Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via PolyGram) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Trade this market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Trade this market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Trade this market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Trade this market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| NRFI | 100% |
| 1st 5 Innings Spread -1.5 | 100% |
| 1st 5 Innings O/U 2.5 | 100% |
| 1st 5 Innings O/U 3.5 | 100% |
| 1st 5 Innings O/U 4.5 | 100% |
| 1st 5 Innings O/U 5.5 | 100% |
| 1st 5 Innings O/U 6.5 | 100% |
| Baltimore Orioles vs. Minnesota Twins | 86% |
| O/U 8.5 | 74% |
| Spread -1.5 | 72% |
| O/U 9.5 | 59% |
| Spread -2.5 | 56% |
| O/U 13.5 | 56% |
| Extra Innings | 50% |
| O/U 12.5 | 48% |
| O/U 10.5 | 47% |
| Spread -3.5 | 34% |
| O/U 11.5 | 33% |
| Spread -4.5 | 20% |
| Spread -1.5 | 6% |
| Spread -2.5 | 3% |
| 1st 5 Innings Spread -1.5 | 0% |
Market context
The Orioles–Twins contract is pricing at **86% YES** on Polymarket, with settlement in USDC on Polygon through conditional tokens that resolve against the official game result. In practical terms, that means the market is treating a Baltimore win as far more likely than a Minnesota win, even though the game is still just a single MLB contest and the contract can also stay open if it is postponed until completion.
That price sits above what recent on-field form alone would suggest. Minnesota won the most recent meeting **9-5** on 10 August, but Baltimore had won the two earlier meetings this season, including **8-6** and **2-1** in March, so the head-to-head has been mixed rather than one-sided.[1][4][15] Baltimore enters with a **57-62** record and Minnesota at **59-61**, while ESPN’s team lines show similar run production but slightly better pitching numbers for Baltimore, with a **4.24 ERA** versus **4.59** for Minnesota.[1] The recent sequence also matters: Baltimore had just beaten Texas **10-5** after losing three straight, while Minnesota had split a rough stretch around Milwaukee before the latest win over the Orioles.[1][18]
For a trader, the main catalysts are lineup confirmation, starting-pitcher news, and any last-minute schedule change, because the contract stays open if the game is postponed and only resolves to 50-50 if there is no make-up game or if it ends in a tie.[1] The official final statistics are the primary resolution source, so any rain delay, doubleheader adjustment, or scoring correction would matter more than pre-game sentiment.[1] On-chain, the key mechanical point is that Polymarket holders are effectively expressing a view on whether Baltimore cashes the conditional token outcome, not on the abstract strength of the teams.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $153K.
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
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.
UK Frequently Asked Questions
- 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 PolyGram. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- 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.
- 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%.
Trade Baltimore Orioles vs. Minnesota Twins on PolyGram
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