Pittsburgh Pirates vs. Miami Marlins

Platform comparison

Market context

The Pirates travel to Miami on 13 August for a regular-season matchup against the Marlins, with first pitch at 1:10 PM ET. Polymarket currently prices a Pirates victory at 54% implied probability, reflecting modest favouritism for Pittsburgh. The conditional token structure on Polygon settles USDC payouts based on official MLB final statistics, with the resolution window extending to 20 August to accommodate any postponements.

Pittsburgh enters August as a mid-table National League club with inconsistent offensive production, whilst Miami has struggled with depth issues across both rotation and lineup. Historical head-to-head records between these franchises show relatively balanced outcomes over recent seasons, though home-field advantage at loanDepot Park typically favours the Marlins by 2–3 percentage points in comparable matchups. The 54% pricing suggests traders view Pittsburgh's recent form as marginally superior without overwhelming confidence, consistent with how these divisional contests typically resolve when neither team carries significant momentum.

Traders should monitor starting pitcher announcements, which MLB typically confirms 24–48 hours before game time. Injury updates to key position players—particularly any last-minute roster moves from either club—can shift the conditional token distribution meaningfully. Weather conditions in Miami during mid-August, including potential thunderstorm activity that could trigger postponement protocols, represent a secondary consideration. Recent form entering the weekend and any bullpen availability constraints following back-to-back games will influence how the market reprices between now and first pitch.

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

Where can I trade this market with the lowest fees?

Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

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.