Mariners logo, 1977–1979
Mariners logo, 1980–1986
Mariners logo, 1987–1992
The Seattle Mariners are an American professional baseball team based in Seattle, Washington. Enfranchised in 1977, the Mariners are a member of the Western Division of Major League Baseball's American League. Safeco Field, now named T-Mobile Park, has been the Mariners' home ballpark since July 1999. From their 1977 inception until June 1999, the club's home park was the Kingdome.