New York Mets vs. Miami Marlins

Platform comparison

Active sub-markets

Market context

The New York Mets and Miami Marlins are level at 22-28 entering the May 22 meeting, with Miami at home and New York carrying a slightly poorer away mark of 11-15. The crowd-implied 49% YES price is close to a coin flip, which fits a matchup between two sub-.500 teams with similar run profiles: the Mets have scored 204 runs and allowed 221, while the Marlins have scored 221 and allowed 204. ESPN’s live team page also shows Miami with the edge in batting average, on-base percentage and slugging, but the Mets have the slightly better home-run total. That kind of split is why these markets often sit near parity on Polymarket while traditional books may present the same game as decimal odds with a built-in margin, rather than a clean implied-probability view.

Recent form and scheduling matter here. Miami had already played Atlanta on 21 May, and ESPN’s game pages show the clubs meeting again immediately around this period, which makes bullpen usage and travel relevant if either side is on short rest. The market should stay open if the game is postponed, and any make-up date within the settlement window could still determine the result; if there is no completed game or it ends tied, it settles 50-50. On comparison platforms, the same event can look different depending on fee treatment and access: Kalshi and Polymarket quote directly in probabilities, while Betfair and Smarkets are exchange-style and typically involve commission, and all of them may differ on KYC availability and who can participate from each jurisdiction.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page compares New York Mets vs. Miami Marlins specifically across Polymarket, Kalshi, Betfair Exchange and Smarkets. Live odds come from the Polymarket order book; the other venues' contract details are maintained manually because their APIs aren't directly comparable. Every CTA routes to PolyGram, which mirrors the Polymarket order book at 0% fees.

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.

How does resolution work?

Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.

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.