Detroit Lions running back Ty Johnson has been ruled out of Week 10's game against the Chicago Bears with a concussion.
Johnson left the game in the first half to be evaluated before eventually being ruled out during the third quarter. J.D. McKissic and Paul Perkins have shared the Lions' backfield with Johnson sidelined.
Johnson finished the game with 5 carries for 6 yards and 1 catch for 3 yards.
Source: Brad Biggs