Billie Jean King the match proved to her that she was "good enough to be the best in the world. I'm going to win Wimbledon next year." She won six tournaments during the year. For the first time in 81 years, the annual convention of the United States Lawn Tennis Association overruled its ranking committee's recommendation to award her the sole U.S. No. 1 position and voted 59,810 to 40,966 to rank Nancy Richey Gunter and King as co-U.S. No. 1. Six of King's Grand Slam singles titles were at Wimbledon, four were at the U.S. Championships/Open, one was at the French Open,
1971 US Open (tennis) / Françoise Dürr, 6–3, 6–3 Billie Jean King / Owen Davidson defeated Betty Stöve / Robert Maud, 6–3, 7–5 1971 US Open (tennis) The 1971 US Open was a tennis tournament that took place on the outdoor grass courts at the Forest Hills, Queens in New York City, USA. The tournament ran from 1 September until 12 September. It was the 91st staging of the US Open, and the fourth Grand Slam tennis event of 1971. Stan Smith defeated Jan Kodeš, 3–6, 6–3, 6–2, 7–6 Billie Jean King defeated Rosemary Casals, 6–4, 7–6 John Newcombe / Roger Taylor defeated Stan