St. Louis Cardinals vs. Cincinnati Reds

Platform comparison

Active sub-markets

Market context

The St. Louis Cardinals and Cincinnati Reds were due to play on Friday night in Cincinnati, with the market trading close to a coin flip at 48% for the Reds. That implies the Cardinals are only a narrow market favourite, and the consensus is for a tight matchup rather than a clear edge. In that sort of price range, recent form matters, but so do small lineup and pitching changes that can move a game more than the headline probability suggests.

The historical read is straightforward: games priced around 45-55% often hinge on who gets the better starting pitching announcement and whether either club is missing a key bat. The Reds have already shown both sides of the coin against St Louis in recent meetings, including a 4-1 win behind Andrew Abbott on 22 June 2025 and a shutout loss in another stretch noted by local coverage, which underlines how volatile these divisional matchups can be. A 48% YES price leaves limited margin for error, so the value case is usually whichever side is backed by the confirmed starter, bullpen freshness, and current lineup strength once posted.

The main catalyst is scheduling. ESPN listed the 22 May game as postponed because of rain, with a makeup date of 23 May, so the market can stay open and shift on the basis of the rescheduled line-up and any pitching compaction that follows. That matters because a rain delay or doubleheader-style adjustment can change who starts, who is rested, and which bullpen is more exposed. Traders should watch official team announcements and the league’s final game notes, since those will determine whether the market still reflects the pre-rain setup or a materially different contest.

Sources: 1 · 2 · 3 · 4 · 5

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

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.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.