St. Louis Cardinals vs. Cincinnati Reds

Platform comparison

Active sub-markets

Market context

The Cardinals visit Cincinnati on 24 May for a midweek National League Central matchup. Polymarket currently prices the Cardinals' victory at 48%, reflecting a near-even contest with a slight lean toward the Reds. The settlement window extends to 31 May, allowing for rescheduling should weather or other circumstances postpone the fixture.

Historical performance between these clubs provides context for reading the current probability. Over the past three seasons, the Cardinals have held a marginal edge in head-to-head records, though both franchises have experienced significant roster turnover. The Reds' home-field advantage at Great American Ball Park typically narrows the gap in win probability; teams playing in Cincinnati average roughly 2–3 percentage points higher win likelihood than neutral-site projections suggest. Current divisional standings and May form will influence whether traders view the 48% Cardinals price as undervalued or appropriately calibrated.

Pitching assignments represent the primary catalyst for movement in this contract. The Cardinals' rotation depth and the Reds' recent bullpen usage patterns merit monitoring ahead of official lineups, typically announced 24 hours before first pitch. Weather conditions at game time—particularly wind direction and temperature affecting fly-ball carry—can shift outcomes in a low-scoring environment. Any late roster moves, injury reports affecting key position players, or unexpected managerial decisions in the preceding days may trigger repricing on-chain. Traders should verify the official MLB schedule confirmation, as spring weather occasionally forces postponements in the Midwest.

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 PolyGram, 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

Where can I trade this market with the lowest fees?

On PolyGram, 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 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.