New York Mets vs. Miami Marlins

Platform comparison

Active sub-markets

Market context

The New York Mets travel to Miami to face the Marlins on 23 May at 4:10 PM ET in a regular-season National League East matchup. The 8% implied probability for a Mets victory reflects the market's assessment of relative team strength at that point in the season, though the settlement window extends to 30 May to accommodate any postponements. Traders depositing via Klarna or SEPA transfers should note that book depth on this fixture will depend on sustained funding flows through the week leading up to first pitch; early liquidity typically concentrates around divisional matchups, making withdrawal rails like USDC useful for managing position sizing across multiple games.

Historical context shows that May divisional games between these franchises carry meaningful variance. The Marlins have won 11 of their last 20 home games against the Mets dating back to 2023, yet the Mets' recent roster construction and pitching depth have narrowed the gap. Current probability assessments at 8% for the Mets suggest the market is pricing in either a significant Marlins home-field advantage or a notable Mets injury concern at the time of trading.

Catalysts to monitor include starting pitcher announcements, which typically arrive 48 hours before game time, and any roster moves or injury updates from either club. Weather conditions in Miami—afternoon games frequently encounter humidity and occasional rain delays—may influence both team preparation and market adjustments. Fee structures on deposits should be factored into position entry, as tight margins on lower-probability outcomes require careful capital allocation.

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

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.

FAQ

Where can I trade this market with the lowest fees?

On PolyGram, 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.

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.