The question is not how good David Johnson is, the question is how good will he end up being.
In his first game of the preseason, David Johnson carried the ball three times for 31 yards, and had two key blocks in pass protection to help set up the Arizona Cardinals first team offenses march to a field goal.
His best play however was a 22 yards run that takes the Cardinals inside the ten yard line.
He leaves poor David Amerson reaching for air.
Needless to say, David Johnson is in midseason form.