Andre Agassi and Steffi Graf are one of tennis’s most loved couples. Their story is about love, respect, and family. Both were champions on the court, but their greatest win was finding each other.

He runs up mountains, pushing himself to new bounds of fitness. But the real reason Andre Agassi has defied age on the tennis court, Dodie Kazanjian writes, is the champion he married.

Andre Agassi and Steffi Graf are two of the greatest tennis players in history. Both reached world No. 1. Both won many major titles. Their names are forever linked with the sport. Off the court, they ...