San Jose Earthquakes vs. St. Louis City SC

Platform comparison

Market context

On 15 August 2026, the San Jose Earthquakes will host St. Louis City SC in Major League Soccer. Polymarket currently prices the YES contract—presumably a San Jose victory—at zero, reflecting either extreme confidence in an alternative outcome or minimal trading volume. The settlement window closes at 02:30 UTC on 16 August, giving traders roughly 26 hours post-kickoff to resolve the conditional tokens on Polygon. USDC holders backing this contract have effectively written off a home win for San Jose, pricing in either a draw or St. Louis victory as certainties.

Historical MLS home-field advantage typically ranges between 35–45 per cent win probability, yet San Jose's recent form and St. Louis City's competitive standing will heavily influence fair value. The Earthquakes have struggled with consistency in recent seasons, whilst St. Louis City, despite their inaugural MLS campaign in 2023, have established themselves as a mid-table side with capable depth. Comparable fixtures between established and newer franchises show that novelty-driven performance gaps have largely closed; current squad composition and injury status matter far more than organisational age.

Traders should monitor team news through early August—specifically confirmed absences through injury or international commitments—and final lineup announcements within 48 hours of kickoff. MLS fixture congestion in mid-August often affects squad rotation decisions. Recent form updates from both clubs' official channels and ESPN's injury reports will be critical inputs before the conditional tokens settle on-chain.

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 PolyGram, 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

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.

Do I need to KYC for this market?

On Polymarket directly, no — it's wallet-based. Intermediary brokers like PolyGram 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.