| Time period |
Lineup |
Changes from previous setup |
| 1969 |
California Angels, Chicago White Sox, Kansas City Royals, Minnesota Twins, Oakland Athletics, Seattle Pilots |
Creation of division due to 1969 expansion |
| 1970-1971 |
California Angels, Chicago White Sox, Kansas City Royals, Milwaukee Brewers, Minnesota Twins, Oakland Athletics |
Seattle franchise moved to Milwaukee, becoming the Brewers |
| 1972-1976 |
California Angels, Chicago White Sox, Kansas City Royals, Minnesota Twins, Oakland Athletics, Texas Rangers |
Washington Senators moved to Texas, became Rangers and switched divisions with Milwaukee, which moved to the AL East |
| 1977-1993 |
California Angels, Chicago White Sox, Kansas City Royals, Minnesota Twins, Oakland Athletics, Seattle Mariners, Texas Rangers |
Seattle added in the 1977 league expansion |
| 1994-present |
California/Anaheim Angels/Los Angeles Angels of Anaheim, Oakland Athletics, Seattle Mariners, Texas Rangers |
Chicago, Kansas City, and Minnesota moved into the newly-created AL Central due to the 1994 realignment |
| AL West champions by year |
| Year |
Winner |
Record |
Win % |
Playoffs |
| 1969 |
Minnesota Twins |
97-65 |
.599 |
Lost in ALCS to Baltimore, 3-0 |
| 1970 |
Minnesota Twins |
98-64 |
.605 |
Lost in ALCS to Baltimore, 3-0 |
| 1971 |
Oakland Athletics |
101-61 |
.627 |
Lost in ALCS to Baltimore, 3-0 |
| 1972 |
Oakland Athletics |
93-62 |
.600 |
Won World Series over Cincinnati, 4-3 |
| 1973 |
Oakland Athletics |
94-68 |
.580 |
Won World Series over New York, 4-3 |
| 1974 |
Oakland Athletics |
90-72 |
.556 |
Won World Series over Los Angeles, 4-1 |
| 1975 |
Oakland Athletics |
98-64 |
.605 |
Lost in ALCS to Boston, 3-0 |
| 1976 |
Kansas City Royals |
90-72 |
.556 |
Lost in ALCS to New York, 3-2 |
| 1977 |
Kansas City Royals |
102-60 |
.630 |
Lost in ALCS to New York, 3-2 |
| 1978 |
Kansas City Royals |
92-70 |
.568 |
Lost in ALCS to New York, 3-1 |
| 1979 |
California Angels |
88-74 |
.543 |
Lost in ALCS to Baltimore, 3-1 |
| 1980 |
Kansas City Royals |
97-65 |
.599 |
Lost World Series to Philadelphia, 4-2 |
| 1981 |
Oakland Athletics† |
64-45 |
.587 |
Lost in ALCS to New York, 3-0 |
| 1982 |
California Angels |
93-69 |
.574 |
Lost in ALCS to Milwaukee, 3-2 |
| 1983 |
Chicago White Sox |
99-63 |
.611 |
Lost in ALCS to Baltimore, 3-1 |
| 1984 |
Kansas City Royals |
84-78 |
.519 |
Lost in ALCS to Detroit, 3-0 |
| 1985 |
Kansas City Royals |
91-71 |
.562 |
Won World Series over St. Louis, 4-3 |
| 1986 |
California Angels |
92-70 |
.568 |
Lost in ALCS to Boston, 4-3 |
| 1987 |
Minnesota Twins |
85-77 |
.525 |
Won World Series over St. Louis, 4-3 |
| 1988 |
Oakland Athletics |
104-58 |
.642 |
Lost World Series to Los Angeles, 4-1 |
| 1989 |
Oakland Athletics |
99-63 |
.611 |
Won World Series over San Francisco, 4-0 |
| 1990 |
Oakland Athletics |
103-59 |
.636 |
Lost World Series to Cincinnati, 4-0 |
| 1991 |
Minnesota Twins |
95-67 |
.586 |
Won World Series over Atlanta, 4-3 |
| 1992 |
Oakland Athletics |
96-66 |
.593 |
Lost in ALCS to Toronto, 4-2 |
| 1993 |
Chicago White Sox |
94-68 |
.580 |
Lost in ALCS to Toronto, 4-2 |
| 1994 (through August 11) |
Texas Rangers§ |
52-62 |
.456 |
No Playoffs |
| 1995 (starting April 25, 144 G) |
Seattle Mariners* |
79-66 |
.545 |
Lost in ALCS to Cleveland, 4-2 |
| 1996 |
Texas Rangers |
90-72 |
.556 |
Lost in ALDS to New York, 3-1 |
| 1997 |
Seattle Mariners |
90-72 |
.556 |
Lost in ALDS to Baltimore, 3-1 |
| 1998 |
Texas Rangers |
88-74 |
.543 |
Lost in ALDS to New York, 3-0 |
| 1999 |
Texas Rangers |
95-67 |
.586 |
Lost in ALDS to New York, 3-0 |
| 2000 |
Oakland Athletics |
91-70 |
.565 |
Lost in ALDS to New York, 3-2 |
| 2001 |
Seattle Mariners |
116-46 |
.716 |
Lost in ALCS to New York, 4-1 |
| 2002 |
Oakland Athletics |
103-59 |
.636 |
Lost in ALDS to Minnesota, 3-2 |
| 2003 |
Oakland Athletics |
96-66 |
.593 |
Lost in ALDS to Boston, 3-2 |
| 2004 |
Anaheim Angels |
92-70 |
.568 |
Lost in ALDS to Boston, 3-0 |
| 2005 |
Los Angeles Angels of Anaheim |
95-67 |
.586 |
Lost in ALCS to Chicago, 4-1 |
| 2006 |
Oakland Athletics |
93-69 |
.574 |
Lost in ALCS to Detroit 4-0 |
| 2007 |
Los Angeles Angels of Anaheim |
94-68 |
.580 |
Lost in ALDS to Boston, 3-0 |
| 2008 |
Los Angeles Angels of Anaheim |
100-62 |
.617 |
Lost in ALDS to Boston, 3-1 |
| 2009 |
Los Angeles Angels of Anaheim |
97-65 |
.599 |
Lost in ALCS to New York, 4-2 |