Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Who Will Win) Pick polygram.ink (preferred broker) |
55% | 45% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
55% | 45% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Live odds → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Live odds → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Live odds → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Live odds → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| 1st 5 Innings O/U 3.5 | 55% |
| Detroit Tigers vs. San Francisco Giants | 53% |
| 1st 5 Innings O/U 4.5 | 52% |
| 1st 5 Innings O/U 5.5 | 51% |
| 1st 5 Innings Spread -1.5 | 50% |
| 1st 5 Innings Spread -1.5 | 50% |
| 1st 5 Innings O/U 6.5 | 50% |
| Extra Innings | 50% |
| O/U 4.5 | 50% |
| O/U 5.5 | 44% |
| Spread -1.5 | 36% |
| O/U 6.5 | 36% |
| 1st 5 Innings O/U 2.5 | 27% |
| Spread -1.5 | 27% |
| O/U 7.5 | 24% |
| Spread -2.5 | 24% |
| Spread -2.5 | 16% |
| O/U 8.5 | 14% |
| NRFI | 0% |
Market context
The Detroit Tigers are priced at **53%** in this market, which puts them narrowly ahead of the San Francisco Giants and makes Detroit the small favourite rather than a clear market standout. That lines up with recent moneyline reads that have mostly kept the Tigers in the low-to-mid -100s range, while some books have drifted closer to pick’em, so the consensus is still “slight Detroit” rather than a strong edge.[3][8][9][13]
For a handicapper, the useful comparison is not whether Detroit should be favourite in a vacuum, but whether the market has already priced in the gap between the two clubs’ recent forms and venue effect. Earlier listings for this matchup showed Detroit around -112 to -127 depending on the book, while San Francisco sat roughly +104 to +125, which is broadly consistent with a Tigers win probability in the low-50s rather than the high-50s.[3][5][6][8][15] That means the current 53% implies modest confidence in Detroit, but not enough to dismiss a contrarian Giants position if the price pushes further towards the favourite.
The main catalysts are late line movement, confirmed line-ups, and any pitching or schedule changes before first pitch. This series has already been processed by multiple odds boards and pick pages, so any late shift is more likely to come from starting pitcher confirmation, rest patterns, or lineup scratches than from new narrative alone.[3][8][13][14] ESPN’s finished game entry also shows Detroit won the prior meeting 8-0 on 8 August, which may help explain why the market has leaned Tigers, but that result alone does not guarantee carry-over value unless the next-day matchup setup is similar.[1]
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $804K.
Methodology
This page is a comparison snapshot: one live quote, four reference venues with their key attributes, and a single execution path — every trade button routes to Who Will Win, which mirrors the Polymarket order book directly.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
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 Who Will Win. 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%.
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