Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Qué Es) Pick polygram.ink (preferred broker) |
75% | 25% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | See live odds → |
Polymarket (direct) polymarket.com |
75% | 25% | 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 | 75% |
| 1st 5 Innings O/U 3.5 | 61% |
| O/U 7.5 | 52% |
| 1st 5 Innings O/U 4.5 | 48% |
| Baltimore Orioles vs. St. Louis Cardinals | 46% |
| O/U 8.5 | 44% |
| NRFI | 42% |
| 1st 5 Innings Spread -1.5 | 37% |
| 1st 5 Innings O/U 5.5 | 37% |
| Spread -1.5 | 36% |
| O/U 9.5 | 34% |
| Spread -1.5 | 33% |
| 1st 5 Innings O/U 6.5 | 27% |
| Spread -2.5 | 27% |
| 1st 5 Innings Spread -1.5 | 24% |
| Spread -2.5 | 23% |
| Extra Innings | 13% |
Market context
Polymarket is pricing this game at 46% for Baltimore, which leaves St. Louis as the modest favourite in a market that is still close enough for late line-up and pitching information to matter. The contract settles on the official result, paid in USDC on Polygon through conditional tokens, so the practical question is simply which club wins the completed game rather than any wider series narrative.
The current price sits in line with a fairly even matchup on paper: pregame listings showed the Cardinals around 66–66 and the Orioles around 63–68, with probable starters Chris Bassitt for Baltimore and Matthew Liberatore for St. Louis. Comparable low-40s to high-40s prices usually reflect a home team with the slight edge but enough volatility for one bullpen inning, defensive change or scoring burst to swing the contract.
For traders, the main catalysts are final line-ups, any late scratch news, and whether the game completes on schedule. Orioles injury context has been heavy, with multiple 10-day and 60-day IL placements reported around the club, including Félix Bautista, Zach Eflin, Ryan Mountcastle and Jordan Westburg, while the Cardinals have also carried absences of their own. If the game is postponed and made up later, the market stays open; if it is cancelled outright or finishes tied, it resolves 50-50.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $217K.
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 Polymarket Qué Es, 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 Polymarket Qué Es. 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.
- Do I need to KYC for this market?
- On Polymarket directly, no — it's wallet-based. Intermediary brokers like Polymarket Qué Es trigger KYC only above $1,500 of lifetime trading volume; under that you trade pseudonymously with a single wallet address.
Trade Pronóstico: Baltimore Orioles vs. St. Louis Cardinals on Polymarket Qué Es
Live order book, 0% fees, USDC settlement in seconds.
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