Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via March Madness Predictions) Pick polygram.ink (preferred broker) |
70% | 30% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
70% | 30% | 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 | 70% |
| 1st 5 Innings O/U 3.5 | 62% |
| O/U 6.5 | 57% |
| 1st 5 Innings O/U 4.5 | 56% |
| 1st 5 Innings O/U 5.5 | 54% |
| 1st 5 Innings O/U 6.5 | 53% |
| Philadelphia Phillies vs. St. Louis Cardinals | 50% |
| 1st 5 Innings Spread -1.5 | 50% |
| 1st 5 Innings Spread -1.5 | 50% |
| Extra Innings | 50% |
| O/U 7.5 | 43% |
| Spread -1.5 | 36% |
| O/U 8.5 | 36% |
| Spread -1.5 | 32% |
| Spread -2.5 | 26% |
| O/U 9.5 | 25% |
| Spread -2.5 | 22% |
| NRFI | 0% |
| O/U 5.5 | 0% |
Market context
The Phillies’ 6–5 win in St. Louis on Monday showed why a market sitting at **50%** is vulnerable to small shifts rather than a clear baseline edge: Philadelphia has generally been the steadier side in the head-to-head, going 13–7 in the last 20 meetings with the Cardinals, while also taking the most recent game on the schedule here.[18][5] That said, recent comparable results have split the frame in both directions, with St. Louis beating Philadelphia 2–0 in April and the Phillies edging the Cardinals 2–1 in May, so past meetings suggest narrow margins rather than a dominant matchup trend.[14][15]
For traders, the key catalysts are lineup confirmation, starting-pitching news and bullpen availability. In the latest preview, Aaron Nola was listed day-to-day with a knee issue, while the Phillies’ injury list also included Rafael Marchan and Tanner Banks, which matters because bullpen usage has already been tested in this series.[10][2] The Cardinals were reported with Ramon Urias and Max Rajcic on the 60-day injured list, and recent form has been mixed: Philadelphia was 7–3 over its previous 10 with a 3.29 ERA and an 18-run margin, while St. Louis was 5–5 with a 3.83 ERA and only a small positive run differential.[10][19] CBS also noted Cristopher Sánchez had been less effective since mid-June, posting a 4.47 ERA over his previous 10 outings, which is the kind of pitcher-specific drift that can move a tight market late.[7]
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $239K.
Methodology
Sports-specific comparison page for Philadelphia Phillies vs. St. Louis Cardinals. 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.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- Can I bet on individual matches?
- Yes, Polymarket lists every major Premier League / Champions League / World Cup match as its own market. Liquidity varies — top matches like El Clásico or a semi-final often have six-figure pools, lower-league games closer to three-figure.
- 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.
- Can I import form data and lineups?
- This page shows the live Polymarket quote as an implied probability. Form data and lineups must be researched separately via sports data providers (e.g. Soccerway, ESPN, FBref) — we surface the market probability, not the sport analysis.
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