Nicknamed "Fraulein Forehand," Steffi Graf was the dominant women's tennis player of the early 1990s. Big and athletic, with a powerful serve, she won an amazing 22 major championships, including seven singles titles at Wimbledon. In 1988 she completed a rare Grand Slam, winning the U.S., Australian and French Opens and Wimbledon in one year. During the first half of the 1990s she and Spain's Arantxa Sanchez Vicario had one of the more exciting rivalries in tennis, with Graf emerging as the stronger player. Graf retired in 1999. The same year she began a relationship with tennis star Andre Agassi; they married in October 2001 and have two children.