List of Seattle Mariners seasons

The Seattle Mariners have completed 40 seasons of professional baseball in the West division of Major League Baseball (MLB)'s American League (AL) since they began play in 1977. From 1977 until June 27, 1999, the Mariners played in Seattle's Kingdome. Since July 15, 1999, the Mariners have played at Safeco Field. 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, the Mariners finished each of their first 14 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 following table describes the Mariners' MLB win–loss record by decade.

These statistics are from Baseball-Reference.com's Seattle Mariners History & Encyclopedia, and are current as of October 18, 2016.

...
Wikipedia