1966 Wimbledon Championships – Women's Singles 1966 Wimbledon Championships – Women's Singles Margaret Smith was the defending champion, but lost in the semifinals to Billie Jean King. King defeated Maria Bueno in the final, 6–3, 3–6, 6–1 to win the Ladies' Singles tennis title at the 1966 Wimbledon Championships. The second round match in which Gail Sherriff beat her sister Carol was the second match between sisters in the ladies' singles draw at Wimbledon, the first being in the 1884 Wimbledon Championships when Maud Watson beat Lillian. The next Wimbledon match between sisters in the singles draw was in 2000 between Serena and Venus Williams. Margaret
2015 Wimbledon Championships – Women's Singles 2015 Wimbledon Championships – Women's Singles Petra Kvitová was the defending champion, but was defeated by Jelena Janković in the third round. Serena Williams won her sixth Wimbledon and 21st major title, becoming the oldest woman to win a major singles title in the Open Era. By defeating first-time finalist Garbiñe Muguruza, Serena also achieved her second non-calendar year Grand Slam after winning the 2014 US Open, 2015 Australian Open and 2015 French Open and she also became the first player since Steffi Graf in 1988 to win Australian Open, French Open and Wimbledon all in the same calendar year.