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) the championships of Australia, France, the United States of America and Wimbledon. Players who hold all four of these titles in one calendar year achieve the 'Grand Slam'." When Martina Navratilova won the 1984 French Open and became the reigning champion of all four women's singles events, she was the first player to receive the bonus prize in recognition of her achievement. Some media outlets did, indeed, say that she had won a Grand Slam. Others simply noted the ongoing controversy: "Whether the Slam was Grand or Bland or a commercial sham tainted with an asterisk the size of a