New York Mets vs. Miami Marlins

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Active sub-markets

Market context

The Mets travel to Miami on 23 May for a single game against the Marlins, with first pitch at 4:10 PM ET. The 2% implied probability reflects the Mets' stronger roster composition and recent competitive standing within the National League East, though the Marlins remain capable of any given result on a single day.

Historical context suggests that inter-divisional matchups between teams with disparate win-loss records still produce upsets at rates that exceed the lowest probability tiers. The Marlins have periodically troubled the Mets in recent seasons despite inferior overall records, and single-game variance in baseball—particularly in May when weather and fatigue patterns remain unsettled—routinely produces outcomes that defy season-long projections. A 2% probability implies near-certainty for the Mets, a threshold rarely justified by pre-game conditions alone.

Traders should monitor starting pitcher assignments, which typically become official 24–48 hours before game time. Recent injury reports from both clubs' beat writers, particularly any late absences from the Mets' lineup, could shift the underlying matchup dynamics. Weather conditions at loanDepot park—notably wind direction and temperature—affect ball carry in Miami's humid climate. The Marlins' recent form, including any winning streaks or offensive surges, will be reported by local Miami Herald sports coverage and should be cross-referenced against the Mets' pitching depth and bullpen availability heading into the fixture.

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.

Is this market available outside the US?

PolyGram 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.

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.

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.