St. Louis Cardinals vs. Cincinnati Reds

Platform comparison

Active sub-markets

Market context

The Cardinals and Reds meet in a game that sits close to a coin flip in the market, and the recent head-to-head record gives little room for a strong lean. These clubs have traded results across recent seasons, with the Cardinals holding the edge overall in the rivalry, but Cincinnati have also shown they can take series games in St. Louis. Last June, the Reds avoided a sweep with a 4-1 win, while more recent reporting from the Cardinals side included a 3-0 shutout over Cincinnati, underlining how quickly the matchup can swing with starting pitching and early scoring.

For traders, the main watchpoints are the confirmed starters, any late bullpen absences, and whether either side is managing a recent injury load after a compact May schedule. Official line-up and pitching announcements close to first pitch will matter more than the market’s 49% YES number, because this pairing has often been decided by a single starter’s command or one big inning. If either club is without a key bat or late-inning reliever, the balance shifts quickly in a game that has already priced as close to even.

Sources: 1 · 2 · 3 · 4 · 5

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

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.

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.

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.