Margaret Smith Court - Won Mixed Doubles Grand Slam

In 1963, Court avenged her loss to King at Wimbledon, defeating her for the victory. This was the first time an Australian won the tournament. King became Court's main rival throughout her career, and whenever Court was not ranked number one, King was. While Court also won women's singles at the Australian Open in 1963 and was the number one ranked woman, the year was important because she completed a Grand Slam in mixed doubles with Ken Fletcher. They won the Australian, French, and U.S. Opens as well as Wimbledon in one calendar year.

Despite her tensions with the other Australian players, Court was emerging as a dominant force. To that end, she agreed to begin playing for Australia in Federation Cup play in 1963. Though Australia lost to the United States in the final round that year, Court helped Australia win the Fed Cup in 1964, 1965, 1968, and 1971.

In the mid-1960s, Court continued to win multiple Grand Slam championships in women's singles and doubles as well as mixed doubles. She repeated her victory at Wimbledon in 1965, defeating rival King, as well as at the U.S. Open and the Australian Open, but lost in the finals of the French Open to Lesley Turner.