San Marino: Vilius Gaubas vs Thiago Monteiro

Platform comparison

Market context

Vilius Gaubas is due to play Thiago Monteiro in San Marino, and in prediction-market terms a **YES** share here pays out if Gaubas advances, while **NO** pays out if Monteiro advances. The market’s current crowd-implied price of **100% YES** means traders are treating a Gaubas win or advancement as overwhelmingly likely, but the contract still depends on the match outcome rather than ranking, reputation or pre-match commentary.[12][9]

The cleanest historical reference point is their prior head-to-head, which Monteiro has won both on the ATP and score-tracking pages, including a straight-sets win in 2024 and another meeting in 2025 on clay.[6][15][2] That record matters because markets often price in recent direct matchups when the players have already faced each other in similar conditions, though it does not guarantee the same result in a later event. One comparison site even lists Gaubas as a live underdog in the matchup, which shows how widely pre-match probabilities can vary across models and timing.[17][11]

For traders, the main catalysts are simple: official schedule changes, match start time, court assignment, and whether the contest is completed within the market’s settlement rules. The market description says a cancellation, tie, or delay beyond seven days without a winner would resolve to 50-50, so any postponement or walkover decision matters as much as the on-court score. Live score pages were carrying the fixture as a quarter-final in San Marino, which indicates the contest was on the draw, but the decisive variable is still whether one player advances against the other.[12][1][4]

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Prediction Market UK, which mirrors the Polymarket order book directly.

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 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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like Prediction Market UK trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.

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.