After starting nine games and rushing for 336 yards in 1978, Miller was relegated to a back-up role for the remainder of his career. In 1980, the Browns won the AFC Central Division with an 11-5 record behind the efforts of All-Pros Mike Pruitt, Ozzie Newsome and Brian Sipe, who was also named league MVP. Miller contributed in a reserve role, rushing for 139 yards on 28 carries (5.0 avg.) and one touchdown. Nicknamed the Kardiac Kids the Browns lost in the divisional round of the playoffs to the eventual Super Bowl champion Oakland Raiders 14-12. Miller appeared in the game, carrying the ball only one time for one yard.