Cincinnati Reds vs. St. Louis Cardinals

Platform comparison

Active sub-markets

Market context

On 7 June, the Cincinnati Reds will travel to face the St. Louis Cardinals in an MLB regular-season matchup. In prediction markets, a YES share represents a bet on the Reds winning; a NO share bets on the Cardinals. The current 47% probability for YES reflects near-parity between the two teams, with the market implying a slight Cardinals lean. Settlement occurs after the game concludes, with the window remaining open until 14 June to accommodate any postponements.

The National League Central rivalry carries historical weight that shapes how traders should interpret current odds. Over the past five seasons, the Cardinals have maintained a marginally stronger record against Cincinnati, though the Reds have shown improved competitive standing in 2025. Comparable mid-season matchups between these clubs typically settle within a 45–55% range when neither team holds a significant injury crisis or playoff positioning advantage. The 47% reading sits squarely within that historical band, suggesting the market has priced in standard roster conditions.

Traders should monitor starting pitcher assignments and any late roster moves announced in the 48 hours before first pitch. Weather conditions at Busch Stadium—particularly wind direction and temperature—can influence run-scoring expectations and shift probabilities for lower-scoring contests. Recent form matters: Cincinnati's performance in its preceding three games and St. Louis's bullpen availability heading into the fixture will inform whether the current probability drifts materially. Any injury announcements to key position players or confirmed absences from either dugout would trigger repricing before the settlement window closes.

Methodology

We track Cincinnati Reds vs. St. Louis Cardinals on the five venues with material liquidity for prediction markets. Live odds come from the Polymarket Polygon order book — the only source that ships real-time data under an open licence. For Kalshi, Betfair and Manifold we list platform attributes (fee, KYC, settlement, payment) instead of fabricated odds, because their APIs use non-comparable contract definitions.

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

Is this market available outside the US?

Prediction Market UK 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.

What does it cost to trade on Prediction Market UK?

Zero. Prediction Market UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

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.