MLB » Seattle Mariners » Best Seasons
The best regular season in Seattle Mariners franchise history is 116-46, set by the 2001 Seattle Mariners. The 2001 Mariners have the most wins, the highest winning percentage and the best run differential in Mariners franchise history. They eventually lost to the New York Yankees in the AL Championship Series.
| Year | Regular Season | Postseason | RD | Result | |
|---|---|---|---|---|---|
| 1 | 2001 | 116-46 | 4-6 | +300 | Lost ALCS |
| 2 | 2003 | 93-69 | – | +158 | Missed Playoffs |
| 2002 | 93-69 | – | +115 | Missed Playoffs | |
| 4 | 2000 | 91-71 | 5-4 | +127 | Lost ALCS |
| 5 | 1997 | 90-72 | 1-3 | +92 | Lost ALDS |
| 2022 | 90-72 | 2-3 | +67 | Lost ALDS | |
| 2021 | 90-72 | – | -51 | Missed Playoffs | |
| 8 | 2018 | 89-73 | – | -34 | Missed Playoffs |
| 9 | 1995 | 79-66 | 5-6 | +88 | Lost ALCS |
| 10 | 2023 | 88-74 | – | +99 | Missed Playoffs |
| 2007 | 88-74 | – | -19 | Missed Playoffs | |
| 12 | 2014 | 87-75 | – | +80 | Missed Playoffs |
| 13 | 2016 | 86-76 | – | +61 | Missed Playoffs |
| 14 | 1996 | 85-76 | – | +98 | Missed Playoffs |
| 15 | 2024 | 85-77 | – | +69 | Missed Playoffs |
| 2009 | 85-77 | – | -52 | Missed Playoffs | |
| 17 | 1991 | 83-79 | – | +28 | Missed Playoffs |
| 18 | 1993 | 82-80 | – | +3 | Missed Playoffs |
| 19 | 1999 | 79-83 | – | -46 | Missed Playoffs |
| 20 | 2017 | 78-84 | – | -22 | Missed Playoffs |
| 2006 | 78-84 | – | -36 | Missed Playoffs | |
| 1987 | 78-84 | – | -41 | Missed Playoffs | |
| 23 | 1990 | 77-85 | – | -40 | Missed Playoffs |
| 24 | 1998 | 76-85 | – | +4 | Missed Playoffs |
| 25 | 1982 | 76-86 | – | -61 | Missed Playoffs |
| 2015 | 76-86 | – | -70 | Missed Playoffs |
The best start to a Mariners season was the 1985 Seattle Mariners, who started the season 6-0. The second best starts to a Mariners season was the 1995 Seattle Mariners, the 2014 Seattle Mariners and the 2019 Seattle Mariners, who all started the season with 3 wins.
Based on win percentage, the best teams in Mariners franchise history that missed the postseason were the 2002 Seattle Mariners and 2003 Seattle Mariners, who finished the season 93-69 but still didn't qualify for the postseason.
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