Miami Marlins vs. New York Mets

Platform comparison

Market context

The Miami Marlins are due to play the New York Mets in a single MLB game, and this market settles on which club wins on the field; a **YES** share pays out if the Marlins win, while a **NO** share pays out if the Mets win. If the game is postponed, the market stays open until it is completed; if it is cancelled outright with no make-up game, or finishes tied, it resolves 50-50 under the market rules.

A **48% YES** price implies a near-even contest, with the market slightly leaning away from Miami but not treating the Mets as a strong favourite. That fits the recent head-to-head picture: the teams split close games earlier in the season, with the Mets winning 9-7 and 6-1 in late May, while Miami also took games 2-1 and 4-1 in that same stretch[3][7][15][16]. Season-to-date numbers also point to a modest edge for New York on pitching, with ESPN showing the Mets at a 3.92 ERA versus Miami’s 4.24, although Miami’s offence has produced a slightly better batting average and more runs[14].

For traders, the main catalysts are the confirmed starting pitchers, late lineup changes, and any weather-related delay that could push the game past the settlement window. Pre-game win probabilities can move materially once line-ups and arms are announced, and recent form has been mixed: Miami has alternated low-scoring wins and losses, while New York has been stronger at home but still inconsistent[10][14]. Because this market only resolves after the game is officially completed, a postponement before first pitch would delay settlement rather than force an outcome[1].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.

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?

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

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.

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.