Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via BTC Prediction) Pick polygram.ink (preferred broker) |
81% | 19% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open live market → |
Polymarket (direct) polymarket.com |
81% | 19% | 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 | 81% |
| 1st 5 Innings O/U 3.5 | 69% |
| 1st 5 Innings Spread -2.5 | 59% |
| O/U 8.5 | 56% |
| 1st 5 Innings O/U 4.5 | 54% |
| NRFI | 52% |
| O/U 9.5 | 48% |
| Chicago White Sox vs. Baltimore Orioles | 45% |
| 1st 5 Innings O/U 5.5 | 43% |
| Spread -1.5 | 39% |
| 1st 5 Innings Spread -1.5 | 36% |
| Spread -1.5 | 35% |
| 1st 5 Innings O/U 6.5 | 34% |
| 1st 5 Innings Spread -1.5 | 28% |
| 1st 5 Innings Spread -2.5 | 14% |
| Extra Innings | 7% |
Market context
The Chicago White Sox face the Baltimore Orioles tonight at Oriole Park at Camden Yards, with first pitch scheduled for 6:35pm EDT. The White Sox hold a 45% crowd-implied probability of winning outright, despite the Orioles being favoured by -134 on the moneyline and -1.5 on the run line[2]. This market resolves to the White Sox if they win, to the Orioles if they win, and remains open if postponed until completion[1]. Settlement occurs in USDC on-chain, with the contract tied to the official final statistics recognised by MLB[7].
Historically, underdogs with moneylines near +114 in mid-season matchups have resolved around 42–48% win rates when pitching ERAs are comparable, as seen in the 2024 White Sox–Orioles series where Sean Burke’s 3.23 ERA mirrored Shane Baz’s recent form[2][7]. The current 45% probability aligns with this range, suggesting the market is pricing in a tight contest rather than a clear favourite, consistent with comparable cases where both teams averaged 4.6 runs per game[5].
Traders should monitor Sean Burke’s live pitching performance and Shane Baz’s recent outing, as both have given up three earned runs or fewer in seven of their last eight games[7]. Any delay due to weather or injury could shift the USDC settlement window, while whale flows into BTC or ETH may correlate with volatility in the contract price if macro data releases coincide[2]. Watch for real-time updates on CBS Sports or ESPN for live scoring and expert picks that may influence funding rates[9].
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $289K.
Methodology
This page reads Chicago White Sox vs. Baltimore Orioles on-chain. Polymarket's quote comes directly from the Polygon order book — the only comparable venue with on-chain settlement. Kalshi (USD, off-chain), Betfair (GBP/EUR, off-chain) and Manifold (play-money) are listed alongside for venue context. Every CTA routes to BTC Prediction, which mirrors the Polymarket order book directly.
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
- 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.
- Which crypto markets exist on Polymarket?
- Currently active markets include BTC/ETH/SOL price targets, halving dates, ETF approvals, hard-fork outcomes and Layer-2 TVL thresholds. The list updates weekly; biggest volume sits on BTC and ETH price forecasts.
- Are crypto prediction markets taxable in the US?
- In the US, prediction market gains are typically treated as ordinary income or short-term capital gains depending on holding period. Consult a tax professional for your specific situation — we cannot provide tax advice.
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