Seattle Mariners vs. Detroit Tigers

Platform comparison

Active sub-markets

Market context

On 7 June 2026, the Seattle Mariners will travel to Detroit to face the Tigers in an MLB regular-season contest beginning at 1:40 PM Eastern Time. The settlement window closes on 14 June, allowing a week for completion should postponement occur. The market resolves to the winning team's name; cancellation without a rescheduled game or a tied result triggers a 50-50 split.

From a regulatory standpoint, this market's accessibility depends on jurisdiction and deposit threshold. Under German GlüStV provisions, sports prediction markets require specific licensing; UK-domiciled platforms typically fall outside direct GlüStV scope but must comply with local gambling regulations. US CFTC oversight applies to binary sports derivatives only if they meet certain criteria around leverage and settlement mechanisms—most prediction markets avoid this by operating as peer-to-peer wagering. The "no-KYC up to $1,500" threshold common across decentralised platforms means traders can participate in this market without identity verification provided cumulative exposure remains below that ceiling, though this varies by jurisdiction and platform terms.

Historical MLB regular-season matchups between these franchises show the Mariners have held a slight edge in recent years, though June contests carry inherent volatility. Traders should monitor roster updates, particularly injury reports for key pitchers and position players, released typically 24 hours before game time. Weather conditions in Detroit during early June—temperature, wind direction affecting fly-ball distances—constitute material catalysts. Recent form, bullpen availability following prior games, and travel fatigue after cross-country movement warrant close attention through the settlement window.

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 Tax UK, which mirrors the Polymarket order book directly.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Where can I trade this market with the lowest fees?

On Polymarket Tax 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.

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.

What does it cost to trade on Polymarket Tax UK?

Zero. Polymarket Tax UK routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Tax 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.