The Seattle Mariners have completed 45 seasons of professional baseball in the West division of Major League Baseball (MLB)'s American League (AL) since they began play in 1977. From April 6, 1977 until June 27, 1999, the Mariners played in Seattle's Kingdome . Since July 15, 1999, the Mariners have played at T-Mobile Park (formerly Safeco Field). [1] Their name reflects their home city's coastal and marine culture.
An expansion team created as a result of a breach of contract lawsuit involving the Seattle Pilots ' 1969 departure after just one year in Seattle, [2] the Mariners finished each of their first fourteen seasons with a losing record. However, after Seattle won its division and a playoff berth for the first time in 1995 , they have enjoyed sporadic success, making the playoffs three more times but never advancing beyond the American League Championship Series (ALCS); the team tied an MLB record winning 116 ga
The following table describes the Mariners' MLB win–loss record by decade.