Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Sport Prediction) Pick polygram.ink (preferred broker) |
50% | 50% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Live odds → |
Polymarket (direct) polymarket.com |
50% | 50% | 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 |
|---|---|
| Cleveland Guardians vs. Detroit Tigers | 50% |
| O/U 5.5 | 48% |
| O/U 6.5 | 38% |
| 1st 5 Innings O/U 2.5 | 35% |
| Spread -1.5 | 33% |
| Spread -1.5 | 33% |
| O/U 7.5 | 29% |
| 1st 5 Innings O/U 3.5 | 27% |
| 1st 5 Innings Spread -1.5 | 26% |
| O/U 8.5 | 25% |
| Spread -2.5 | 23% |
| Spread -2.5 | 21% |
| 1st 5 Innings O/U 4.5 | 19% |
| O/U 9.5 | 17% |
| Extra Innings | 16% |
| 1st 5 Innings O/U 5.5 | 14% |
| 1st 5 Innings Spread -1.5 | 13% |
| 1st 5 Innings O/U 6.5 | 11% |
| NRFI | 0% |
Market context
The Cleveland Guardians face the Detroit Tigers on 13 August at 1:10 PM ET in a regular-season matchup between AL Central rivals. The even 50% implied probability reflects genuine competitive uncertainty, though contextual factors favour neither side decisively. Both clubs have cycled through periods of strength and weakness throughout the 2026 season, with neither establishing sustained dominance in head-to-head play.
Historical matchups between these franchises show marginal differences in home-field advantage and recent form carry modest predictive weight in single-game outcomes. Over the past five seasons, the Guardians have held a slight edge in the division, yet the Tigers have demonstrated capacity to compete fiercely in August contests when roster depth becomes material. The 50-50 split reflects that single games between comparable mid-table AL Central teams typically lack the statistical skew that emerges in season-long performance differentials.
Traders should monitor roster availability in the 48 hours preceding the fixture, particularly injury status among starting pitchers and key position players. Weather conditions at the venue—temperature and wind patterns—can materially affect outcomes in August baseball. The Tigers' recent bullpen performance and the Guardians' offensive consistency against right-handed starters warrant attention. Any late-breaking lineup adjustments or managerial decisions regarding rest days could shift the probability, though such moves rarely emerge more than 24 hours before first pitch. The settlement window extends to 20 August, providing adequate time for postponement resolution should weather intervene.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $535K.
Methodology
Sports-specific comparison page for Cleveland Guardians vs. Detroit Tigers. Polymarket's live quote (Polygon order book) plus platform attributes for the three reference venues. Sports markets reward liquidity — Polymarket and Betfair are materially deeper than Kalshi or Manifold.
Resolution & payout
Sports markets typically settle on official final-whistle plus league confirmation. Polymarket uses UMA Optimistic Oracle with a source URL per contract — usually official league data feeds or ESPN/Soccerway. Two-hour dispute window, then smart-contract payout in USDC.
UK Frequently Asked Questions
- Are prediction markets better than sports betting?
- Prediction markets tend toward tighter odds than bookmakers because they use peer-to-peer exchange rather than bookmaker margin. On major matches, Polymarket quotes typically sit 2-5% closer to the true probability model than bet365 or DraftKings.
- When do sports markets resolve?
- Typically within hours of the official final whistle. Polymarket uses UMA Optimistic Oracle with source URLs pointing at official league data feeds — e.g. the Premier League for EPL markets, UEFA for Champions League, FIFA for World Cup.
- 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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