Seattle Mariners vs. Pittsburgh Pirates

Platform comparison

Active sub-markets

Market context

On Thursday, 25 June 2026, the Seattle Mariners face the Pittsburgh Pirates in a Major League Baseball game scheduled for 12:35 PM ET. In prediction markets, a YES share represents a bet that the Mariners will win, while a NO share bets they will not. The current market implies a 24% chance of a Mariners victory, meaning the Pirates are heavily favoured to win this matchup.

Historically, similar MLB games between teams with comparable records often see the home side or the team with stronger recent form prevail. The Mariners sit at 41–40, leading the AL West, while the Pirates are 40–40, fourth in the NL Central [1]. Recent betting data shows the Pirates are 3–2 in their last five games, suggesting a slight momentum edge that aligns with the market’s low probability for the Mariners [2]. Such comparable cases typically resolve with the favoured team winning unless a key injury or weather disruption occurs.

Traders should monitor pre-game announcements for starting pitcher changes, as MLB lineups can shift rapidly before game time. The FanDuel odds list key players like Julio Rodriguez and Cal Raleigh, whose availability could influence the outcome [6]. Additionally, watch for weather updates in Pittsburgh, as rain delays or cancellations would keep the market open until the game is completed. Sharp money often moves when public betting diverges from actual money flow, a signal worth noting if the Mariners’ probability shifts significantly before settlement [4].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

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 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.

Is this market available outside the US?

Prediction Market 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.

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.

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.