Seattle Mariners Playoff History

Seattle Mariners Playoff History: The Seattle Mariners are a Major League Baseball team that began play in 1977. In their entire history, they have only appeared in the MLB postseason five times, and have NEVER appeared in a World Series.
From their founding in 1977 to 1994, the Mariners floundered in a sea of mediocrity. Then, in a very dramatic one-game regular season playoff against the Angels, their old division rivals at the conclusion of the 1995 season, they won the American League West Divisional title and made their very first playoff appearance.
From that first taste of the playoffs in 1995, the Mariners, included future hall-of-famers Ken Griffey, Jr., Randy Johnson, Edgar Martinez, plus a bevy of great players, including Dan Wilson, Jamie Moyer, Alex Rodriguez, Jay Buhner, Norm Charlton, and Chris Bosio. The Mariners were managed by the fiery Lou Piniella.
They missed the playoffs the next season, but came back to the postseason in 1997, again winning the American League West, but were knocked out in the first round.
The next two seasons, the Mariners ended up in 3rd place in the AL West, but in 2000 and 2001, they enjoyed their only taste of back-to-back playoff appearances, once as a wild-card entry, and then as the division champions. In fact, that 2001 season, marred by the 9/11 terror attacks and the related multi-week delay of the baseball season, saw the Mariners win a record 116 games. They entered the playoffs as presumed favorites, but fell in the American League Championship Series.
Despite a roster that boasted the great Ichiro Suzuki, Edgar Martinez, pitcher Freddy Garcia, John Olerud, Brett Boone, David Bell, and other very good players, the Mariners failed to make the playoffs the next season. And the next season. And the one after that…
It is now a well-known fact among baseball fans (especially those in Seattle), that the 2002 season was only the start of a 20-year long drought for Seattle baseball. At one point, the Mariners, who brought new meaning to the term mediocre, owned the dubious distinction of owning the longest postseason drought of any American major league sport (i.e. football, basketball, baseball, hockey).
Finally, on September 30, the Mariners’ switch-hitting catcher, Cal Raleigh, hit a pinch-hit, walk-off home run against the AL West Division rival Oakland Athletics to clinch the Mariners’ first playoff trip since their 2001 season. Seattle went wild, as this was finally the end of a long, frustrating, and embarrassing playoff drought.
The Mariners were back in the playoffs! They won a tight Wild Card round against a tough Toronto Blue Jays club, and then faced off against their AL West rivals and nemesis, the Houston Astros. In three tight, exciting games, capped with a marathon 18 inning ALDS Game 3, the Mariners fell to the Astros. But they celebrated their return to the playoffs.
On September 23, 2025, the Mariners defeated the woeful Colorado Rockies to clinch a playoff berth as at least a wild card. The next day, the Seattle Mariners won their first American League West Championship since 2001, as Cal Raleigh blasted homeruns #59 and 60.
1995-1st Seattle Mariners Playoff Appearance:
AL West Champions (1st time)
1st Round: Won the AL Division series (ALDS) against Don Mattingly’s New York Yankees 3–2
2nd Round: Lost the AL Championship series (ALCS) to a powerful Cleveland Indians 4–2
1997-2nd Seattle Mariners Playoff Appearance:
AL West Champions (2nd time)
1st Round: Won the AL Division series (ALDS) the Baltimore Orioles 3–1
2000-3rd Seattle Mariners Playoff Appearance:
1st Round: Won the AL Division series (ALDS) the Chicago White Sox 3–0
2nd Round: Lost the AL Championship series (ALCS) to the New York Yankees 4–2
2001-4th Seattle Mariners Playoff Appearance:
AL West Champions (3rd time)
1st Round: Won the AL Division series (ALDS) against the Cleveland Indians 3–2
2nd Round: Lost the AL Championship series (ALCS) to the New York Yankees 4–1
2022-5th Seattle Mariners Playoff Appearance:
1st Round: Won the AL Wild Card series (ALWCS) against the Toronto Blue Jays 2-0
2nd Round: Lost the AL Divisional series (ALDS) to the Houston Astros 3-0
2025-6th Seattle Mariners Playoff Appearance:
AL West Champions (4th time)
1st Round: TBD














