Miami Marlins vs. New York Mets

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Active sub-markets

Market context

The Miami Marlins travel to Queens for a daytime fixture against the New York Mets on 31 May, with the crowd-implied probability favouring the Mets at 58 per cent. This represents a modest consensus lean toward the home side, though the 42 per cent underdog odds on Miami suggest meaningful uncertainty in a matchup between two teams with divergent trajectories through the season's opening months.

Historical context matters here: the Marlins have historically struggled in road matchups against National League East rivals, particularly in May when travel fatigue compounds inconsistent roster depth. The Mets, conversely, have shown relative stability at Citi Field over comparable periods, though their record against sub-.500 opponents remains volatile. The current probability sits roughly in line with standard home-field advantage adjustments—typically worth 3–4 percentage points in baseball—suggesting the market has priced in little beyond baseline factors. Value for contrarian traders may exist if Miami's recent offensive form or Mets pitching availability has shifted materially since the line was set.

Traders should monitor starting pitcher confirmations and any late roster moves, particularly regarding injury status for either side's key contributors. The daytime start time favours teams with established offensive rhythm; teams playing their second game in as many days often show measurable performance dips. Recent form heading into late May will prove decisive—if either club enters the fixture on a winning streak or facing bullpen depletion, the 42–58 split may not reflect true match probability. Weather conditions at game time, typically warmer in late May, historically favour higher-scoring outcomes that could shift betting patterns.

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 Who Will Win, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

Who Will Win 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 Who Will Win?

Zero. Who Will Win 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.