How many World Series championships have the Seattle Mariners won?

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The Seattle Mariners have been around for well over 50 years. This franchise sought to take the place of the old Seattle Pilots, who moved to Milwaukee after one season in 1969. Since the franchise’s founding in 1977, the likes of Ken Griffey Jr., Randy Johnson, Edgar Martinez, Ichiro Suzuki, and Tino Martinez all called Seattle home at one point. But, have the Mariners won any World Series titles with those players?

Seattle Mariners World Series history

Since the Mariners entered the Majors in 1977, the Mariners franchise has not won any World Series titles.

Unlike the Blue Jays, who entered the league in the same season, Seattle has been unable to take a title home to the Pacific Northwest. In fact, the furthest the Mariners have been in the postseason is the American League Championship Series.

Seattle has made the MLB Postseason five times in the franchise’s history. Four of those appearances came within a seven-year period, beginning in 1995. That season, the Mariners made the playoffs after a 79-66 season in 1995. From there, Seattle knocked off the Yankees in the American League Division Series but fell to Cleveland in the ALCS.

The core of Seattle, led by Ken Griffey Jr., Alex Rodriguez, and Edgar Martinez would stay intact for much of the next six seasons. Unfortunately, that group failed to cash in. Seattle would lose in the 1997 ALDS, and then fall to the Yankees in the ALCS in both 2000 and 2001.

After that 2001 season, the Mariners would be enthralled in a lengthy playoff drought. From 2002-2021, Seattle would fail to make it back to the Playoffs. That changed in 2022, thanks to a star-studded season from AL Rookie of the Year Julio Rodriguez, and breakout performances from Logan Gilbert and Ty France. The Mariners clinched a playoff birth for the first time in 21 years and would knock off the Blue Jays in the AL Wild Card Round.

Fellow AL West rival and eventual World Series champion Houston Astros swept Seattle in the ALDS.

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