Rarely have the Arizona Cardinals had any sort of running back depth. They had a good season out of both Tim Hightower and Beanie Wells. Edgerrin James and Tim Hightower were pretty solid. But that is about it. Most of the team's history, at least in Arizona has been that of complete lack of talent.
That is different this year. They have Andre Ellington, Chris Johnson and the rookie David Johnson.
Ellington was very effective in Week 1, but suffered a knee injury. Chris Johnson stepped in with 72 yards on 20 carries in Week 2 and 110 yards and two touchdowns in Week 3.