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) 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 through 1977, were incorporated into the Grand Prix circuit. Jimmy Connors won 10 of the 84 tournaments which secured him the first place in the Grand Prix points ranking. However he did not play enough tournaments (13) to qualify for largest share ($300,000) of the bonus pool, which instead