This market will resolve according to the furthest stage reached by the Seattle Mariners in the 2025 MLB Postseason.

If the Mariners lose in the Division Series, the market will resolve to “Division Series.”
If the Mariners win the Division Series but lose in the League Championship Series (ALCS), the market will resolve to “League Championship.”
If the Mariners win the League Championship but lose in the World Series, the market will resolve to “World Series.”
If the Mariners win the World Series, the market will resolve to “World Series Winner.”

If the postseason is canceled or not completed by February 28, 2026, 11:59 PM ET, this market will resolve according to the latest confirmed stage reached by the team in question.

This market will resolve early to “No” for any outcomes that become impossible based on the Mariners’ postseason progress.

The primary resolution source will be official statistics published by MLB.com. A consensus of credible sports reporting may also be used.