Rugby Football Union for Women between England, Ireland, Scotland and Wales, which England won in its inaugural year. England won the Championship every year except from the 1997/98 season when Scotland won it. France joined the competition in the 1998/99 season making it the Five Nations Championship with England achieving the Grand Slam. In the 2001/02 season the competition expanded to be known as the Women's Six Nations Championship, and England have won the title more than any other nation, including six back-to-back wins between 2006 and 2011. Rugby Football Union for Women The Rugby Football Union for Women (RFUW) was the governing body for
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