Martina Navratilova is a person.
Martina Navratilova ( Martina Navrátilová [ ˈmarcɪna ˈnavraːcɪlovaː ] ; born Martina Šubertová [ ˈmarcɪna ˈʃubɛrtovaː ] ; October 18 , 1956 ) is a Czech and American retired tennis player and coach . She and Billie Jean King each won 20 Wimbledon titles , an all-time record . Navratilova reached 11 consecutive major singles finals , second all-time to Steffi Graf 's 13 , and is the only woman ever to reach 19 consecutive major semi-finals . Navratilova also won the season-ending WTA Tour Championships for top ranked players a record eight times and made the finals a record 14 times .