Johnson had one carry for 13 yards and returned one kick for 23 yards in Sunday's 43-13 loss to the Titans in Week 1.
Johnson became the No. 2 back and No. 1 kick returner after Dontrell Hilliard left with a concussion in the third quarter. Hilliard entered the NFL concussion protocol and may not be ready for next Monday's road game against the Jets. Johnson is next in line to back up starter Nick Chubb.