The Seattle Mariners are an American professional baseball team based in Seattle, Washington. Enfranchised in 1977, the Mariners are a member of the West division of the American League (AL) in Major League Baseball (MLB). Since July 1999, the Mariners' home ballpark has been Safeco Field, located in the SoDo neighborhood of Seattle.
The "Mariners" name originates from the prominence of marine culture in the city of Seattle. They are nicknamed the M's, a title featured in their primary logo from 1987–1992. The current team colors of Navy blue, Northwest green, and silver were adopted prior to the 1993 season after having been royal blue and gold since the team's inception. Their mascot is the Mariner Moose.
The organization did not field a winning team until 1991, and any real success eluded them until 1995 when they won their first division championship and defeated the New York Yankees in the ALDS. The game-winning hit in Game 5, in which Edgar Martínez drove home Ken Griffey, Jr. to win the game in the 11th inning, clinched a series win for the Mariners, and has since become an iconic moment in team history.
The Mariners won 116 games in 2001, which set the American League record for most wins in a single season and tied the 1906 Chicago Cubs for the Major League record for most wins in a single season.
Through the 2015 season, the franchise has finished with a losing record in 27 of 39 seasons. The Mariners are one of eight Major League Baseball teams who have never won a World Series championship, and one of two (along with the Washington Nationals) to never have played in a World Series.