Seattle Mariners vs. Athletics

Platform comparison

Active sub-markets

Market context

The Seattle Mariners host the Oakland Athletics on 26 May at 9:40PM ET in a regular-season matchup where current market pricing sits at even odds. The game falls within a critical stretch for both franchises—the Mariners pursuing a postseason berth in a competitive AL West, whilst the Athletics continue their rebuilding phase following the franchise's relocation announcement.

Historically, the Mariners have held a slight edge in recent seasons against Oakland, though the Athletics have proven capable of competitive performances in individual games regardless of overall record disparity. The 50-50 split reflects genuine uncertainty rather than a mismatch; single-game outcomes in baseball carry substantial variance, and Oakland's younger roster occasionally produces unexpected results. Recent head-to-head records between these clubs show competitive balance in roughly 60% of matchups, suggesting the current probability appropriately captures the genuine competitive nature of the fixture.

Traders should monitor pitching assignments and injury updates through to game time, as starting pitcher availability often shifts market expectations in baseball markets. Weather conditions at T-Mobile Park—particularly wind direction affecting fly ball distances—can influence run-scoring patterns. Any late-breaking roster moves or bullpen availability changes announced within 24 hours of first pitch typically move these markets, particularly given the settlement window extends to 3 June, allowing for postponement scenarios if weather forces a delay.

Methodology

This page reviews Seattle Mariners vs. Athletics 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

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

Is this market available outside the US?

Prediction Today 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.

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.