New York Mets vs. Miami Marlins

Platform comparison

Active sub-markets

Market context

The Mets travel to Miami on 23 May for a day game against the Marlins, with first pitch at 4:10 PM ET. Polymarket currently prices this contract at zero, reflecting either a technical issue or genuine illiquidity in the order book rather than any meaningful assessment of the matchup itself. The settlement window extends to 30 May at 20:10 UTC, allowing for postponements common in late May baseball when afternoon thunderstorms frequently disrupt South Florida fixtures.

Historical context shows that May matchups between these division rivals rarely produce extreme probability skews. The Mets have won roughly 55% of their meetings with Miami over the past five seasons, a modest edge that typically translates to roughly 55–45 odds on Polymarket rather than the current zero reading. The Marlins' home-field advantage at loanDepot park—where they've posted a .500 record in recent years—offsets some of the Mets' organisational strength. Neither team has demonstrated the kind of dominance that would justify near-certain pricing.

Traders should monitor starting pitcher assignments, which MLB typically confirms 48 hours before game time. Recent injury reports matter considerably: the Mets' rotation depth has been tested this season, whilst Miami's bullpen reliability remains inconsistent. Weather forecasts for South Florida on 23 May will be critical, as afternoon thunderstorms could trigger postponement and keep this market open beyond the nominal settlement date. Any significant roster moves or roster transactions announced in the days before the fixture could shift underlying value materially.

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

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

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 it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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, PolyGram 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.