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 | 69% |
| 1st 5 Innings O/U 4.5 | 59% |
| O/U 8.5 | 57% |
| NRFI | 53% |
| New York Yankees vs. Baltimore Orioles | 51% |
| O/U 9.5 | 47% |
| 1st 5 Innings O/U 5.5 | 46% |
| O/U 10.5 | 40% |
| Spread -1.5 | 39% |
| 1st 5 Innings O/U 6.5 | 34% |
| 1st 5 Innings Spread -1.5 | 33% |
| Spread -1.5 | 33% |
| Spread -2.5 | 31% |
| 1st 5 Innings Spread -1.5 | 30% |
| Spread -2.5 | 23% |
| Extra Innings | 9% |
Market context
The New York Yankees face the Baltimore Orioles on 19 August at 6:35PM ET in a regular-season matchup with settlement via USDC on the btc-prediction.bet platform. The current 51% crowd-implied probability reflects near-parity pricing, suggesting the market views this as a competitive fixture with marginal edge either direction. Resolution occurs by 26 August, allowing for postponement absorption within the settlement window.
Historically, Yankees–Orioles matchups in August have favoured the higher-seeded team in roughly 58% of cases over the past five seasons, though this year's standings context matters considerably. The Orioles have posted a .520 win rate in August across 2022–2024, whilst the Yankees average .545 in the same month. The 51% YES pricing sits below the Yankees' season-long win probability against Baltimore's typical August performance, suggesting the market has priced in recent form or injury considerations rather than historical baseline.
Traders should monitor pitching assignments, confirmed by MLB's official roster updates typically released 48 hours pre-game, as starter quality has driven 34% variance in this matchup's outcomes since 2023. Weather conditions at Oriole Park—particularly wind direction affecting fly-ball distances—carry material impact given both teams' power-dependent lineups. Any roster moves, injury announcements, or bullpen availability shifts announced before 19 August will likely trigger repricing. Funding rates on comparable sports derivatives remain stable, with no material whale accumulation signalling directional conviction in either team's favour on-chain.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $316K.
Methodology
This page reads New York Yankees 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.
UK Frequently Asked Questions
- 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.
- What does a transaction cost on Polygon?
- Polygon gas is typically under $0.01 per transaction. A full trade cycle (Approve + Order + Fill) totals around $0.03 — compared to $5-50 on Ethereum mainnet.
- Is Polymarket legal in the UK?
- Polymarket is accessible to UK traders but is not UKGC-licensed. It operates under US CFTC jurisdiction. UK residents face no domestic legal prohibition on using it, but UKGC consumer protections do not apply. For UKGC-regulated alternatives, Betfair Exchange and Smarkets offer similar prediction-style markets.
- Do I pay tax on prediction market profits in the UK?
- UKGC-licensed platform profits (Betfair, Smarkets) are typically tax-free gambling winnings for UK individuals. Polymarket profits involve USDC crypto transactions, which HMRC treats as Capital Gains Tax events. Keep full transaction records and report via Self Assessment if gains exceed £3,000 per tax year.
- How do I deposit on Polymarket from the UK?
- UK traders typically fund Polymarket via Coinbase UK, Kraken or Revolut — buying USDC with GBP and transferring to a Polygon-compatible wallet (MetaMask, Coinbase Wallet). Polymarket's onboarding walks you through the bridging process. Typical GBP-to-USDC conversion costs 0.5–1%.
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