New York Mets vs. Miami Marlins

Platform comparison

Active sub-markets

Market context

The New York Mets travel to Miami on 23 May for a regular-season matchup against the Marlins, with first pitch at 4:10 PM ET. The current 8% implied probability for a Mets victory reflects substantial underdog positioning, suggesting the market expects Miami to hold a meaningful advantage. Settlement occurs on 30 May at 20:10 UTC, allowing a full week for postponements or rescheduling should weather or other disruptions affect the scheduled date.

Historical context matters here: the Mets have won roughly 52% of matchups against Miami since 2020, yet May-specific performance diverges significantly by year. In 2024, the Mets struggled early in the season before stabilising, whilst the Marlins have shown inconsistent form in May across recent campaigns. The 8% probability suggests traders are pricing in either a Miami starting-pitcher advantage, recent Mets injury news, or a broader perception of Miami's current roster strength—factors worth cross-referencing against current standings and recent head-to-head results.

Traders should monitor roster announcements through 23 May, particularly regarding pitcher assignments and any late-inning bullpen availability. Recent injury reports from either club, published via MLB's official transactions or team statements, directly influence the probability's validity across platforms. Polymarket's fee structure (2% maker/taker) differs from Kalshi's fixed spreads, meaning the same underlying event may show different decimal odds representations; a Mets win at 8% on Polymarket equates to roughly 11.5 decimal odds, whilst Betfair's lay-back mechanism creates distinct liquidity pools. Weather forecasts for Miami on 23 May should be monitored, as postponements trigger the market's open-until-completion clause rather than immediate settlement.

Methodology

We read New York Mets vs. Miami Marlins from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live quote comes directly from the Polygon order book; the other three are listed with their platform attributes — fees, KYC, settlement currency, payment options — because a 1:1 contract comparison without API access would be guesswork.

Resolution & payout

Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). PolyGram routes every trade directly into Polymarket's on-chain settlement, which is why payouts land fastest.

FAQ

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.

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.