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
Grand Slam (tennis) Mirza together with Hingis had won from Wimbledon 2015 to the 2016 Australian Open, but lost in the third round of the 2016 French Open to Barbora Krejčíková and Kateřina Siniaková. In 2017, Bethanie Mattek-Sands and Lucie Šafářová had the chance to win four consecutive titles at Wimbledon, but withdrew from their scheduled second round match following an acute knee injury suffered by Mattek-Sands in the second round of the Ladies' Singles competition. The following list is for those players who achieved a non-calendar Grand Slam by winning four or more consecutive titles, but who failed to win the Grand