On October 21, 1984, during a game against the Minnesota Vikings, Billy Sims suffered a career ending knee injury. He spent two years trying to rehab his injury before retiring in 1986. Sims' injury would set the tone for the rest of the season as the Lions finished with a 4–11–1 record. Monte Clark was fired after the season. The Lions brought in Darryl Rogers, considered to be an offensive guru who previously coached at the college level. However, his tenure was marked with much disappointment. From 1985 to mid-season in 1988, he had acquired the record of 18–40 and was 2–9 in 1988 before he was fired. He was replaced by interim head coach Wayne Fontes, who by the end of his coaching career, was considered to be one of the best coaches in franchise history and had the distinction of having the most wins and losses of any head coach in franchise history.