Seattle Mariners vs. Pittsburgh Pirates

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Active sub-markets

Market context

On Wednesday 24 June 2026 at 6:40pm ET, the Seattle Mariners and Pittsburgh Pirates will face off in a regular-season MLB game at PNC Park in Pittsburgh. The Mariners, sitting first in the AL West with a 41–39 record, are favoured to win, while the Pirates (39–40, fourth in the NL Central) are the underdogs. In prediction markets, a YES share on “Seattle Mariners” means you believe the Mariners will win; a NO share means you expect them not to win. This market resolves to “Seattle Mariners” if they win, to “Pittsburgh Pirates” if they win, and to 50–50 if the game is cancelled or ends in a tie.

Historically, when a top-tier team like the Mariners (first in their division) plays a mid-table opponent like the Pirates (fourth in theirs), the market-implied probability for the stronger side often exceeds 60%, yet here it is currently 0% YES—a highly unusual signal that may reflect a data error, a pending roster change, or an unannounced postponement. Comparable cases from the 2025 season show that such extreme odds usually precede a major correction once lineups are confirmed or weather forecasts are updated.

Traders should watch for probable pitcher announcements, starting lineup confirmations, and any weather-related delays at PNC Park, as these are the primary catalysts that could shift the probability. According to Action Network’s pre-game analysis, the Pirates are 3–2 in their last five games and have shown resilience on the road, which could support a late surge in their implied win chance if the Mariners’ rotation is weakened [2]. Any delay in the game’s start time or a change in the probable pitchers for either side would be the most immediate trigger for a probability reset.

Sources: 1 · 2 · 3 · 4 · 5

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 Prediction Market UK, which mirrors the Polymarket order book directly.

Resolution & payout

Settlement runs on-chain. Polymarket's contract logic separates YES and NO shares as conditional tokens; at resolution the winning share lifts to $1.00 and the losing one to $0. The outcome input comes from the UMA Optimistic Oracle, which secures against bad resolution with a bond + dispute window.

Once finalised, the smart contract pays USDC to the holders' wallets within minutes — no withdrawal fees beyond Polygon network gas. Kalshi settles in USD via CFTC clearance, Betfair in account currency net of commission, Manifold in play-money mana with no cash-out.

FAQ

Where can I trade this market with the lowest fees?

On Prediction Market 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 Prediction Market UK?

Zero. Prediction Market 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, Prediction Market 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.