St. Louis Cardinals vs. New York Mets

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Active sub-markets

Market context

On 10 June at 7:10 PM Eastern Time, the St. Louis Cardinals will face the New York Mets in a regular-season Major League Baseball fixture. A prediction market has been created to allow traders to wager on the outcome: purchasing a YES share represents backing the Cardinals to win, whilst a NO share represents backing the Mets. The current crowd-implied probability of 51% YES reflects near-parity between the two sides, suggesting the market sees this as a closely matched contest. The settlement window remains open until 17 June 2026 at 23:10 UTC, allowing time for any postponements to be resolved before final determination.

Historical matchups between these franchises provide context for evaluating the 51–49 split. Over their last ten meetings, the Cardinals have held a slight edge, winning six of the ten contests. However, regular-season form fluctuates considerably; the Mets' recent performance in June typically shows variance depending on their pitching rotation depth and whether key position players are managing injuries. The Cardinals' home-field advantage (if applicable) or road conditions can shift expected win probability by 2–4 percentage points in either direction.

Traders should monitor roster announcements in the days before the fixture, particularly any late injuries to starting pitchers or primary batters. Weather conditions at the venue—wind direction and temperature affecting ball carry—warrant attention, as do any bullpen availability issues following preceding games. Official MLB injury reports released 24 hours before first pitch will be the most reliable indicator of lineup changes that could shift the probability meaningfully from its current equilibrium.

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 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.

Is this market available outside the US?

Prediction Market UK 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 does it cost to trade on Prediction Market UK?

Zero. Prediction Market 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.

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.