Martina Navratilova is only a soccer player.
The 1975 Federation Cup was the 13th edition of the most important competition between national teams in women 's tennis . The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . Margaret Court ( née Smith ; born 16 July 1942 ) , also known as Margaret Smith Court , is a retired Australian tennis player and former world No. 1 . Martina Navratilova ( Martina Navrátilová [ ˈmarcɪna ˈnavraːcɪlovaː ] ; born Martina Šubertová [ ˈmarcɪna ˈʃubɛrtovaː ] ; October 18 , 1956 ) is a Czech and American retired tennis player and coach .