Miami Marlins vs. Pittsburgh Pirates

Platform comparison

Active sub-markets

Market context

The Miami Marlins will face the Pittsburgh Pirates on 12 June at 6:40 PM ET in a regular-season Major League Baseball fixture. The market's 18% implied probability for a Marlins victory reflects the Pirates' stronger recent record and home-field advantage, though the settlement window extends to 19 June to accommodate any weather-related postponements. Under MLB's official rulebook, a completed game requires nine innings (or eight for the home team if leading); any cancellation without a scheduled make-up date would trigger a 50-50 split resolution.

Historically, the Marlins have underperformed relative to their payroll, whilst the Pirates have shown modest consistency in the NL Central. The current probability discount for Miami aligns with their mid-table divisional standing and injury concerns that emerged in early June 2024. Comparable matchups between these franchises over the past three seasons show the Pirates winning approximately 55% of games, suggesting the market's 18% figure prices in additional factors beyond baseline win rates—likely roster absences or recent form deterioration.

From a regulatory standpoint, this market's accessibility depends on jurisdiction. Under German GlüStV provisions, prediction markets on sports outcomes face stricter licensing requirements than financial derivatives; UK-based traders should note that no-KYC access up to £1,200 (approximately $1,500 USD) applies only to certain jurisdictions and does not extend to German residents. US CFTC reach extends to US persons regardless of location, meaning American traders cannot access unregistered prediction markets. Traders should verify their residency status and local gambling or financial regulations before participation, as sports prediction markets occupy an evolving regulatory space distinct from traditional betting exchanges.

Methodology

This page reviews Miami Marlins vs. Pittsburgh Pirates across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Polymarket Tax UK — the application we operate, where you trade directly against 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

Where can I trade this market with the lowest fees?

On Polymarket Tax UK, which mirrors the Polymarket order book at 0% fees. 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 it cost to trade on Polymarket Tax UK?

Zero. Polymarket Tax UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.