Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Legal UK) Pick polygram.ink (preferred broker) |
74% | 26% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Trade this market → |
Polymarket (direct) polymarket.com |
74% | 26% | 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 |
|---|---|
| 1st 5 Innings O/U 2.5 | 74% |
| 1st 5 Innings O/U 3.5 | 59% |
| O/U 7.5 | 53% |
| NRFI | 48% |
| Detroit Tigers vs. Seattle Mariners | 46% |
| 1st 5 Innings O/U 4.5 | 44% |
| O/U 8.5 | 42% |
| Spread -1.5 | 36% |
| 1st 5 Innings O/U 5.5 | 34% |
| Spread -1.5 | 34% |
| O/U 9.5 | 33% |
| 1st 5 Innings Spread -1.5 | 31% |
| Spread -2.5 | 27% |
| 1st 5 Innings Spread -1.5 | 26% |
| 1st 5 Innings O/U 6.5 | 24% |
| Spread -2.5 | 24% |
| Extra Innings | 9% |
Market context
Detroit and Seattle meet in a scheduled MLB game at T-Mobile Park, with the market settling on the outright winner; if the game is postponed it stays open until completion, while a cancellation or tie resolves 50-50 under the market rules. The current **46% YES** price sits close to a coin-flip, which is consistent with a matchup where neither side has a decisive pre-game edge and the market is effectively asking whether Detroit can outperform a marginally stronger home profile.
Recent head-to-head results show why the number is not much lower: Detroit beat Seattle 5-4 on 7 June after also winning 7-3 on 5 June, so the Tigers have already proved they can take this pairing in tight and higher-scoring games.[2][6][7] At the same time, Seattle’s broader run prevention has been better in the reported 2026 sample, with ESPN listing the Mariners at a 2.62 ERA and 0.95 WHIP versus Detroit’s 4.32 ERA and 1.44 WHIP, which helps explain why the market is not pricing Detroit as a clear favourite.[1]
Traders should watch the confirmed starting pitchers, line-up announcements and any late scratch or weather-driven delay, because a one-game MLB market can move materially on those dependencies. The official first-pitch listing is 9:40 p.m. ET on 4 August, and any postponement would keep the contract live until the make-up game is completed rather than forcing a settlement.[14] On accessibility, “no-KYC up to $1,500” generally means a user can trade this market without full identity verification until cumulative activity reaches that threshold, but the market’s availability remains subject to local rules; German users face GlüStV restrictions on unauthorised online gambling-style products, while US traders should note that the CFTC’s jurisdiction can apply where a platform or contract is deemed within US derivatives law.
Live Data & Statistics
Live stats load when the match begins. Current market odds are shown above. Trading volume: $426K.
Methodology
This overview of Detroit Tigers vs. Seattle Mariners reviews the four comparable platforms from a regulatory perspective: which is accessible in your jurisdiction, where KYC kicks in, how the platform is classified by your country of residence. Live probability is the Polymarket mid; comparison columns show regulatory status, KYC thresholds and settlement options for each platform.
Resolution & payout
On Polymarket, resolution runs on-chain via UMA Optimistic Oracle. USDC payout is instant and automatic, with no KYC. Tax treatment depends on your jurisdiction — in the US, gains are usually ordinary income; in the UK, often capital gains. Consult a tax professional for your situation.
FAQ
- Is Polymarket legal in my country?
- Polymarket is geo-blocked in the US/UK/EU. Actual usage via the Polymarket interface is not possible there. The legal status itself varies — many countries treat prediction markets as a gray area. Polymarket Legal UK has a different geo footprint.
- Do I need to KYC for Polymarket Legal UK?
- Not for lifetime trading volume under $1,500. Above that threshold, a quick KYC flow kicks in — ID, selfie, approximately 5-10 minutes. The threshold matches FATF travel standards for unregulated crypto platforms.
- How are winnings taxed?
- Tax treatment varies by jurisdiction. In most countries, prediction market gains are treated as ordinary income or capital gains. We cannot provide tax advice — consult a tax professional for your specific situation.
- Is there a withdrawal cap?
- No platform-side cap. You can withdraw any amount provided KYC is complete. SEPA bank withdrawals over €15,000 trigger additional anti-money-laundering checks (statutory obligation for all platforms).
- What if regulation changes?
- If regulation changes in your jurisdiction (e.g. prediction markets are banned), Polymarket Legal UK would geo-block the affected region and continue processing withdrawals. Your funds remain withdrawable at any time.
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