A native of Philadelphia, Pennsylvania, Johnson received his undergraduate degree from Springfield College in 1940, and played for the Philadelphia Stars that summer, posting a 3–4 record over 41.1 innings. After serving in the USO during World War II,[citation needed] Johnson became a coach at Howard in 1946, and received a graduate degree from New York University in 1947. He received his Ph.D. from the University of Maryland in 1967, and served as a professor of physiology at Howard from 1962 to 1978.[3]