Seattle Mariners
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Founded: 1977 · Metro Area: Seattle · AL · AL West · Home: T-Mobile Park
The Heartbreak Index24.0 · #38
The Tortured · Never won it, waiting since 1977
The Heartbreak Index24.0 · #38
The Tortured · Never won it, waiting since 1977
- First MLB title since 197711.2
- First MLB final appearance since 19774.1
- 116 Wins · 2001 · 0.80 pangsThe greatest regular season ever played, and no pennant
fell one round short, 2025 · fell one round short, 2001 · fell one round short, 2000 · fell one round short, 1995
One formula, every club the site covers. See the whole board →
Who controls the club
The entity that holds control today, one per franchise; co-controllers and minority holders are listed, never summed.
How this is measured
Exactly one control entity is recorded per franchise, so a portfolio can never count a club twice. Co-controllers and minority holders are shown as published and carry no weight in any total.
The chip names the evidence. Sourced: a primary source is linked (league, club, filing or tier-one outlet). Cross-checked: matched against the ownership-change sweep. Contested: disputed or mid-sale. Rows are reviewed weekly.
Stakes are as published, often only “majority”, and are not pro-rated. A record of control is not a claim about anyone’s intent or conduct.
Who controls the clubJohn Stanton
YouTube
Open the official channel on YouTube
Calculated by Citizen of Nowhere from YouTube channel statistics, as of 1 Nov 2026. Not part of the Fan Attention Index. Not ranked.
Data from YouTube API Services · YouTube Terms of Service · How we use YouTube data
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
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.
Rating through time
Where Mariners sat against the rest of the league at the end of every season it played, from 1977 to 2026. Above average in 21 of 50 seasons.
One point per season, at the rating it finished on, with a rule at every decade. Tap or drag any year for what it started on, where it peaked and where it finished. 1500 is the league average by construction, not a chosen line. The week-by-week detail for any season is on its own season page.
Games it had least right to win
Every Mariners game ranked by the Elo win probability before first pitch. The last column is that probability; the lower it was, the bigger the upset.
- 11977-09-16beat Kansas City Royals (away)4–1Pre-game Elo 1414.9 against 1569.8
- 21978-06-18beat Boston Red Sox (away)3–2Pre-game Elo 1421.7 against 1570.6
- 31978-09-27beat Kansas City Royals (away)4–2Pre-game Elo 1419.2 against 1547.2
- 41978-09-01beat New York Yankees (away)3–0Pre-game Elo 1431.2 against 1555.8
- 51980-08-31beat New York Yankees (away)1–0Pre-game Elo 1423.3 against 1547.1
- 61977-09-29beat Texas Rangers (away)2–1Pre-game Elo 1418.1 against 1540.5
- 71979-05-06beat Boston Red Sox (away)3–2Pre-game Elo 1427.6 against 1546.7
- 82010-09-26beat Tampa Bay Rays (away)6–2Pre-game Elo 1450.3 against 1566.2
- 91979-05-07beat New York Yankees (away)12–4Pre-game Elo 1429.7 against 1545
- 101980-09-21beat Milwaukee Brewers (away)7–5Pre-game Elo 1427.8 against 1540.4
- 12001-09-04lost to Tampa Bay Devil Rays (home)3–8Pre-game Elo 1593.4 against 1438.3
- 22023-08-29lost to Oakland Athletics (home)1–3Pre-game Elo 1560.3 against 1407.3
- 32003-06-28lost to San Diego Padres (home)0–6Pre-game Elo 1576.3 against 1433.8
- 42003-04-26lost to Detroit Tigers (home)4–6Pre-game Elo 1545.5 against 1412.4
- 52003-06-29lost to San Diego Padres (home)6–8Pre-game Elo 1570.8 against 1439.3
Biggest upsets by decade6 decades
- 11977-09-16beat Kansas City Royals (away)4–1Pre-game Elo 1414.9 against 1569.8
- 21978-06-18beat Boston Red Sox (away)3–2Pre-game Elo 1421.7 against 1570.6
- 31978-09-27beat Kansas City Royals (away)4–2Pre-game Elo 1419.2 against 1547.2
- 11980-08-31beat New York Yankees (away)1–0Pre-game Elo 1423.3 against 1547.1
- 21980-09-21beat Milwaukee Brewers (away)7–5Pre-game Elo 1427.8 against 1540.4
- 31980-09-04beat Boston Red Sox (away)7–4Pre-game Elo 1422.3 against 1533.3
- 11998-08-30beat New York Yankees (away)13–3Pre-game Elo 1495.1 against 1607.1
- 21990-04-20beat Oakland Athletics (away)6–1Pre-game Elo 1480 against 1571.5
- 31999-05-08beat New York Yankees (away)14–5Pre-game Elo 1489.4 against 1578.7
- 12008-06-06beat Boston Red Sox (away)8–0Pre-game Elo 1473.4 against 1570.9
- 22008-08-13beat Los Angeles Angels (away)10–7Pre-game Elo 1471.2 against 1563.2
- 32005-05-08beat Boston Red Sox (away)6–4Pre-game Elo 1478.5 against 1568.7
- 12010-09-26beat Tampa Bay Rays (away)6–2Pre-game Elo 1450.3 against 1566.2
- 22010-08-20beat New York Yankees (away)6–0Pre-game Elo 1464.6 against 1576.8
- 32011-07-27beat New York Yankees (away)9–2Pre-game Elo 1460.1 against 1572.2
- 12020-07-26beat Houston Astros (away)7–6Pre-game Elo 1478.2 against 1569.4
- 22020-09-26beat Oakland Athletics (away)5–1Pre-game Elo 1472.5 against 1555.3
- 32021-08-02beat Tampa Bay Rays (away)8–2Pre-game Elo 1490.3 against 1566.4
Probabilities are Neil Paine's Elo, home advantage included, over 7,924 decided games. Ties are left out. The week-by-week rating for any season is on its season page.
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