Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
79% | 21% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
79% | 21% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open live market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open live market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open live market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open live market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1st 5 Innings O/U 2.5 | 79% |
| 1st 5 Innings O/U 3.5 | 68% |
| O/U 7.5 | 62% |
| O/U 8.5 | 54% |
| 1st 5 Innings O/U 4.5 | 54% |
| NRFI | 51% |
| St. Louis Cardinals vs. Los Angeles Angels | 44% |
| O/U 9.5 | 43% |
| 1st 5 Innings O/U 5.5 | 41% |
| Spread -1.5 | 40% |
| Spread -1.5 | 34% |
| 1st 5 Innings Spread -1.5 | 34% |
| 1st 5 Innings O/U 6.5 | 30% |
| Spread -2.5 | 28% |
| 1st 5 Innings Spread -1.5 | 25% |
| Spread -2.5 | 24% |
| Extra Innings | 8% |
Market context
The St. Louis Cardinals and Los Angeles Angels are due to play a single MLB game in which the contract resolves to the listed winner, with a 50-50 outcome only if the game is cancelled with no make-up or ends in a tie. With the crowd at 44% YES for St. Louis, the market is pricing the Cardinals as a slight underdog rather than a strong favourite, which is broadly consistent with a close moneyline contest rather than a lopsided spot.
For comparison, these event contracts usually track the same basic drivers as the underlying baseball market: starting pitcher quality, late lineup changes, and whether a game is likely to be completed on schedule. In on-chain terms, the settlement path is straightforward if the result is official, with USDC used for payout rather than any direct link to BTC or ETH price action; broader crypto conditions matter mainly through liquidity and risk appetite, not the baseball result itself.
Traders should watch for the official line-up cards, any starting pitcher changes, and weather or travel updates that could affect whether the game starts and finishes normally. If the market is still open close to first pitch, price action can move sharply on late team news, and any postponement would keep the contract live until a completed game is played.
Sources: 1
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $316K.
Methodology
Methodologically this overview focuses on on-chain pricing: Polymarket's live mid comes from the Polygon conditional-token order book and settles automatically in USDC. The other three venues — Kalshi, Betfair, Manifold — sit alongside as off-chain reference points so you can see how the contract translates across regulatory and settlement regimes.
Resolution & payout
Settlement is on-chain via UMA Optimistic Oracle. A proposer posts the outcome with a bond, a two-hour dispute window opens, then the smart contract lifts winning conditional tokens to 1 USDC and sends payments to holders' wallets automatically. No withdrawal fees beyond Polygon gas.
Off-chain venues (Kalshi, Betfair, Smarkets) settle in local fiat through bank-side clearing — faster than SWIFT, slower than on-chain. Manifold pays no real cash.
FAQ
- What are crypto prediction markets?
- Crypto prediction markets are on-chain smart contracts where you buy YES or NO shares on a future crypto event (e.g. "BTC above $100k by year-end"). The market price between 0¢ and 100¢ is the implied probability.
- Why USDC and not ETH or USDT?
- USDC is the Polygon standard — audited reserves (Circle, monthly attestation), deepest order book, low gas costs. ETH volatility would distort probability quotes; USDT has thinner Polygon liquidity than USDC.
- Can I use Bitcoin directly?
- No, Polymarket operates exclusively in USDC on Polygon. You can bridge BTC to USDC via an exchange or bridge service and deposit on Polygon — typically 10-30 minutes processing time.
- How does UMA secure the resolution?
- The UMA Optimistic Oracle uses a bond system: a proposer posts a bond, a two-hour challenge window opens. On dispute the losing side forfeits the bond — financial incentive for honest resolution.
- How volatile are crypto prediction markets?
- Crypto markets react to spot prices — a 5% BTC move typically shifts a "BTC above X by date" market 10-20%. Polymarket crypto market liquidity is usually six-figure USD, sufficient for active trading.
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