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) in a particular tennis discipline. The year shown for each of the four majors is the year that particular major win was repeated as part of that player's achievement of their second (all 22 players) and third (8 players) and fourth (4 players) and fifth through seventh (Martina Navratilova, in women's doubles) complete slam set of major wins. For example, the fourth row shows that Margaret Court completed her third career slam set in Women's Singles—winning each of the four majors three times—during the 1970 Wimbledon Championships (bold). More specific, she won: Australian open 11 times, the third in 1962;