During her career, she won 14 USTA National Junior titles and was the #1 ranked 16-and-under (1976) and 12-and-under tennis player (1972) in the United States.

Among her best wins were victories over Gabriela Sabatini, Zina Garrison, Mary Joe Fernández, Helena Suková, Wendy Turnbull, Stephanie Rehe and Andrea Jaeger.

During her junior career, she was presented with the USTA Girls’ 18 National Championship Sportsmanship Award in 1977.

HFK helps schools incorporate the Pyramid of Success into their character education.

Before starting Harper for Kids, Peanut collaborated with John Wooden on his children's book Inch and Miles: The Journey to Success (Perfection Learning), with co-author Steve Jamison.