Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
87% | 13% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
87% | 13% | 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 | 87% |
| 1st 5 Innings O/U 3.5 | 69% |
| O/U 8.5 | 59% |
| 1st 5 Innings O/U 4.5 | 56% |
| 1st 5 Innings Spread -1.5 | 50% |
| Extra Innings | 50% |
| O/U 9.5 | 49% |
| Spread -1.5 | 47% |
| 1st 5 Innings O/U 5.5 | 43% |
| O/U 10.5 | 41% |
| Washington Nationals vs. Atlanta Braves | 37% |
| Spread -2.5 | 37% |
| 1st 5 Innings O/U 6.5 | 35% |
| NRFI | 33% |
| Spread -1.5 | 27% |
| 1st 5 Innings Spread -1.5 | 20% |
| Spread -2.5 | 18% |
Market context
The Washington Nationals and Atlanta Braves meet at Truist Park in a regular-season game scheduled for 7:15 p.m. ET, and the current crowd-implied **37% YES** price points to a modest underdog view on Washington rather than a strong upset case. Atlanta have been the better side overall this year, but the market is still leaving room for a Nationals win, which is consistent with how baseball prices often compress when one team has home advantage but the matchup has already produced swings in both directions.[9][19]
Recent head-to-head results make that price easier to read. The teams have already split the season series in lopsided fashion at times: Atlanta took three of four in Washington in April, while Washington won two of three in Atlanta in May, including a 2-1 result and a 2-0 shut-out backed by strong pitching.[16][19][2] That kind of alternating form matters for prediction markets because it keeps settlement risk tied to the day’s starting pitching, rather than a simple season-long power rating.[1][4][16]
For traders, the main catalysts are the confirmed line-ups, the announced starters, and any late changes that affect how the game is likely to play out before the 23:15 UTC settlement deadline. MLB’s game listing frames this as a pre-deadline clash, so a postponed start would keep the market open until completion, while a cancellation or tie would settle 50-50 under the contract rules.[19] On-chain, the final outcome will feed directly into USDC settlement, so price action should remain sensitive to any pre-game roster news and to broader risk appetite if BTC or ETH volatility is pulling liquidity across prediction markets, but the contract itself resolves purely on the official final result.[19]
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $335K.
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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