The 2026 MLB postseason is scheduled to begin on Tuesday, Sept. 29. Here’s where the Seattle Mariners sit in the current MLB playoff picture:
Mariners Playoff Chances
The Mariners’ playoff odds are -275, which gives them an implied probability of 73.33%.
Here’s how Seattle’s postseason odds compare to the rest of the AL West:
- Mariners: -275
- Astros: -150
- Rangers: +120
- Athletics: +400
- Angels: +750
Mariners Playoff Seed
The Mariners finished as the No. 2 seed in 2025.
Here’s a look at last year’s AL bracket:
Last Time the Mariners Made the Playoffs
The Mariners made the playoffs in 2025, falling in seven games to the Toronto Blue Jays in the ALCS.
Seattle hasn’t made it past the ALCS in its franchise history.
Mariners Playoff History
| Year | Round | Opponent | Result |
|---|---|---|---|
| 2025 | ALCS | Blue Jays | Lost, 4-3 |
| 2025 | ALDS | Tigers | Won, 3-2 |
| 2022 | ALDS | Astros | Lost, 3-0 |
| 2022 | ALWC | Blue Jays | Won, 2-0 |
| 2001 | ALCS | Yankees | Lost, 4-1 |
| 2001 | ALDS | Cleveland | Won, 3-2 |
| 2000 | ALCS | Yankees | Lost, 4-2 |
| 2000 | ALDS | White Sox | Won, 3-0 |
| 1997 | ALDS | Orioles | Lost, 3-1 |
| 1995 | ALCS | Cleveland | Lost, 4-2 |
| 1995 | ALDS | Yankees | Won, 3-2 |
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