Pronóstico: Miami Marlins vs. New York Mets

Platform comparison

Market context

Polymarket is pricing this Marlins-Mets contract at **48% YES** on USDC rails on Polygon, which leaves the market close to a coin-flip rather than assigning a clear favourite. In practical terms, the conditional token pair is saying the Marlins have been given almost even odds against the Mets in tonight’s July 31 game, with settlement tied to the official result unless the game is postponed, cancelled, or ends in a tie, in which case the market is designed to resolve 50-50.

Recent form helps explain why the price is still clustered near parity. ESPN’s game page shows Miami entering at 26-33 overall and 8-18 away, while New York is 25-33 overall and 14-15 at home; the Mets also carry a slightly better staff ERA, 3.92 to Miami’s 4.24.[5] The recent head-to-head split has been tight enough to keep the matchup live for traders: the teams exchanged wins in late May, with the Mets taking two at home and the Marlins taking one in the series.[5][13] FOX Sports also notes Miami’s 4-6 record over its last 10, while New York is 6-4 with a lower 3.91 ERA over that span.[2]

For Polymarket users, the main catalysts are simple and time-sensitive: the confirmed starting pitchers, any late scratches, and whether the game completes on schedule before the settlement window closes at 2026-08-07T23:10:00Z. Because the market resolves off the official final statistics, postponement into a make-up date keeps the contract open, while an outright cancellation or tie pushes it to 50-50 by rule. Live score feeds from Yahoo Sports and ESPN are the fastest way to track whether late inning swings, rain delays, or schedule changes could alter the token’s final value.[1][3]

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

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 Polymarket Qué Es. 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.

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.