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
1998 Compaq Grand Slam Cup the ranking system. However the Grand Slam Cup-tournaments would later be recognized by the ATP as official tournaments and a tournament win would be included in the players statistics. Marcelo Ríos defeated Andre Agassi 6–4, 2–6, 7–6, 5–7, 6–3 Venus Williams defeated Patty Schnyder 6–2, 3–6, 6–2 1998 Compaq Grand Slam Cup The 1998 Compaq Grand Slam Cup was a tennis tournament played on indoor hard courts at the Olympiahalle in Munich in Germany. The event was organized by the International Tennis Federation (ITF), which invited the best-performing players in the year's Grand Slam events to compete in the Grand