San Jose Earthquakes vs. St. Louis City SC

Platform comparison

Market context

On Saturday, 15 August 2026, Major League Soccer will host a regular-season fixture between the San Jose Earthquakes and St. Louis City SC. In prediction markets, a YES share represents a bet that this specific match will occur as scheduled; a NO share bets that it will not. Settlement occurs at 02:30 UTC on 16 August, shortly after the anticipated final whistle. The current 0% probability assigned to YES suggests traders believe the match is virtually certain to proceed.

MLS fixtures rarely face cancellation once fixtures are published and teams have begun their final preparations. In the 2024 and 2025 seasons, weather-related postponements affected fewer than 2% of regular-season games, and most rescheduled matches were moved rather than cancelled outright. The Earthquakes and City SC have no recent history of fixture abandonment due to stadium unavailability or administrative issues. Comparable markets on established MLS matchdays typically settle YES at rates exceeding 98%, with NO outcomes confined to extraordinary circumstances such as natural disasters or league-wide stoppages.

Traders monitoring this market should track weather forecasts for San Jose in the days preceding 15 August, particularly severe thunderstorms or extreme heat that might trigger safety protocols. MLS injury announcements or unexpected roster changes do not affect fixture status. Any official league communication regarding venue access, travel disruptions, or schedule revisions would be material; such announcements typically emerge via the league's official website or team social-media channels. Given the settlement window closes within hours of kickoff, real-time updates during match day itself carry limited trading value.

Methodology

We track San Jose Earthquakes vs. St. Louis City SC across the five venues with material prediction-market liquidity. The probability shown is the live Polymarket mid; the comparison rows summarise how each venue treats the underlying contract — fees, KYC thresholds, settlement currency, deposit options. The highlighted row marks the cheapest route into Polymarket's order book.

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.

UK Frequently Asked Questions

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.

Is Polymarket legal in the UK?

Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.

Do I pay tax on prediction market profits in the UK?

UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.

How do I deposit on Polymarket from the UK?

UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.