St. Louis Cardinals vs. New York Mets

Platform comparison

Active sub-markets

Market context

The St. Louis Cardinals travel to face the New York Mets on 10 June at 7:10 PM ET in a regular-season matchup. The 51% crowd-implied probability reflects near-parity between the two franchises, with the settlement window extending to 17 June to accommodate potential postponements. For conditional order strategies, this market's resolution mechanism hinges on game completion; any cancellation without a make-up fixture triggers a 50-50 split, which traders should account for when setting contingent triggers around weather forecasts or scheduling announcements in early June.

Historically, Cardinals-Mets matchups have favoured neither side decisively. Over the past five seasons, these clubs have split regular-season contests fairly evenly, with home-field advantage typically accounting for 2–3 percentage points in implied probability. The current 51% reading suggests minimal edge pricing, consistent with how markets treat evenly matched divisional opponents. Traders automating position sizing should note that this probability band—within 5 points of 50-50—often exhibits higher volatility as new information surfaces, making it suitable for algorithmic rebalancing rather than static allocation.

Key variables to monitor include starting pitcher announcements (typically confirmed 48 hours before first pitch), injury reports from both rosters, and weather conditions affecting the New York area. Recent roster moves or bullpen availability shifts can shift implied probability by 3–5 points. Automated feeds tracking MLB official communications will flag these catalysts; integrating them into conditional order logic allows traders to execute position adjustments before manual market participants react.

Methodology

We track St. Louis Cardinals vs. New York Mets 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 Polymarket Review UK, 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.

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'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 Polymarket Review UK?

Zero. Polymarket Review UK 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.