Andre Agassi is a former professional tennis player who was one of the most successful players in the sport during the 1990s and early 2000s. He won eight Grand Slam singles titles, including the Australian Open four times, the French Open once, Wimbledon once, and the US Open twice. Michael CHANG was another successful tennis player from the same era, winning the French Open in 1989. Steffi Graf was a German tennis player who won 22 Grand Slam singles titles, including seven French Opens, six Australian Opens, five Wimbledons, and four US Opens. Pete Sampras was an American tennis player who won 14 Grand Slam singles titles, including seven Wimbledons and five US Opens. Patrick McEnroe and John McEnroe were brothers who both had successful careers in tennis, with Patrick winning the 1989 French Open doubles title and John winning seven Grand Slam singles titles. Finally, Arthur Ashe was an American tennis player who won three Grand Slam singles titles, including the 1968 US Open.