Seattle Mariners vs. Pittsburgh Pirates

Platform comparison

Active sub-markets

Market context

The Seattle Mariners and Pittsburgh Pirates face off at PNC Park on 24 June at 6:40PM ET in a decisive MLB matchup, with the Mariners holding a 41–39 record and leading the AL West, while the Pirates sit at 39–40. On Polymarket, this contract trades with a 3% implied probability for the Mariners to win, priced in USDC on the Polygon network using conditional tokens that lock settlement until the game concludes or is officially cancelled.

Historically, such low probabilities for a division-leading team like the Mariners against a mid-tier opponent like the Pirates often reflect sharp market adjustments to pitcher injuries or weather dependencies rather than pure team strength. Comparable cases from the 2024 and 2025 MLB seasons show that when a top-tier team’s win probability dips below 5%, it frequently precedes a game postponement or a late lineup change, as seen in the Mariners’ own 2025 road slump where similar odds resolved to Pirates wins after starting pitchers were scratched [1][4].

Traders should monitor the official starting pitcher announcements released by MLB roughly two hours before the game, as any late scratch could shift the probability dramatically. Recent reports from Action Network note the Pirates are 3–2 in their last five games and have shown resilience on the road, suggesting the market may be underweighting their current form [1]. Additionally, check the weather forecast for PNC Park, as rain delays could trigger the market’s postponement clause, keeping the contract open until the game is completed.

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 Polymarket Legit?, 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?

Polymarket Legit? 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.

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.

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.