St. Louis Cardinals vs. New York Mets

Platform comparison

Active sub-markets

Market context

On 9 June 2026, the St. Louis Cardinals will travel to face the New York Mets in an MLB regular-season matchup scheduled for 7:10 PM Eastern Time. In prediction markets, traders purchase YES or NO shares representing their belief in a specific outcome. A YES share pays out if the Cardinals win; a NO share pays out if the Mets win. The current crowd-implied probability showing 100% YES suggests traders are pricing in an extremely high likelihood of a Cardinals victory, though this figure warrants scrutiny given the inherent uncertainty in any single baseball game.

Historical data on mid-season divisional matchups between these franchises shows considerable volatility. The Cardinals and Mets have alternated dominance over recent seasons, with neither club establishing consistent superiority in head-to-head play. A 100% probability in sports markets is exceptionally rare and typically reflects either incomplete market participation, a data error, or an unusual circumstance such as the Mets being unable to field a competitive roster due to injuries or roster depletion. Standard market pricing for evenly matched teams hovers between 45% and 55% for either outcome.

Traders should monitor roster announcements, starting pitcher assignments, and any late-breaking injury reports through to the settlement deadline on 16 June. Weather conditions at game time and bullpen availability often prove decisive in June matchups. The settlement window extends one week beyond the scheduled game date to accommodate potential postponements, which occur occasionally during the baseball season. Official MLB statistics will serve as the authoritative resolution source.

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 Prediction Market UK, which mirrors the Polymarket order book directly.

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 Prediction Market 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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Prediction Market UK triggers a quick verification flow that finishes in 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.