New York Mets vs. Miami Marlins

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Active sub-markets

Market context

The Mets travel to Miami for a regular-season matchup on 23 May, with the contest scheduled for 4:10 PM ET. The current prediction-market probability of 8% for a Mets victory sits substantially below typical sportsbook opening lines for this fixture, which generally favour the Mets by 1.5 to 2 runs. This divergence suggests either that prediction-market participants are pricing in specific roster or pitching disadvantages not yet reflected in traditional betting markets, or that the 8% figure represents an outlier position relative to consensus expectations. Historical comparison shows that when prediction markets diverge this sharply from sportsbook consensus on regular-season MLB games, the discrepancy often narrows within 48 hours of game time as additional information surfaces.

The critical variables determining whether this probability floor holds centre on starting pitcher assignments and recent offensive form. The Mets' pitching depth and bullpen availability heading into late May will significantly influence their competitive position, particularly against a Marlins lineup that has shown inconsistent production through spring and early summer. Traders should monitor any roster moves, injury announcements, or bullpen usage patterns from preceding games that might explain the market's bearish Mets positioning. The settlement window extends to 30 May, providing a two-week buffer beyond the scheduled game date to accommodate any postponements typical of the Atlantic coast weather patterns during this period.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to PolyGram, which mirrors the Polymarket order book directly.

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 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'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.

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.

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.