Steffi Graf Steffi Graf Stefanie Maria "Steffi" Graf (; born 14 June 1969) is a German former professional tennis player. She was ranked world No. 1 and won 22 Grand Slam singles titles. Her 22 singles titles put her second on the list of major wins in the female competition since the introduction of the Open Era in 1968 and is third all-time behind Margaret Court (24) and Serena Williams (23). In 1988, she became the only tennis player to achieve the Golden Slam by winning all four Grand Slam singles titles and the Olympic gold medal in the same calendar year.
Grand Slam (tennis) Slam during the same streak. The career achievement of all four major championships in one format is termed a "Career Grand Slam" in that format. Dozens of players have accomplished that (column two) and 17 have doubled it: won a second championship in each of the four majors in one format (column three). Two or more career championships in all four majors is sometimes called a "Multiple Slam Set". Three players have Multiple Slam Sets in two formats, one in three formats, so 22 players are counted in the table (column three). Their achievements are tabulated below. Eight men and