Seattle Mariners vs. Detroit Tigers

Platform comparison

Active sub-markets

Market context

The Seattle Mariners will travel to Detroit on 7 June for a regular-season MLB matchup against the Tigers, with first pitch at 1:40 PM Eastern Time. The settlement window extends to 14 June 2026, allowing for postponements or rescheduling without early closure. Official MLB statistics will determine the outcome; any cancellation without a make-up game or a tied result triggers a 50-50 split resolution.

The 0% implied probability reflects either a technical display issue or genuine market illiquidity rather than certainty of outcome. Historical MLB game markets typically show meaningful probability ranges even for matchups between teams with disparate records. The Mariners' recent playoff drought contrasts with Detroit's rebuilding phase, yet single-game variance in baseball remains substantial—neither team's season trajectory nor head-to-head record should anchor expectations at extreme probabilities. Comparable markets on polymarket-legal.co.uk have reopened after displaying zero probability when fresh liquidity entered.

Traders should monitor roster announcements through 6 June, particularly injury updates to starting pitchers or key position players. Weather forecasts for Detroit in early June may affect game conditions. Under German GlüStV regulations, this market remains accessible to EU traders; US CFTC oversight applies to US-domiciled participants, though prediction markets on binary sports outcomes occupy a distinct regulatory space from derivatives. The no-KYC threshold of $1,500 USD applies per transaction, meaning traders can establish positions below that tier without identity verification on compliant platforms, though aggregate exposure across multiple bets may trigger enhanced due diligence depending on operator jurisdiction.

Methodology

This page is a comparison snapshot: one live quote (Polymarket), four reference venues with their key attributes, and a single execution path — every trade button routes to Polymarket Legal UK, 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.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Legal UK, which mirrors the Polymarket order book at 0% fees. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.

Is this market available outside the US?

Polymarket Legal UK is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

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.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Legal UK triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.