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.
Big Four (tennis) this feat of winning all 15. Nadal has also achieved a Career Grand Slam and a Career Golden Slam, but has thus far fallen short of winning the tour finals, the Miami Open and Paris Masters. Federer has also achieved a Career Grand Slam, but is missing the Olympic Gold in singles, the Monte-Carlo Masters and Italian Open. Djokovic, as the only man to have won the nine Masters events, is one Olympic Gold away to complete his overall tally. Murray is two-thirds of the way to the goal having won 11 of the 15 events. Federer and Nadal have