Miami Marlins vs. New York Mets

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Market context

The Miami Marlins travel to New York for a day game against the Mets on 31 May at 1:40 PM ET. Polymarket currently prices a Marlins victory at 42%, implying the Mets as 58% favourites. This pricing reflects the Mets' stronger roster composition and recent form, though the Marlins remain competitive in the NL East division. The conditional token structure on Polygon means traders holding YES (Marlins) tokens profit only if Miami wins outright; any postponement keeps the market open until completion, whilst cancellation or a tie triggers a 50-50 split of the USDC pool.

Historical matchups between these clubs show the Mets have won roughly 55% of games over the past three seasons, consistent with the current 58% implied probability. The Marlins, however, perform better in day games and have shown volatility when facing mid-tier pitching. Starting pitcher assignments will be the primary catalyst—if the Marlins deploy a top-tier starter against a Mets pitcher outside their top three, the probability could shift materially. Weather conditions at Citi Field, particularly wind direction affecting fly balls, also influence outcomes in May games.

Traders should monitor injury reports through 30 May, as the Mets have dealt with rotation depth issues this season. Recent roster moves and bullpen availability matter significantly for a day game, where fresh arms are less available. The Marlins' offensive consistency against left-handed pitchers will determine whether they can exploit any Mets weaknesses. Settlement occurs on 7 June, allowing time for any postponement resolution.

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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?

On Polymarket Scam?, 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?

Polymarket Scam? 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 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, Polymarket Scam? 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.