers highlights frequent schedule shifts due to weather and player availability, making real-time verification essential before holding the contract[1].

Sources: 1

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.

What does Polymarket cost to trade?

Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.

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.