2. Rod Marinelli
Somehow Marinelli managed to last three seasons in Detroit. But they were easily the worst three years in the history of the franchise. We’re not sure what they were thinking in letting his inept reign limp on for so long. Somehow he managed only 10 wins in all of that time. In short, the Lions were a mess as he overstayed his welcome.
His second season gave false hope when they were 6-2 at the midpoint. However, it all came crumbling down as they finished 7-9 overall. Then, he achieved the impossible by going 0-16 in 2008. In the era of free agency and salary caps, this is just unforgivable. Only the length of his tenure prevents him from topping this list.