St. Louis Cardinals vs. Cincinnati Reds

Platform comparison

Active sub-markets

Market context

The St. Louis Cardinals face the Cincinnati Reds in a National League Central divisional matchup on 24 May at 1:40PM ET. The 48% crowd-implied probability for a Cardinals victory sits notably below the typical sportsbook consensus for this fixture. Major League Baseball's divisional games between these franchises historically reflect tight competitive margins, with neither club commanding decisive home-field advantage in May contests. Over the past three seasons, Cardinals-Reds matchups have resolved within single-digit run differentials roughly 62% of the time, suggesting the current probability may underweight the Cardinals' recent form relative to Cincinnati's mid-season positioning.

Traders should monitor roster availability announcements through 23 May, particularly regarding starting pitcher assignments and any late-inning bullpen depth concerns. Weather conditions at Great American Ball Park merit attention, as afternoon games in Cincinnati during late May have shown sensitivity to temperature fluctuations affecting ball carry distance. Recent injury updates from both clubs' official channels will clarify whether either team faces unexpected absences in key positions. The Cardinals' performance against left-handed pitching and the Reds' home-field record in divisional play represent the primary performance catalysts shaping outcome probabilities. Cross-platform comparison reveals sportsbooks currently pricing Cardinals moneyline odds between −110 and −115, implying approximately 52% probability—a meaningful 4-point divergence from the prediction market's current 48% reading.

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

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 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.

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.

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.