
19. Dave Campo:
Campo was another successful defensive coordinator who failed when it was time to rise up to the head-coaching ranks. He helped lead the talented Cowboys defense to three Super Bowls in the 1990s, earning him a shot at the top job in 2000. But he was unable to come even close to recreating the success of that dynasty as head coach. Campo posted three consecutive 5-11 seasons, hardly meeting the expectations of “America’s Team.”

Campo was fired after the 2002 season, leaving the Cowboys as the only head coach with a losing record. He later resurfaced with Cleveland and Jacksonville and was even hired back by the cowboys as defensive backs coach. Campo recently returned to college football as a consultant for the USC Trojans. A solid coach, but not one who succeeded in a head role in the NFL.