Sabol was born in Atlantic City, New Jersey and raised in Blairstown, New Jersey. While attending Blair Academy, he excelled in several sports, and set a World Interscholastic Swimming record in the 100-yard freestyle race. He continued his noted swimming career at the Ohio State University. He was selected for the 1936 Olympic team but refused to participate because of the games' connections to Nazi Germany. He had some success in the theater as an actor, appearing on Broadway for the production of Where Do We Go from Here. He served in World War II, and upon returning to civilian life, worked as a clothing salesman out of his father-in-law's factory.