Part four of the dynasty rankings continue as we slip into positive Z-Scores.
This is really the transitional period of the rankings. Most of the teams we saw in the first three parts were bad at something, but it's not too hard to see how there situations could have been improved. You had teams that failed to fix one particular personnel gap, such as the 2000s Bills and their eternal quest for a quarterback. You had teams that made one or two boneheaded personnel decisions, such as the 2010s 49ers when they fired Jim Harbaugh. You had failed high-leverage draft picks such as the 1990s Chargers and Ryan Leaf.