Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi vs Polymarket) Pick polygram.ink (preferred broker) |
78% | 22% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
78% | 22% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1st 5 Innings O/U 2.5 | 78% |
| 1st 5 Innings O/U 3.5 | 66% |
| 1st 5 Innings O/U 4.5 | 53% |
| O/U 8.5 | 52% |
| NRFI | 51% |
| Cincinnati Reds vs. St. Louis Cardinals | 46% |
| 1st 5 Innings O/U 5.5 | 40% |
| O/U 9.5 | 39% |
| Spread -1.5 | 38% |
| Spread -1.5 | 34% |
| 1st 5 Innings Spread -1.5 | 32% |
| O/U 10.5 | 32% |
| 1st 5 Innings O/U 6.5 | 29% |
| 1st 5 Innings Spread -1.5 | 28% |
| Spread -2.5 | 28% |
| Spread -2.5 | 24% |
| Extra Innings | 10% |
Market context
The Cincinnati Reds are due to face the St. Louis Cardinals in a July 26 game with the market currently pricing a **46%** chance on the Reds side, which is close to a coin flip and implies only a modest edge to St. Louis if the crowd price is taken at face value. That sits broadly in line with recent form-based pricing around this rivalry: ESPN listed the teams as nearly even for the July 25 matchup, with St. Louis about 59.8% pre-game, and the Cardinals then won that game, while the clubs split earlier June meetings in a stretch that included a Cardinals sweep of a series and another strong home result[4][2][3].
For traders, the main catalysts are the confirmed starting pitchers, any late line-up rest decisions, and whether the clubs carry over bullpen fatigue from the previous night’s game. The scheduled settlement window ending on 2026-08-02 is relevant because postponed games can still be completed later and keep the contract open, while a cancellation or tie resolves 50-50 under the rules. In cross-platform terms, the key watchpoint is whether sportsbook money moves away from the current near-even market and whether analyst models continue to lean Cardinals after accounting for home-field advantage and recent head-to-head results; absent a major pitching surprise, a 46% Reds price suggests the prediction market is not giving Cincinnati a clear edge despite the matchup being priced as competitive[1][2][4].
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $290K.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Kalshi vs Polymarket, 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?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- Is this market available outside the US?
- Polymarket itself is geo-blocked in the US/UK/EU. Always check the legal status of prediction markets in your jurisdiction before trading.
- 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 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.
Trade Cincinnati Reds vs. St. Louis Cardinals on Kalshi vs Polymarket
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