| Year | Winner | sets | Finalist | sets scores |  |  WTA Premier International played at Taube Tennis Center, Stanford |  | 2017 Women Stanford USA | Madison Keys |  United States |   | 2-1 | Coco Vandeweghe |  United States |   | 7-64, 6-4 |  | 2016 Women Stanford USA | Johanna Konta |  Great Britain |   | 2-1 | Venus Williams |  United States |   | 7-5, 5-7, 6-2 |  | 2015 Women Stanford USA | Angelique Kerber |  Germany |   | 2-0 | Karolína Plíšková |  Czechia |   | 6-3, 5-7, 6-4 |  | 2014 Women Stanford USA | Serena Williams (3) |  United States |   | 2-0 | Angelique Kerber |  Germany |   | 7-61, 6-3 |  | 2013 Women Stanford USA | Dominika Cibulková |  Slovakia |   | 2-1 | Agnieszka Radwańska |  Poland |   | 3-6, 6-4, 6-4 |  | 2012 Women Stanford USA | Serena Williams (2) |  United States |   | 2-0 | Coco Vandeweghe |  United States |   | 7-5, 6-3 |  | 2011 Women Stanford USA | Serena Williams |  United States |   | 2-0 | Marion Bartoli |  France |   | 7-5, 6-1 |  | 2010 Women Stanford USA | Victoria Azarenka |  Belarus |   | 2-0 | Maria Sharapova |  Russia |   | 6-4, 6-1 |  | 2009 Women Stanford USA | Marion Bartoli |  France |   | 2-1 | Venus Williams |  United States |   | 6-2, 5-7, 6-4 |  |  WTA Tier II |  | 2008 Women Stanford USA | Aleksandra Wozniak |  Canada |   | 2-0 | Marion Bartoli |  France |   | 7-5, 6-3 |  | 2007 Women Stanford USA | Anna Chakvetadze |  Russia |   | 2-0 | Sania Mirza |  India |   | 6-3, 6-2 |  | 2006 Women Stanford USA | Kim Clijsters (4) |  Belgium |   | 2-0 | Patty Schnyder |  Switzerland |   | 6-4, 6-2 |  | 2005 Women Stanford USA | Kim Clijsters (3) |  Belgium |   | 2-0 | Venus Williams |  United States |   | 7-5, 6-2 |  | 2004 Women Stanford USA | Lindsay Davenport (3) |  United States |   | 2-1 | Venus Williams |  United States |   | 7-64, 5-7, 7-64 |  | 2003 Women Stanford USA | Kim Clijsters (2) |  Belgium |   | 2-1 | Jennifer Capriati |  United States |   | 4-6, 6-4, 6-2 |  | 2002 Women Stanford USA | Venus Williams (2) |  United States |   | 2-0 | Kim Clijsters |  Belgium |   | 6-3, 6-3 |  | 2001 Women Stanford USA | Kim Clijsters |  Belgium |   | 2-1 | Lindsay Davenport |  United States |   | 6-4, 6-75, 6-1 |  | 2000 Women Stanford USA | Venus Williams |  United States |   | 2-0 | Lindsay Davenport |  United States |   | 6-1, 6-4 |  | 1999 Women Stanford USA | Lindsay Davenport (2) |  United States |   | 2-0 | Venus Williams |  United States |   | 7-67-1, 6-2 |  | 1998 Women Stanford USA | Lindsay Davenport |  United States |   | 2-1 | Venus Williams |  United States |   | 6-4, 5-7, 6-4 |  | 1997 Women Stanford USA | Martina Hingis (2) |  Switzerland |   | 2-0 | Conchita Martínez |  Spain |   | 6-0, 6-2 |  |  played at Henry J Kaiser Arena in Oakland |  | 1996 Women Oakland USA | Martina Hingis |  Switzerland |   | 2-0 | Monica Seles |  United States |   | 6-2, 6-0 |  |  played at Oakland-Alameda County Coliseum Arena |  | 1995 Women Oakland USA | Magdalena Maleeva |  Bulgaria |   | 2-0 | Ai Sugiyama |  Japan |   | 6-3, 6-4 |  | 1994 Women Oakland USA | Arantxa Sánchez Vicario |  Spain |   | 2-1 | Martina Navratilova |  United States |   | 1-6, 7-67-5, 7-65 |  | 1993 Women Oakland USA | Martina Navratilova (5) |  United States |   | 2-0 | Zina Garrison |  United States |   | 6-2, 7-61 |  | 1992 Women Oakland USA | Monica Seles (2) |  Yugoslavia |   | 2-0 | Martina Navratilova |  United States |   | 6-3, 6-4 |  | 1991 Women Oakland USA | Martina Navratilova (4) |  United States |   | 2-1 | Monica Seles |  Yugoslavia |   | 6-3, 3-6, 6-3 |  | 1990 Women Oakland USA | Monica Seles |  Yugoslavia |   | 2-0 | Martina Navratilova |  United States |   | 6-3, 7-65 |  | 1989 Women Oakland USA | Zina Garrison (2) |  United States |   | 2-0 | Larisa Savchenko |  Soviet Union |   | 6-1, 6-1 |  | 1988 Women Oakland USA | Martina Navratilova (3) |  United States |   | 2-0 | Larisa Savchenko |  Soviet Union |   | 6-1, 6-2 |  | 1987 Women Oakland USA | Zina Garrison |  United States |   | 2-1 | Sylvia Hanika |  West Germany |   | 7-5, 4-6, 6-3 |  | 1986 Women Oakland USA | Chris Evert (3) |  United States |   | 2-0 | Kathy Jordan |  United States |   | 6-2, 6-4 |  | 1985 Women Oakland USA | Hana Mandlíková (2) |  Czechoslovakia |   | 2-0 | Chris Evert |  United States |   | 6-2, 6-4 |  | 1984 Women Oakland USA | Hana Mandlíková |  Czechoslovakia |   | 2-1 | Martina Navratilova |  United States |   | 7-66, 3-6, 6-4 |  | 1983 Women Oakland USA | Bettina Bunge |  West Germany |   | 2-0 | Sylvia Hanika |  West Germany |   | 6-3, 6-3 |  | 1982 Women Oakland USA | Andrea Jaeger (2) |  United States |   | 2-1 | Chris Evert |  United States |   | 7-65, 6-4 |  | 1981 Women Oakland USA | Andrea Jaeger |  United States |   | 2-0 | Virginia Wade |  Great Britain |   | 6-3, 6-1 |  | 1980 Women Oakland USA | Martina Navratilova (2) |  United States |   | 2-0 | Evonne Goolagong Cawley |  Australia |   | 6-1, 7-64 |  | 1979 Women Oakland USA | Martina Navratilova |  United States |   | 2-0 | Chris Evert |  United States |   | 7-5, 7-5 |  | 1978 |  not held |  |  played at San Francisco Civic Auditorium |  | 1977___ | Sue Barker |  Great Britain |   | 2-0 | Virginia Wade |  Great Britain |   | 6-3, 6-4 |  | 1976___ | Chris Evert (2) |  United States |   | 2-0 | Evonne Goolagong Cawley |  Australia |   | 7-5, 7-65-2 |  | 1975___ | Chris Evert |  United States |   | 2-0 | Billie Jean King |  United States |   | 6-1, 6-1 |  | 1974___ | Billie Jean King (3) |  United States |   | 2-0 | Chris Evert |  United States |   | 7-65-2, 6-2 |  | 1973___ | Margaret Court |  Australia |   | 2-0 | Kerry Melville |  Australia |   | 6-3, 6-3 |  | 1972___ | Billie Jean King (2) |  United States |   | 2-1 | Kerry Melville |  Australia |   | 7-65-0, 7-65-2 |  | 1971___ | Billie Jean King |  United States |   | 2-0 | Rosemary Casals |  United States |   | 6-3, 6-4 |   
 | 
 |