| Year | Winner | sets | Finalist | sets scores |  |  Tier II. 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 |   
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