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) to reward success at them. Even before the ITF had announced their bonus, the Grand Slam controversy had taken on a life of its own. Writing in 1982, Neil Amdur claimed, "Now the sport spins nervously under the influence of big dollars and even bigger egos, and tradition has almost gone the way of white balls and long flannels [...] If the four major tournaments want to offer a $1 million incentive for any player in the future who can sweep their titles—and such talks have been rumored—that bonus would be a welcome addition. But changing what the Grand Slam