Prewitt served in the Army Air Corps before enrolling at SMU in 1947. He served as team captain for the 1948-49 season, and was an All-Conference pick. Prewitt joined the coaching staff as an assistant in 1949 and helped the team to its first Final Four in 1956. In 1967, he became head coach, and led the team to a Southwest Conference regular-season title in 1972. He died on May 3, 2018, in Dallas, Texas at age 93.[2]