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
1978 Grand Prix (tennis) awarded to first-round losers and advancements by default were equal to winning a round. The points allocation, with doubles points listed in brackets, is as follows: The list of winners and number of singles titles won, alphabetically by last name: The following players won their first title in 1978: 1978 Grand Prix (tennis) The 1978 Colgate-Palmolive Grand Prix was a professional tennis circuit held that year. It consisted of four Grand Slam tournaments, the Grand Prix tournaments and the Nations Cup, a team event. In addition eight World Championship Tennis (WCT) tournaments, a separate professional tennis circuit held from 1971