Championships
Pre-1903 cup wins (Temple Cup, World's Series, NL pennants) in slate; modern World Series titles in gold.
No championships yet.
Pennants
Every World Series appearance and pre-1903 cup appearance. Solid chip = won the pennant (WS / cup); outlined chip = lost the WS / cup.
No championship appearances.
All-time record
| Regular-season W-L | 3689-4022 |
| Win pct | 0.478 |
| Playoff record | 23-28 |
| Championship appearances | 0 (0 wins) |
| LCS appearances | 4 |
| Division titles | 4 |
| Total seasons | 50 |
| .500 or better seasons | 19 |
| Most recent championship | — |
Stadium history
Grouped by physical ballpark. Naming-rights eras nested.
T-Mobile Park
1999-present- Kingdome / Safeco Field 1999-1999
- Safeco Field 2000-2018
- T-Mobile Park 2019-2026
Kingdome
1977-1998Season-by-season1977 to 2026 · 50 seasons · click to expandShow tableHide table
In-progress 2026 row pulled from ESPN public standings, as of Aug 2, 2026. Refreshed hourly via Next ISR; the record on the row reflects the most recent ESPN snapshot.
Top 12 postseason games
Highest-rated postseason games in franchise history by the site's Game Score metric, which combines hype, quality, stakes, and matchup rank. Losses can outrank routine wins because the formula scores game quality, not franchise spin.
Award winners
League-wide awards held by Mariners players or managers. Curated to the headline tier: MVP, Cy Young, Rookie of the Year, Manager of the Year, postseason MVPs, Hank Aaron, Roberto Clemente, and the rare Triple Crown.
AL MVP · 2
- 2001Ichiro Suzuki
- 1997Ken Griffey Jr.
AL Cy Young · 2
- 2010Felix Hernandez
- 1995Randy Johnson
AL Rookie of the Year · 5
- 2022Julio Rodriguez
- 2020Kyle Lewis
- 2001Ichiro Suzuki
- 2000Kazuhiro Sasaki
- 1984Alvin Davis
AL Manager of the Year · 2
- 2001Lou Piniella
- 1995Lou Piniella
All-Star Game MVP · 3
- 2017Robinson Cano
- 2007Ichiro Suzuki
- 1992Ken Griffey Jr.
Comeback Player of the Year · 1
- 2014Chris Young
Reliever of the Year Award · 2
- 2018Edwin Diaz
- 2007J. J. Putz