He was selected by the New Orleans Saints in the 1967 NFL expansion draft.[2] He was a part of franchise's inaugural season and played in eleven games. On August 15, 1968, he was traded to the Dallas Cowboys in exchange for a fourth round draft choice (#102-Bob Hudspeth).[3]
Simmons was an ordained Baptist minister. He helped to establish King's Arrow Ranch for children in Lumberton, Mississippi. He started his personal ministry in Little Rock, Arkansas.[6] He wrote the books "Dad the Family Coach" with the foreword provided by Tom Landry, "Dad the Family Mentor" with the foreword provided by Howard Hendricks and "Dad the Family Counselor". On November 7, 1994, he died in a one-car accident in Tennessee, while traveling to Atlanta.