Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
72% | 28% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
72% | 28% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | See live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | See live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | See live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | See live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1st 5 Innings O/U 2.5 | 72% |
| 1st 5 Innings O/U 3.5 | 59% |
| O/U 7.5 | 57% |
| O/U 8.5 | 49% |
| NRFI | 48% |
| 1st 5 Innings O/U 4.5 | 46% |
| St. Louis Cardinals vs. Cincinnati Reds | 44% |
| O/U 9.5 | 40% |
| Spread -1.5 | 39% |
| 1st 5 Innings Spread -1.5 | 37% |
| 1st 5 Innings O/U 5.5 | 34% |
| Spread -1.5 | 33% |
| Spread -2.5 | 28% |
| 1st 5 Innings O/U 6.5 | 24% |
| Spread -2.5 | 23% |
| 1st 5 Innings Spread -1.5 | 22% |
| Extra Innings | 10% |
Market context
The St. Louis Cardinals travel to Cincinnati on 19 August for an evening fixture against the Reds, with the 44% crowd probability favouring the home side. Both clubs occupy the lower half of the National League Central standings, though their trajectories differ markedly. The Cardinals have struggled with inconsistent pitching depth and offensive production through mid-August, whilst Cincinnati has shown marginal improvement in recent weeks despite persistent roster limitations. Attendance and weather conditions at Great American Ball Park typically favour teams with established bullpen strength, a category neither side confidently occupies at present.
Historical matchups between these division rivals reveal narrow margins in close contests; since 2022, games decided by a single run have favoured whichever team held the pitching advantage entering the final innings. The current 44% probability reflects genuine uncertainty rather than a decisive edge, consistent with how markets have priced similar mid-table divisional clashes when neither team commands clear momentum.
Traders should monitor roster updates through 19 August, particularly regarding starting pitcher assignments and any late-inning relief availability. Recent reporting from MLB beat sources indicates both teams face potential absences in their catching and outfield depth, which could influence run-scoring patterns. The settlement window extends to 26 August to accommodate any postponement, though no weather disruptions are currently forecast for the scheduled evening start.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $131K.
Methodology
Sports-specific comparison page for St. Louis Cardinals vs. Cincinnati Reds. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
FAQ
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- What are live sports odds on Polymarket?
- Some top-tier matches stay open during play — you can trade the half-time probability in the 70th minute. Polymarket mid-prices update second-by-second; any frontend mirroring the order book shows the same movement.
- Which sports markets are available?
- Football (soccer) dominates — Champions League, World Cup, Premier League, La Liga, Bundesliga — followed by NFL, NBA, tennis Grand Slams, Formula 1, boxing/MMA. Resolution via official league source confirmation.
- How fast do sports winnings settle?
- Once the official league outcome is logged in the UMA Oracle (typically 1-2 hours after the final whistle), Polymarket's smart contract triggers USDC payout. To your wallet within minutes.
- What's the difference between match odds and outright odds?
- Match odds cover a single game ("Bayern beats BVB"). Outright odds are long-term aggregates ("Bayern wins the league"). Outright markets have deeper liquidity; match markets have faster resolution.
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