New York Mets vs. Miami Marlins

Platform comparison

Active sub-markets

Market context

The Mets travel to Miami for a regular-season matchup against the Marlins on 23 May at 4:10 PM ET. Polymarket's conditional token structure currently prices this contract at 0% YES, reflecting the market's assessment that the Mets win probability sits at or near zero. On Polygon, traders are holding USDC positions in the YES and NO conditional tokens, with settlement tied to official MLB final statistics. The 0% pricing suggests either extreme confidence in a Marlins victory or, more likely given typical MLB matchup dynamics, a thin liquidity pool where minimal trading activity has occurred.

Historical context matters here. Single-game MLB contracts rarely settle at true zero probability unless one team is fundamentally compromised—injured star players, forfeiture, or similar structural disadvantage. The Mets and Marlins are division rivals with comparable recent performance trajectories, though the Mets have generally held stronger win percentages in head-to-head matchups over the past three seasons. A 0% reading on Polymarket typically signals either a data lag, minimal order flow, or a market-making artifact rather than genuine consensus that the Mets have no realistic chance.

Traders should monitor roster announcements and pitching assignments in the days before 23 May. Starting pitcher confirmation, bullpen availability, and any late injury reports will shift the underlying probability substantially. The settlement window extends to 30 May at 20:10 UTC, allowing for postponements. If the game proceeds as scheduled, official MLB box scores will determine resolution; if postponed without a make-up date or cancelled entirely, the contract resolves 50-50 across both conditional tokens.

Methodology

We track New York Mets vs. Miami Marlins on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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.

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.