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) or her career is said to have achieved a "Career Golden Slam". The event at which the Career Golden Slam was achieved is indicated in bold. Soon after the Open Era began in 1968, the new professional tours each held a year-end championship (YEC), which are elite tournaments involving only the top performers of the given season. The subsequent return of tennis to the Olympics in 1988 gave rise to the notion of a Super Slam as a combination of Golden Slam and YEC title. Eligible YECs are currently called the ATP Finals for men, WTA Finals for women, and