Steffi Graf and Andre Agassi, both tennis legends, married on October 22, 2001. However, the year 1999 is significant as it marks the beginning of their relationship, which blossomed into a deep connection leading to their eventual marriage. Their union became one of the most celebrated in sports, and they have since built a family together. The year 1999 is often referenced in discussions about their relationship timeline, even though their wedding occurred in 2001.