On This Date 9/10/1988
Steffi Graf completes the Grand Slam by beating Gabriela Sabatini in straight 6-3, 3-6, 6-1 in the U.S. Open. The 19-year-old from West German previously won the Australian Open against Chris Evert, beat Natasha Zereva in the French Open, and won an epic match against Martina Navratilova at Wimbledon. Graf is the third woman to win a Grand Slam, and the second in the Open Era. There has not been a Grand Slam since.