Don Shula
From 1970-77, Shula was the general manager of the Miami Dolphins, and that was the most successful era of the Shula tenure. In 1971, Miami reached its first Super Bowl, and they followed up the loss with two straight Super Bowl wins, joining the Green Bay Packers as the only NFL team to date to repeat as Super Bowl champions. 1972 also saw the Dolphins go a perfect 17-0. When the Dolphins brought in Mike Robbie and later Eddie Jones to be general manager, Miami never had the same level of success.