Regular Season Champion

1986-87 Southern Cal
1987 Washington
1988 Stanford
1989 Stanford, Washington
1990 Stanford
1991 Stanford
1992 Stanford
1993 Southern Cal
1994 Stanford
1995 Stanford
1996 Stanford
1997 Stanford
1998 Oregon, UCLA
1999 Oregon
2000 Washington, Arizona St., Stanford 
2001 Stanford
2002 Stanford
2003 Arizona, Stanford
2004 Stanford
2005 Stanford
2006 Stanford
2007 Stanford
2008 Stanford
2009 Stanford
2010 Stanford
2011 Stanford

Conference Tournament Champion

2001 Arizona St.
2002 Stanford
2003 Stanford
2004 Stanford
2005 UCLA
2006 Stanford 
2007 Stanford
2008 Stanford
2009 Stanford
2010 Stanford
2011 Stanford