San Marino: Facundo Acosta vs Vilius Gaubas

Platform comparison

Market context

Facundo Díaz Acosta and Vilius Gaubas are due to meet in the San Marino Challenger semi-finals on clay, with the match listed for Centre Court and scheduled in the late afternoon local slot. The market’s 100% crowd-implied YES price indicates the field is treating a played match as the base case, so the main programmatic task is less about picking a winner and more about monitoring whether the fixture actually starts on time and produces a completed advancement decision.[2][9]

Comparable pricing on clay would normally sit with the higher-seeded, better-ranked player if recent form is strong, and that is consistent here: Díaz Acosta is the top seed, ranked around ATP 107, and has already won multiple Challenger titles in 2026, while Gaubas is seeded third and ranked around ATP 128.[3][5][11] The pair also have a recent head-to-head on clay, with Díaz Acosta beating Gaubas in straight sets in Braunschweig in July, which gives traders a recent form anchor when modelling short-odds markets.[7][12]

For tooling, the practical triggers are the order of play, live match state, and any official postponement or retirement updates, because a cancellation, a tie, or a delay of more than seven days would force the market to 50-50 under the rules. In a bot or conditional-order workflow, that means polling tournament schedules and live scoring feeds, then branching on “started”, “completed”, or “not played” rather than assuming settlement from a listed fixture; the San Marino event was scheduled to run through 2 August, so a same-day or next-day result would normally avoid any ambiguity unless weather or court backlog intervenes.[3][11][16]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews San Marino: Facundo Acosta vs Vilius Gaubas 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 Polymarket Review UK, which mirrors the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

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.