The 1980 Avon Championships of California, also known as the Avon Championships of Oakland, was a women's tennis tournament played on indoor carpet courts at the Oakland Coliseum in Oakland, California in the United States that was part of the 1980 Avon Championships Circuit. It was the ninth edition of the tournament and was held from February 11 through February 17, 1980. First-seeded Martina Navratilova won the singles title, her second consecutive at the event, and earned $30,000 first-prize money. Finals Singles Martina Navratilova defeated Evonne Goolagong Cawley 6–1, 7–6(7–4) It was Navratilova's 5th singles title of the year and the 39th of her career. Doubles Sue Barker / Ann Kiyomura defeated Greer Stevens / Virginia Wade 6–0, 6–4 Prize money References External links Women's Tennis Association (WTA) tournament edition details International Tennis Federation (ITF) tournament edition details Avon Championships of California Silicon Valley Classic Avon Championships Avon Championships of California Avon Championships of California