John played for three seasons for the Chargers and then played for the San Francisco 49ers from 1981 to 1983. He was a member of the 1981 Super Bowl championship team playing in Super Bowl XVI.

 

While at Normandy, John was a 3 year starter playing both offensive tackle and defensive tackle. In 1973, he was selected first team All Lake Eric League and was a member of Normandy's first winning football team in 1973.

 

John earned a full scholarship to the University of Virginia. At Virginia, John started on both the offensive line and the defensive line. He was an All-Academic ACC team member in 1978.