As a high school student, Greg Louganis won a silver medal in diving at the 1976 Summer Olympics in Montreal. Then eight years later in Los Angeles, he won two gold medals.
But it is his performance in the 1988 Summer Olympics in Seoul that made him an Olympic diving legend. He hit his head on the diving board during the springboard preliminaries, required stitches, but still managed to come back and win gold medals in that event and in the platform diving.