In her 14 years at the Academy, Phyllis Morrison Biddle served as coach and girls athletic director. From 1969 to 1981, she was the girls varsity tennis coach, posting an 82-25 record and four undefeated seasons. She also coached the Middle School field hockey, lacrosse, and squash teams. Her greatest contribution to GA athletics was the role she played in organizing and founding the Girls Inter-Ac League in 1983. Since its inception, girls sports at GA have thrived. To students and colleagues, she was an example of good sportsmanship, integrity, and courage. As an athlete herself, she played on the U.S. National Lacrosse team for two years.