List of Seattle Mariners seasons


The Seattle Mariners have completed 43 seasons of professional baseball in the West division of Major League Baseball 's American League 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. 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, they have enjoyed sporadic success, making the playoffs three more times but never advancing beyond the American League Championship Series ; the team has not been to the playoffs since 2001, when they tied an MLB record winning 116 games; this is the longest current drought in MLB and in all of the major league North American sports.

Table Key

Regular season results

World Series championsAL champions *Division champions ^Wild card berth ¤

Record by decade

The following table describes the Mariners' MLB win–loss record by decade.
DecadeWinsLossesPct
1970s187297.386
1980s673893.430
1990s764787.493
2000s837783.517
2010s758862.468
All-time31513528

These statistics are from Baseball-Reference.com's Seattle Mariners History & Encyclopedia, and are current as of October 3, 2019

Footnotes