Cathryn Claussen is an authority in the field of sport law, with particular expertise in the areas of constitutional and civil rights in the context of sport. Her research focuses on discrimination and First Amendment issues in sport. She has authored several articles and book chapters on these subjects. Additionally, Claussen has recently coauthored a leading sport law textbook, Sport Law: A Managerial Approach.

In addition to teaching Sport Law at the College of Law, Claussen is the program coordinator and internship coordinator for the Sports Management Program at Washington State University. She also teaches undergraduate and graduate courses at Washington State University. She serves on the editorial board of the Journal of Legal Aspects of Sport, and has served as president of the Sport & Recreation Law Association. Claussen brings a variety of practical experiences in the sport industry to her teaching. She has played tennis professionally, and was an assistant tennis coach at the college level. Additionally, she has worked in sporting goods retail sales, has taught and supervised activities in recreational programs, and has coordinated and conducted several sports events, including fundraising events such as golf tournaments and 5K/10K races. She also consults on topics related to gender equity in athletics.