Harry Geisinger first became involved with soccer as a parent in the early 1970s, serving as volunteer team coach, assistant and in various league offices, initially with Decatur-DeKalb YMCA. From 1975 through 1980, he led the growth of the youth soccer program as an officer at the Ashford-Dunwoody YMCA. He also served on their Board of Directors for several years. During those years, his accomplishments included motivating and organizing coach training and development for parent volunteers, as well as promoting policies and initiatives that stressed mandatory involvement of every youth player in every game. This led to his becoming an officer and later, President of the fledgling Georgia Soccer Coaches Association in 1978.
From then through 1980, he served as President of the Georgia Youth Soccer Association. Working with key founders, he supported and presided over the successful implementation of the Classic League. He realized a cherished goal when he began the practice of annually inviting college coaches to visit the U-19 Tournament in Georgia to observe and consider college-bound players for scholarships.
From 1981 to 1984, Harry served as Chairman of Georgia Soccer, continuing his stress on mandatory player participation in youth programs. During his tenure, he pursued two key goals: that the three divisions of the State Association were equal and needed partners in the growth of soccer in Georgia and that all three were given an active part in statewide soccer development, and that Georgia took an active leadership role in those activities. It was during this period that, as part of his intense desire to see the parent-coach development process strengthened, Geisinger organized a special International Coaching Course in Georgia that was led by the Technical Coaching Director of FIFA.
During his career, Geisinger served as Director of Region 3-B of the USYSA and participated in a number of National Committees and task forces. In 1987, he became a Georgia Soccer Life Member. In the years since, he continued to keep actively involved and participate at local, state, regional and national levels as a volunteer, advisor, worker, motivator and supporter. Finally, in 2006 he was inducted into the Georgia Soccer Hall of Fame.