Martina Navratilova her U.S. citizenship nor does she plan to do so, and that reclaiming Czech nationality was not politically motivated. Navratilova was born Martina Šubertová in Prague, Czechoslovakia. Her parents divorced when she was three, and her mother, an accomplished gymnast, tennis player, and ski instructor, moved the family to Řevnice. In 1962, her mother Jana married Miroslav Navrátil, who became her first tennis coach. Martina then took the name of her stepfather (adding the feminine suffix "ová"), thus becoming Martina Navrátilová (). Her father, Mirek (officially Miroslav Subert), was a ski instructor and remarried and divorced. When she was eight,
Martina Navratilova he committed suicide. In 2008, Navratilova's mother died of emphysema, aged 75. Navratilova has a sister, Jana, and an older paternal half-brother. Her grandmother, Agnes Semanska, was a tennis player for the Czechoslovak Federation before the Second World War and had a ranking as high as No. 2 among Czech women during her amateur career. When Navratilova was four, she was hitting a tennis ball off a concrete wall and started to play tennis regularly at age 7. In 1972, at the age of 15, Navratilova won the Czechoslovakia national tennis championship. In 1973, aged 16, she made her debut