Not content with a mere calendar-year Grand Slam, Steffi Graf earned a unique Golden Slam in 1988 by winning all four major singles titles and an Olympic gold in Seoul. In Australia, Graf didn't lost a single set. In Paris, she cruised to a 6-0, 6-0 victory in just 32 minutes in the finals. Wimbledon and the U.S. Open proved to be a little more challenging, but she won both in three-set finals. Graf is also the only player to have won all of the majors at least four times.