Miami Marlins vs. Pittsburgh Pirates

Platform comparison

Active sub-markets

Market context

The Miami Marlins travel to Pittsburgh on 12 June for an evening fixture against the Pirates, with settlement contingent on official MLB records through 19 June. The 0% crowd probability reflects either extreme confidence in a Pittsburgh victory or minimal trading activity in this matchup between two teams operating well below .500 in recent seasons.

Historical context suggests caution in treating such extreme probabilities as settled fact. The Marlins and Pirates have traded wins unpredictably in their recent head-to-head encounters, with neither club demonstrating consistent dominance. Both franchises have experienced mid-season roster adjustments and managerial scrutiny over the past two years, making form-based predictions volatile. A single absence through injury or suspension can materially shift expected run production in games between clubs with shallow offensive depth.

Traders should monitor lineup announcements in the 48 hours preceding the fixture, particularly regarding availability of either team's primary power hitters. Weather conditions at PNC Park—notably wind direction and temperature—carry measurable influence on ball carry distance in June. Recent pitching matchup data, including ERA splits and bullpen usage patterns from the preceding week, will clarify whether either starter enters the game fatigued. The Pirates' home-field advantage is marginal but documented; Pittsburgh's record at PNC Park typically runs 3–5 percentage points above their road performance. Any late-breaking injury reports from beat reporters covering either club should prompt immediate probability reassessment.

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

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.

FAQ

Where can I trade this market with the lowest fees?

On Sport Prediction, 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.

Is this market available outside the US?

Sport Prediction 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.

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.

Do I need to KYC for this market?

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

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.