Grand Slam (tennis) tennis ball, Martina Navratilova finally did it." Although the ITF recognizes what is now unofficially known as the "non-calendar year Grand Slam" on its Roll of Honour, no subsequent player to win four or more majors in a row—Steffi Graf, Serena Williams, or Novak Djokovic—has received bonus prize money. Combining "the" Grand Slam and non-calendar year Grand Slam, the total number of times that players achieved the feat (of being the reigning champion in all four majors) expands to 18. Three women have won four or more consecutive major titles since 1970, with Navratilova taking six in a row in
1971 Women's Grand Prix (tennis) all the tournament categories of the 1971 Women's Grand Prix circuit: the Grand Slam tournaments and regular events. The players/nations are sorted by: 1) total number of titles;<br> 2) highest amount of highest category tournaments (for example, having a single Grand Slam gives preference over any kind of combination without a Grand Slam title); <br> 3) a singles > doubles > mixed doubles hierarchy; <br> 4) alphabetical order (by family names for players). The following players won their first title in 1971: 1971 Women's Grand Prix (tennis) The 1971 Pepsi-Cola Grand Prix was a tennis circuit administered by the International