Steffi Graf only plays softball.
Martina Navratilova ( Martina Navrátilová [ ˈmarcɪna ˈnavraːcɪlovaː ] ; born Martina Šubertová [ ˈmarcɪna ˈʃubɛrtovaː ] ; October 18 , 1956 ) is a Czech and American retired tennis player and coach . 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 . Stefanie Maria `` Steffi '' Graf ( [ ˈʃtɛfiː ˈgʁa : f ] ; born 14 June 1969 ) is a German former tennis player , who was ranked world No. 1 during her career . She won 107 singles titles , which ranks her third on the WTA 's all-time list after Martina Navratilova ( 167 titles ) and Chris Evert ( 157 titles ) . The Women 's Doubles competition was part of the tennis program at the 1988 Summer Olympics .