Miami Marlins vs. New York Mets

Platform comparison

Active sub-markets

Market context

The Miami Marlins face the New York Mets on 30 May at 4:10 PM ET in a regular-season matchup. The 1% implied probability for a Marlins victory reflects the Mets' stronger position in the National League East standings and recent form. For algorithmic traders, this represents an extreme skew worth examining against historical win rates between these clubs and current roster strength metrics.

The Mets have maintained competitive advantage over the Marlins in recent seasons, winning roughly 55–60% of head-to-head contests since 2020. However, single-game outcomes deviate significantly from season-long trends; home-field advantage, pitcher matchups, and weather conditions at Citi Field or loanDepot park can shift expected value substantially. A 1% probability implies near-certainty for the Mets, which typically occurs only when facing severe roster disadvantages or facing elite pitching. Traders should cross-reference this against comparable matchups where underdogs have exceeded single-digit probabilities.

Key variables to monitor programmatically include starting pitcher announcements (expected 24–48 hours before game time), injury reports affecting either lineup, and weather forecasts for the venue. Recent form data—win streaks, run differential, bullpen availability—should feed into conditional order logic. The settlement window extends to 6 June, allowing for postponements; automated systems should account for rescheduling scenarios that might alter probability distributions if the game moves to a date with different pitching availability or team circumstances. Official MLB statistics will determine final resolution.

Methodology

We track Miami Marlins vs. New York Mets 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

Is this market available outside the US?

Polymarket App UK 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.

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.