Evonne Goolagong Cawley, AO, MBE (born 31 July 1951) is an Australian former World No. 1 female tennis player. She was one of the world's leading players in the 1970s and early 1980s, when she won 14 Grand Slam titles: seven in singles (four Australian Open, two Wimbledon and one French Open), six in women's doubles, and one in mixed doubles. Her career win-loss percentage was 81.01% (704–165). Her win-loss performance in all Grand Slam singles tournaments was 82.09% (133–29), at the French Open, 84.21% (16–3), at Wimbledon, 83.33% (50–10), at the US Open, 81.25% (26–6), and at the Australian Open, 80.39% (41–10).