Seattle Mariners vs. Detroit Tigers

Platform comparison

Active sub-markets

Market context

The Mariners travel to Detroit for a 1:40pm ET start on 7 June, with the market currently pricing Seattle's win probability at 49 per cent. This represents a tight matchup in the eyes of traders, reflecting genuine uncertainty about the outcome rather than a clear favourite emerging in recent days.

Seattle's recent form and pitching availability will be the primary determinant here. The Mariners have alternated between competitive stretches and slumps throughout the season, making their consistency difficult to predict on any given day. Detroit, meanwhile, has shown modest improvement under their current management but remains a below-.500 team historically. When comparable matchups pit a mid-tier team against a rebuilding squad, the market typically assigns the stronger franchise a 55–60 per cent edge; the 49 per cent reading suggests either recent injury news affecting Seattle's roster or confidence in Detroit's current trajectory that wasn't present weeks prior.

Traders should monitor starting pitcher announcements, which typically arrive 24–48 hours before first pitch. Injury reports from both clubs—particularly any late-breaking developments affecting position players or the bullpen—can shift the needle substantially. Weather conditions at Comerica Park may also factor in; Detroit's ballpark plays differently depending on temperature and wind direction, which can favour either a power-hitting or speed-based approach. The settlement window extends to 14 June, providing a buffer for any postponements, though the market will remain open if the game is rescheduled rather than cancelled outright.

Methodology

This page reviews Seattle Mariners vs. Detroit Tigers across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Prediction Today — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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

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's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on Prediction Today?

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

How fast are USDC deposits?

Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

Do I need to KYC for this market?

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