St. Louis Cardinals vs. Cincinnati Reds

Platform comparison

Active sub-markets

Market context

The St. Louis Cardinals travel to Cincinnati on 24 May for a National League Central divisional matchup. The crowd-implied probability of 48% for a Cardinals victory reflects a near-even assessment, with the market pricing this as a marginal underdog situation for St. Louis despite their historical edge in this rivalry.

The Cardinals hold a substantial historical advantage in head-to-head records against Cincinnati, winning roughly 55% of regular-season meetings over the past decade. However, recent divisional form matters more than legacy records in May. The Reds have shown inconsistency in early-season performance, whilst the Cardinals' record at this juncture will determine whether the 48% probability undervalues or overvalues St. Louis. A Cardinals team performing above .500 entering this fixture would typically command closer to 52–55% implied probability; conversely, a struggling Cardinals outfit might justify the current discount.

Traders should monitor starting pitcher assignments and bullpen availability, particularly if either team has deployed relievers heavily in the preceding days. Weather conditions at Great American Ball Park—notably wind direction and temperature—carry measurable impact on run-scoring in Cincinnati's ballpark. Recent injury reports from both clubs, released typically 24 hours before first pitch, could shift the probability meaningfully. The settlement window extends to 31 May, allowing for postponement resolution should weather intervene, though May games rarely encounter such delays.

Methodology

This page reviews St. Louis Cardinals vs. Cincinnati Reds across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at PolyGram — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Is this market available outside the US?

PolyGram 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.

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.

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.