Estoril Open: Kyrian Jacquet vs Alexander Blockx

Platform comparison

Market context

Polymarket is pricing the Kyrian Jacquet v Alexander Blockx contract at **37% YES** on USDC-settled, Polygon-based conditional tokens, which is materially below most public pre-match views and implies the market is still leaning towards a Blockx advance. Independent previews and model-led forecasts published before play have generally favoured Blockx, with one analytics model putting him at **61%** and several outlets also picking him in straight sets, so the current on-chain price sits on the lower end of that range.[1][4][6]

That gap is consistent with a tennis market where traders often reprice quickly around live availability, surface fit and draw-path information, but the key reference point here is the event state rather than generic strength. Public match pages show the fixture as part of the Estoril Open on Wednesday, 22 July 2026, and one results feed now lists a completed scoreline of **Jacquet 1-0 Blockx**, which is exactly the kind of contradiction that matters for settlement in a Polymarket contract: if the match was not fully completed, if it was abandoned, or if official progression is unclear, the 50-50 fallback terms can become decisive.[2]

For a trader, the main catalysts are not abstract form trends but the tournament desk, official draw updates and any late scheduling or score confirmation from the organiser or ATP feeds, because this market resolves on who **advances** rather than simply who wins a set. The stated settlement window runs to **29 July 2026**, so any delay beyond seven days from the scheduled start, or any administrative outcome that leaves no winner determined, pushes the contract towards the neutral 50-50 resolution instead of a side winning outright.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Estoril Open: Kyrian Jacquet vs Alexander Blockx across five venues. The live probability is the Polymarket mid-price, sourced directly from the on-chain Polygon order book; the comparison columns benchmark each venue on fee structure, KYC, settlement currency and payment rails. Every CTA routes to PolyGram, which mirrors 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?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. 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 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 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.