Miami Marlins vs. Pittsburgh Pirates

Platform comparison

Active sub-markets

Market context

The Miami Marlins travel to Pittsburgh on 13 June for an afternoon fixture against the Pirates, with first pitch at 4:05 PM ET. The settlement window extends to 20 June, allowing for postponements or rescheduling within that seven-day window. The market currently shows zero probability assigned to a Marlins victory across prediction platforms, a stark positioning that warrants contextual scrutiny given typical sportsbook spreads for regular-season MLB matchups rarely reflect such extreme confidence.

Historical precedent suggests markets pricing one team at precisely zero probability typically reflect either data gaps or structural constraints rather than genuine certainty. In regular-season baseball, even heavily favoured teams rarely trade below 20% implied probability on major platforms; the current reading here may indicate limited liquidity, late-market movement, or a technical artefact from the platform's probability calculation. Comparable June fixtures between these franchises have generally settled within conventional ranges, with the Marlins' 2024 performance (finishing 62–100) and Pirates' 72–90 record providing baseline context for relative strength.

Traders should monitor roster announcements through the settlement window, particularly injury updates or bullpen availability for either side. Recent weather forecasts for Pittsburgh on 13 June may affect game conditions, whilst any lineup changes announced in the 48 hours preceding first pitch could shift conventional odds at major sportsbooks. The divergence between the zero prediction-market probability and typical sportsbook lines—which would likely favour Pittsburgh but not to such an extreme—represents a meaningful signal worth tracking as additional market data accumulates before the settlement deadline.

Methodology

We track Miami Marlins vs. Pittsburgh Pirates on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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?

Best Prediction Markets is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Best Prediction Markets triggers a quick verification flow that finishes in minutes.