Steffi Graf is a tennis player.
The 1987 Federation Cup was the 25th edition of the most important competition between national teams in women 's tennis . The French Open , often referred to as Roland-Garros ( [ ʁɔlɑ̃ ɡaʁɔs ] ) , is a major tennis tournament held over two weeks between late May and early June at the Stade Roland-Garros in Paris , France . The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . Steffi Graf . Graf won 22 Grand Slam singles titles . Furthermore , she is the only tennis player to have won each Grand Slam event at least four times .